LG Checkpointcodes U02.3.M

Transcription

LG
LG Checkpoint-codes
Versie 2.4P-M
vervangt U02.3.M
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THE SERVICEMANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
1
Hoofdstukindeling
Single A (vloer- & plafond UV / cassette UT / kanaal UB)........................................04
- Aan / Uit - Inverter
UU..(W)
- Variabel (aan/uit)..........................................................................................................26
AT-C.. / AT-H.. / LB-C.. / LB-D.. / LB-G.. / LB-H.. / LT-B.. / LT-C.. / LT-D.. / LT-E.. /
LV-B.. / P..AH
Multi-split ......................................................................................................................39
- Inverter
FM..AH
- Variabel (aan/uit)..........................................................................................................92
M..AC/AH
2
- Multi-split tot 2005.......................................................................................................94
A2-C.. / A3-C.. / A2-H.. / A3-H.. / LM..
RAC...............................................................................................................................96
- Standaard wandunit (aan/uit)......................................................................................97
LS-J.. / LS-K.. / LS-L.. / S..ACL / S..ACP / S..AH(P) / G..AH
- ART COOL Deluxe / Panel (aan/uit)............................................................................97
LS-P.. / A09AH* / -12- / -18- / C07AH* / -09- / -12- Standaard wandunit Inverter........................................................................................99
LS-N.. / LS-Q.. / LS-R.. / S..AN / S..AW
- ART COOL Deluxe Inverter.........................................................................................101
C09AW* / C12AW*
- ART COOL Deluxe Inverter.........................................................................................103
C18AW* / C24AW*
-ART COOL Panel Inverter............................................................................................105
A09AW* / A12AW* / A09AW1 / A12AW1
3
LG
Single A (vloer- & plafond UV / cassette UT /
UB kanaal) UU..(W)
Inverter 1-fase (single-split)
Inverter 3-fase (Single-split)
Synchro (master/slave)
Variabel (aan/uit, single-split)
4
Single A: Inverter & Synchro
(UU..W & UU72 / 100)
5. Trouble Shooting
6.6 Check code Trouble shooting CH01, CH02, CH06
Display
code
Title
Cause of error
Check point & Normal condition
01
Indoor air sensor
• Connector connection error
• Faulty PCB
• Faulty sensor (Open / Short)
Normal resistor : 10KΩ/ at 25˚C (Unplugged)
Normal voltage : 2.5Vdc / at 25˚C(Plugged)
Refer to sensor resistance table.
02
Indoor inlet pipe sensor
• Connector connection error
• Faulty PCB
• Faulty sensor (Open / Short)
Normal resistor : 5KΩ/ at 25˚C(Unplugged)
Refer to sensor resistance table.
06
Indoor outlet pipe sensor
• Connector connection error Normal resistor : 5KΩ/ at 25˚C(Unplugged)
• Faulty PCB
• Faulty sensor (Open / Short) Refer to sensor resistance table.
Check Flow Chart
Unplug the sensor
on Indoor unit PCB
Estimate the Voltage
of each sensor.
Check the
Connector connection
Is the voltage of
the sensor 2.5Vdc
at 25˚C
No
Correct connection
Yes
Is it normal ?
No
Correct connection
Repair or Change the PCB.
Unplugged
Yes
Plugged
Estimate the resistance
of each sensor.
Is the resistance of
the sensor 10Ω /
5kΩ at 25˚C?
Yes
No
Correct connection
10kΩ
2.5Vdc
Ω
V
Plug the sensor
on Indoor unit PCB
Check the resistance
Check the voltage
LGE Internal Use Only
5
(UU..W & UU72 / 100)
5. Trouble Shooting
6.7 Check code Trouble shooting CH03
Display
code
03
Title
Cause of error
Communication Error
(Wired remote controller)
• Connector connection
error
• Faulty PCB / Remote
controller
• Connection wire break
• Connection of wire
• Main PCB Volt. DC12V
• Noise interference
Check Flow Chart
CN-REMO
Check the wire
connection(Open /
Short / Miswirring)
Is it normal ?
Yes
Is the soldering state
of connector is normal?
Yes
No
Correct connection
Or change connection wire
No
Re-soldering component
Or change the PCB
Check the volt. of main
PCB power source.
(DC 12V,DC 5V)
Is it normal ?
Yes
Wired R/C
Indoor Unit
S 12V GND
(YL) (RD) (BR)
12V S GND
(RD) (YL) (BR)
No
Correct connection
Or change the PCB
12Vdc
12Vdc
V
V
Check the installation of
wired remote controller.
(Noise interference)
Is it normal ?
No
Adjust the state
of installation
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Check the Volt.
- 68 -
Check the Volt.
6
(UU..W & UU72 / 100)
5. Trouble Shooting
Display
code
Title
04
Drain pump
/ Float switch
Cause of error
• Float switch open.
(Normal : short)
• Water over flow
• The connection of wire (Drain pump/ Float switch)
• Drain pump power input. (220V)
• Drain tube installation.
• Indoor unit installation. (Inclination)
Check Flow Chart
Check the level of
water (Float moves top
position)
Is it normal ?
CN-Float
No
Check Drain Pump
CN-Float
Yes
Is the float
switch clean ?
No
Clean float switch
❊ Drain pump check
Yes
Check the wire
connection (Open,
Soldered poorly)
Check the wire
connection (Open,
Soldered poorly)
Is it normal ?
Is it normal ?
Yes
Is the resistance of f
loat switch normal
(short) ?
No
Correct connection
Or re-soldering PCB
Yes
No
Change the float switch
Drain Pump? Normal
( about 400Ω ) ?
No
Correct connection
Or re-soldering PCB
No
Change the Drain Pump
Yes
Is the drain
pump clean ?
No
Clean drain pump
Yes
Check drain tube
installation
- 69 -
7
5. Trouble Shooting
(UU..W & UU72 / 100)
6.9 Check code Trouble shooting CH09, CH10
Display
code
Title
09
EEPROM
Check sum (Indoor)
10
BLDC motor
fan lock (Indoor)
Cause of error
• Check sum error
• Check the poor soldering.
• Change PCB
• Fan motor break down
• Fan motor & PCB poor
contact
• Obstruction to the fan
• Check the indoor fan motor.
• Check the connection status between
• PCB and fan motor.
Check Flow Chart
Check the indoor fan
motor. (Fan is locked by
obstruction)
Is it normal ?
No
Remove obstruction
Yes
Check the connection
status between PCB and
fan motor
Is it normal ?
No
Correct connection Or re-soldering PCB
Yes
Check the DC Motor
signal
Is it normal ?
No
Change Indoor Motor
- 70 -
8
(UU..W & UU72 / 100)
5. Trouble Shooting
Display
code
05
/
53
Title
Communication
(Indoor↔Outdoor)
Cause of error
• The connector for transmission is disconnected.
• The connecting wires
are misconnected.
• The communication line
is break
• Outdoor PCB is
abnormal.
• Indoor PCB is abnormal.
• Check power input AC 230V. (Outdoor, Indoor)
• Check connector for transmission
• Check wires are misconnecting.
• Check transmission circuit of outdoor PCB
• Check transmission circuit of indoor PCB
Check Flow Chart
Check the input power
AC230V (Outdoor,
Indoor unit)
Is it normal ?
( 230V ±10% )
Is the connection of
GND,GND1,GND2,
correctly connected?
No
Correct connection
Yes
No
Needs electric work
Change PCB
Yes
Check the communication
wires are correctly
connected.
Is it normal ?
Yes
between communication
line and GND.
(Normal : Over 2MΩ)
Is it normal ?
No
Adjust the connection
of wire Confirm the
wire of "Live",
"Neutral", "Signal"
❊ CH05 is displayed at indoor unit,
CH53 is displayed at outdoor unit.
No
Correct connection
Yes
Is connector for
communication
correctly connected?
- 71 -
9
5. Trouble Shooting
(UU..W & UU72 / 100)
Display
code
21
Title
DC Peak
Cause of error
• Instant over current
• Over Rated current
• Poor insulation of IPM
• An instant over current in the U,V,W phase
- Comp lock
- The abnormal connection of U,V,W
• Over load condition
- Overcharging of refrigerant
- Pipe length.
• Poor insulation of compressor
Check Flow Chart
Check the wire
connection.(U,V,W)
Is it normal ?
Yes
Is it normal ?
(1 Ph : 230V ±10%
3 Ph : 400V ±10% )
Yes
No
Correct
connection
Check DC link
capacitor Is it normal?
(Refer to belows)
Check the resistance of
comp. (No difference at
each terminal)
Is it normal ?
Yes
Yes
Check Over load condition
- Overcharging of
refrigerant
- Pipe Length
- Condenser is blocked
- Outdoor fan is locked
No
Change
Compressor
Check the electricity
leakageof the compressor.
(Refer to comp check table)
Is it normal ?
Yes
No
Needs electric work
No
Change DC link
capacitor
Or Main PCB
Remove obstruction
Change outdoor fan
or motor
Change refrigerant
No
Change Main PCB
No
Change
Compressor
❊ Dc link voltage table
Model
1 Phase
(Outdoor, Indoor unit)
3 Phase
DC Link Voltage
Type
Operating
DC280V ± 10%
DC280V ± 10%
DC380V ± 10%
DC380V ± 10%
DC380V ± 10%
DC380V ± 10%
DC380V ± 10%
PFC
DC300V ± 10%
DC380V ± 10%
PSC
PFC
PFC
DC540V ± 10%
DC540V ± 10%
DC540V ± 10%
DC500V ± 10%
DC680V ± 10%
DC680V ± 10%
PFC
DC540V ± 10%
DC680V ± 10%
PSC
PSC
PFC
PFC
PFC
PFC
PFC
AUUW606D
AUUW368D
AUUW428D
AUUW488D
AUUW608D
- 72 -
Non operating
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
AUUW126C
AUUW186C
AUUW246D
AUUW306D
AUUW366D
AUUW426D
AUUW486D
10
(UU..W & UU72 / 100)
5. Trouble Shooting
Display
code
Title
22
Max. C/T
Cause of error
• Malfunction of compressor
• Blocking of pipe
• Low voltage input
• Refrigerant, pipe length, blocked, …
• Over current
Check Flow Chart
Check the wire
connection.(U,V,W)
Is it normal ?
Yes
Is it normal ?
(1 Ph : 230V ±10%
3 Ph : 400V ±10% )
Yes
No
Correct
connection
Check DC link
(Refer to belows)
each terminal)
Is it normal ?
Yes
Yes
- Overcharging of
refrigerant
- Pipe Length
No
Change
Compressor
Is it normal ?
Yes
No
Needs electric work
No
Change DC link
capacitor
Or Main PCB
Remove obstruction
Change outdoor fan
or motor
Change refrigerant
No
Change Main PCB
No
Change
Compressor
Model
1 Phase
3 Phase
DC Link Voltage
Type
Operating
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC280V ± 10%
DC280V ± 10%
DC380V ± 10%
DC380V ± 10%
DC380V ± 10%
DC380V ± 10%
DC380V ± 10%
PFC
DC300V ± 10%
DC380V ± 10%
PSC
PFC
PFC
DC540V ± 10%
DC540V ± 10%
DC540V ± 10%
DC500V ± 10%
DC680V ± 10%
DC680V ± 10%
PFC
DC540V ± 10%
DC680V ± 10%
AUUW126C
AUUW186C
AUUW246D
AUUW306D
AUUW366D
AUUW426D
AUUW486D
PSC
PSC
PFC
PFC
PFC
PFC
PFC
AUUW606D
AUUW368D
AUUW428D
AUUW488D
AUUW608D
- 73 -
Non operating
11
(UU..W & UU72 / 100)
5. Trouble Shooting
Title
40
C/T
Internal circuit
Cause of error
• Initial current error
• Malfunction of current detection circuit.
(Open / Short)
• The voltage of “C01N” Is 4.0Vdc (25A) .
→
Display
code
Check Flow Chart
AC230V
TRANS
Is it normal ?
( 230V±10%)
No
Correct connection
Yes
→
Check “C01N”
Is it normal (4.0Vdc )?
C01N
No
Change Main PCB
Yes
Check Check TRANS
Is it normal?
No
Change TRANS
Yes
Change main PCB
V
- 74 -
12
(UU..W & UU72 / 100)
5. Trouble Shooting
Display
code
Title
23
DC Link
Low voltage.
• 1ph : DC link volt. is
140Vdc .
250Vdc .
• Check the power source.
• Check the components.
28
DC Link
High voltage
140Vdc .
250Vdc .
25
Input voltage
• Abnormal Input voltage
(140Vac , 300Vac )
Cause of error
→
→
→
→
→
❊ Check DC link voltage
Check Flow Chart
Check the wire
connection.(U,V,W)
Is it normal ?
Yes
Is it normal ?
Yes
V
No
Correct
connection
❊ Check TRANS1
No
Change
Compressor
CN_TRANS 1
Is it normal ?
Yes
No
Change
Compressor
Model
1 Phase
3 Phase
DC Link Voltage
Type
Operating
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC280V ± 10%
DC280V ± 10%
DC380V ± 10%
DC380V ± 10%
DC380V ± 10%
DC380V ± 10%
DC380V ± 10%
PFC
DC300V ± 10%
DC380V ± 10%
PSC
PFC
PFC
DC540V ± 10%
DC540V ± 10%
DC540V ± 10%
DC500V ± 10%
DC680V ± 10%
DC680V ± 10%
PFC
DC540V ± 10%
DC680V ± 10%
AUUW126C
AUUW186C
AUUW246D
AUUW306D
AUUW366D
AUUW426D
AUUW486D
PSC
PSC
PFC
PFC
PFC
PFC
PFC
AUUW606D
AUUW368D
AUUW428D
AUUW488D
AUUW608D
- 75 -
Non operating
13
5. Trouble Shooting
(UU..W & UU72 / 100)
Display
code
Title
24
Press S/W Open
Cause of error
• Check the connection of “CN_PRESS”
• Check the SVC V/V open.
• Check the leakage of refrigerant.
• Low / High press
S/W open.
Check Flow Chart
Is the wire connection
normal ?
❊ Pressure switch table
No
Correct connection
Switch
Spec
Model
Yes
Is the soldering
state of connector is
normal?
No
Re-soldering component
Yes
Is the SVC Valve
opened ?
Low pressure switch
0.03 Mpa
AUUW126C
AUUW186C
High pressure switch
4.3 Mpa
AUUW246D
AUUW306D
AUUW366D
AUUW426D
AUUW486D
AUUW606D
AUUW368D
AUUW428D
AUUW488D
AUUW608D
No
Open SVC Valve
Yes
CN_PRESS
Check the leakage of
refrigerant.
Check Pressure of
suction pipe
Check Pressure of
discharge pipe
Is it normal ?
Yes
No
Re-vaccuming system
& Re-charging
Change main PCB
- 76 -
14
(UU..W & UU72 / 100)
5. Trouble Shooting
Display
code
Title
26
DC Compressor
Position
• Compressor
position detect error
• Check the connection of comp wire “U,V,W”
• Check the component of “IPM”, detection parts.
27
PSC Fault
PFC Fault
• Over current at
“IGBT”/PFC module
• Check the component of “IGBT” /PFC module.
Cause of error
Check Flow Chart
Check the wire
connection.(U,V,W)
Is it normal ?
Yes
Is it normal ?
(1 Ph : 230V ±10%
3 Ph : 400V ±10% )
Yes
No
Correct
connection
Check DC link
(Refer to belows)
each terminal)
Is it normal ?
Yes
Yes
- Overcharging of
refrigerant
- Pipe Length
No
Change
Compressor
Is it normal ?
Yes
No
Needs electric work
No
Change DC link
capacitor
Or Main PCB
Remove obstruction
Change outdoor fan
or motor
Change refrigerant
No
Change Main PCB
No
Change
Compressor
Model
1 Phase
3 Phase
DC Link Voltage
Type
Operating
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC300V ± 10%
DC280V ± 10%
DC280V ± 10%
DC380V ± 10%
DC380V ± 10%
DC380V ± 10%
DC380V ± 10%
DC380V ± 10%
PFC
DC300V ± 10%
DC380V ± 10%
PSC
PFC
PFC
DC540V ± 10%
DC540V ± 10%
DC540V ± 10%
DC500V ± 10%
DC680V ± 10%
DC680V ± 10%
PFC
DC540V ± 10%
DC680V ± 10%
AUUW126C
AUUW186C
AUUW246D
AUUW306D
AUUW366D
AUUW426D
AUUW486D
PSC
PSC
PFC
PFC
PFC
PFC
PFC
AUUW606D
AUUW368D
AUUW428D
AUUW488D
AUUW608D
- 77 -
Non operating
15
4. Trouble Shooting
Display
code
29
(UU..W & UU72 / 100)
Title
Inverter compressor over
current
Cause of error
1. Overload operation
(Pipe clogging/Covering/EEV defect/Ref. overcharge)
Inverter compressor input
2. Compressor damage(Insulation damage/Motor
current is over 30A
damage)
3. Input voltage low
4. ODU inverter PCB assembly damage
■ Error Diagnosis and Countermeasure Flow Chart
Is installation
condition normal?
No
Yes
Are the resistance
Between each phase and
insulation resistance of Inverter
compressor normal?
No
1. Check Pipe clogging/distortion
2. Check Covering (Indoor/Outdoor Unit)
3. Check EEV connector assemble condition/normal
operation
4. Check refrigerant pressure
→ Reassemble or manage if abnormality found
1. Check resistance between each terminal of compressor
(0.188 ±7%)
2. Check insulation resistance between compressor
terminal and pipe (over 50MΩ )
→ Replace compressor if abnormality found
Yes
Is compressor
Wire connection
condition normal?
No
1. Check inverter PCB assembly U,V,W connector
connection condition
2. Check wire disconnection and wiring
3. Check compressor terminal connection condition
(bad contact)
→ Reassemble if abnormality found
Yes
Is input voltage normal?
No
Check
L~N phase is 220V ±15%
→ Check connection condition and wiring if power is
abnormal
No
Check inverter PCB assembly IPM normality
→ Replace inverter PCB assembly
Yes
Is inverter PCB assembly
normal?
Yes
Recheck power and installation condition
- 90 -
16
(UU..W & UU72 / 100)
5. Trouble Shooting
Title
32
D-pipe (Inverter)
temp. high
(105˚C )
33
D-pipe (Constant)
temp. high
(105˚C )
→
→
Display
code
Cause of error
• Discharge sensor
(Inverter) temp. high
• Check the discharge pipe sensor for INV.
• Check the install condition for over load.
• Refer to sensor resistance table.
(Cons.) temp. high
• Check the discharge pipe sensor for Cons.
• Refer to sensor resistance table.
Check Flow Chart
- Refrigerant leakage
Yes
Is the resistance of the
sensor is 200kΩ
at 25˚C?
No
Remove obstruction
Change outdoor fan
or motor
Change refrigerant
Yes
Plug the sensor
on Indoor unit PCB
Unplug the sensor
on Outdoor unit PCB
of each sensor.
Check the
Is it normal ?
No
Change the sensor
Yes
Is the voltage of the
sensor is
4.5Vdc at 25˚C
No
Correct connection
Yes
Yes
of each sensor.
No
Change the sensor
- 78 -
17
(UU..W & UU72 / 100)
Display
code
Title
39
Transmission Error
Between (PFC Micom →
INV Micom)
Cause of error
4. Trouble Shooting
1. Micom defect/Circuit defect
2. Different Micom S/W Version
Communication Error
Between PFC Micom
and INV Micom.
Is PFC Micom & INV Micom
S/W Program normal?
No
Upgrade Micom Program
Yes
Is Inverter PCB assembly normal?
No
Replace inverter PCB assembly
Yes
- 115 -
18
(UU..W & UU72 / 100)
5. Trouble Shooting
6.18 Check code Trouble shooting CH41, CH44, CH45, CH46, CH47, CH65
Display
code
Title
41
47
D-pipe sensor(Inv)
D-pipe sensor(Cons)
• Connector connection error • Normal resistor : 200KΩ/ at 25˚C (Unplugged)
• Normal voltage : 4.5Vdc / at 25˚C (plugged)
• Faulty PCB
• Faulty sensor (Open / Short) • Refer to sensor resistance table.
44
Air sensor
• Faulty PCB
45
46
Condenser Pipe sensor
Suction Pipe sensor
• Faulty PCB
65
Heat sink
sensor
• Faulty PCB
Cause of error
Check Flow Chart
Unplug the sensor
on Indoor unit PCB
of each sensor.
Check the
sensor is 4.5Vdc /
2.5Vdc at 25˚C
No
Change the sensor
Yes
Is it normal ?
No
Correct connection
Yes
Unplugged
Plugged
of each sensor.
Is the resistance of the
Sensor is 200kΩ/10kΩ⁄
/5kΩ at 25˚C?
No
Change the sensor
Yes
10kΩ
2.5Vdc
Ω
V
Plug the sensor
on Indoor unit PCB
- 79 -
Check the voltage
19
(UU..W & UU72 / 100)
5. Trouble Shooting
Display
code
Title
51
Over capacity
60
EEPROM
Check sum
Cause of error
• Over capacity
Combination
• Check the indoor unit capacity.
• Check the combination table.
• Check sum error
• Check the connection port.
Check Flow Chart (CH51)
Check the
indoor unit combination
Check the outdoor
unit max combination
Is it normal ?
No
Correct connection
Yes
Check PCB
Check Flow Chart (CH60)
Check the the
connection port.
Is it normal ?
No
Correct connection
Yes
Change EEPROM
- 80 -
20
(UU..W & UU72 / 100)
Display
code
Title
Cause of error
52
Transmission error
between (Inverter PCB ➔
Main PCB)
Main controller of Master
unit of Master unit can’t
receive signal from
inverter controller
4. Trouble Shooting
1. Power cable or transmission cable is not
connected
2. Defect of outdoor Main fuse/Noise Filter
3. Defect of outdoor Main / inverter PCB
■ Error diagnosis and countermeasure flow chart
Is transmission
LED (Yellow) of inverter
compressor
PCB on?
No
Is noise filter or fuse
normal?
No
Replace noise filter or fuse
Yes
Yes
Replace inverter compressor PCB
Is transmission cable
connected correctly?
No
Re-connect transmission cable
Yes
No
Is MAIN PCB normal?
Replace MAIN PCB
Yes
Check Point
- Check the Transmission connector and LED (Main & Inverter)
48/56k
<Inverter PCB>
<MAIN PCB>
- 93 -
21
(UU..W & UU72 / 100)
Troubleshooting Guide
14) Troubleshooting CH54
Display
code
Title
54
3-phase wrong wiring
of main outdoor unit
Cause of error
• 3-phase wrong wiring of
outdoor unit (Reverse
Phase /omission of
phase)
• Abnormal Main PCB
• No connection of CN_Phase
• Changed R, S, T connection order
Check Point
1. Check the connection condition of R,S,T wire.
2. Check the connection condition of CN_Phase.
3. Check the outdoor main fuse.
22
(UU..W & UU72 / 100)
5. Trouble Shooting
Display
code
Title
61
Condenser
pipe sensor
temp. high
• condenser pipe
sensordetected high
temp.(65˚C)
• Check the load condition.
• Check the sensor of Condenser pipe sensor.
• Normal resistor : 5KΩ/ at 25˚C (Unplugged)
• Normal voltage : 2.5Vdc / at 25˚C (Plugged)
62
Heat sink sensor
temp. high
• heat sink sensor
detected high temp.
(85˚C)
• Check the sensor of heat sink.
• Normal resistor : 10KΩ/ at 25˚C (Unplugged)
• Normal voltage : 2.5Vdc / at 25˚C (Plugged)
Cause of error
Check Flow Chart
- Refrigerant leakage
Yes
the Sensor is 5kΩ
/10kΩ at 25˚C?
No
Remove obstruction
Change outdoor fan
or motor
Change refrigerant
Yes
Plug the sensor
on Indoor unit PCB
Unplug the sensor
on Outdoor unit PCB
of each sensor.
Check the
Is it normal ?
No
Change the sensor
Yes
sensor is 4.5Vdc /
2.5Vdc at 25˚C
No
Correct connection
Yes
Yes
of each sensor.
No
Change the sensor
- 81 -
23
(UU..W & UU72 / 100)
4. Trouble Shooting
Display
code
73
Title
AC input instant over current error
(Matter of software)
Cause of error
Inverter PCB input power
current is over 48A(peak)
for 2ms
1. Overload operation (Pipe clogging/Covering/EEV
defect/Ref.overcharge)
2. Compressor damage
(Insulation damage/Motor damage)
3. Input voltage abnormal (L, N)
4. Power line assemble condition abnormal
5. Inverter PCB assembly damage
(input current sensing part)
Is installation
condition normal?
No
Yes
1.Check Pipe clogging/distortion
2.Check Covering (Indoor/Outdoor Unit)
3.Check EEV connector assemble condition/normal operation
4.Check refrigerant pressure
No
Check
L~N phase voltage is 220V ± 10%
→ Check connection condition and wiring if power is abnormal
No
1.Check L,N connection condition
2.Check wire disconnection and wiring
No
1.Check inverter PCB assembly U,V,W connector connection condition
3.Check compressor terminal connection condition(bad contact)
Yes
Is AC input Wire connection
condition normal?
Yes
Is compressor
Wire connection
condition normal?
Yes
normal?
No
Yes
Recheck power and
installation condition
- 102 -
24
(UU..W & UU72 / 100)
16) Troubleshooting CH67, CH105
Display
code
Title
Cause of error
67
Outdoor fan
lock
• Outdoor fan is not operating
• Check the fan condition.
• Check the fan connector
105
Communication error
between main PCB and
fan PCB
• Communication error
between main PCB
and fan PCB
• Short or fusing of communication line
• Poor outdoor unit PCB
• Power input when the DC link capacitor discharges
Check Point
• CH 67
• CH 105
1. Check the install condition for fan.
1. Is communication line between the main PCB and the
fan PCB normal?
2. Is the communication LED on?
25
Single A
Aan / uit, Single-split
AT-C.. / AT-H..
LB-C.. / LB-D.. / LB-E.. / LB-G.. / LB-H..
LT-B.. / LT-C.. / LT-D.. / LT-E..
LV-B..
P03AH / P05AH / P08AH
26
Single A: Aan/uit Single-split
(voor modellen, zie pag. 26)
1) Troubleshooting CH01, CH02, CH06
Display
code
Title
01
Indoor air sensor
• Open / Short
• Soldered poorly
• Internal circuit error
Normal resistor : 10K. / at 25°C (Unplugged)
Normal voltage : 2.5Vdc / at 25°C (plugged)
02
• Open / Short
• Soldered poorly
• Open / Short
• Soldered poorly
06
Cause of error
10k.
2.5Vdc
.
V
Check the voltage
Check Point
1. Unplug the sensor on Indoor unit PCB.
2. Estimate the resistance of each sensor.
3. If the resistance of the sensor is 10K. / 5K. at 25°C, then sensor is normal.
4. If the resistance of the sensor is 0 K. or 8 , then sensor is abnormal. → Change the sensor.
5. Plug the sensor on Indoor unit PCB and Power ON.
6. Estimate the voltage of each sensor.
7. If the voltage of the sensor is 2.5Vdc at 25°C, then sensor is normal.
8. If the resistance of the sensor is 0 or 5Vdc, then sensor is abnormal. → Repair or Change the PCB.
27
Display
code
Title
03
Communication
Wired R/C
Cause of error
Wired R/C
12V
S
• Open / Short
• Wrong connection
Indoor Unit
GND
12V
S
CN-REMO
GND
12Vdc
12Vdc
V
V
Check the Volt.
Check the Volt.
Check Point
1. Check the wire connection. (Open / Short) → Repair the connection
2. Check the soldering state of connector. (Soldered poorly) → Repair or Change the PCB.
3. Check the volt. Of main PCB power source. (DC 12V, DC 5V) → Repair or Change the main PCB.
4. Check the installation of wired remote controller. (Noise interference) → Adjust the state of installation
28
Display
code
Title
04
Drain pump
/ Float switch
Cause of error
• Float switch Open.
(Normal : short)
• The connection of wire(Drain pump/ Float switch)
CN Float
CN-D/PUMP
CN-Float
0.
.
Check Point
1. Check the wire connection. (Open, Soldered poorly) → Repair the connection or change the PCB.
2. Check the resistance of float switch (Abnormal : Open, Normal : short) → Check the float switch.
3. Check the level of water
4. Check the volt. Of Drain pump power supply. (AC 230V) → Repair or Change the main PCB.
29
Display
code
05
/
53
Title
Communication
(Indoor → Outdoor)
Cause of error
• Communication poorly
• Power input AC 220V. (Outdoor, Indoor)
• The connecting wires are misconnected.
• The GND1,2 is not connected at main GND.
• The communication line is shorted at GND.
• Transmission circuit of outdoor PCB is abnormal.
• Transmission circuit of indoor PCB is abnormal.
Check Point
1. Check the input power AC230V. (Outdoor, Indoor unit)
2. Check the communication wires are correctly connected.
→ Adjust the connection of wire
→ Confirm the wire of “Live”, “Neutral”
3. Check the resistance between communication line and
GND. (Normal : Over 2M. )
4. Check the connector for communication is correctly
connected.
5. Check the connection of GND1, GND2, and main GND.
6. If one indoor unit is operated normally, outdoor PCB is no
problem.
→ Check the another indoor unit.
* CH05 is displayed at indoor unit, CH53 is displayed at outdoor unit.
30
Display
code
Title
21
Cause of error
DC Peak
Comp
U
Terminal
U-V
V-W
W-U
W
Comp
- Comp lock
- Pipe length.
Resistance(. ) at 20°C
.
V
Copper
pipe
Inverter Constant
comp.
comp.
0.64
0.64
0.64
0.8
0.8
0.8
Resistance(. ) at 20°C
.
Terminal
U-GND
V-GND
W-GND
Inverter Constant
comp.
comp.
2M.
2M.
2M.
2M.
2M.
2M.
Check Point
1. Check the wire connection. (U,V,W)
2. Check the load condition. (Refrigerant, Pipe length, …) → Adjust the load condition
3. Check the electricity leakage of the compressor. → Normal : Over 2M. .
4. Check the resistance of compressor. → Normal : 0.65. (INV), 0.8. (Cons.) → No difference at each terminal.
5. Check the insulation from water at IPM part. → Check the trace of water.
6. Check the IPM circuit.
31
Display
code
Title
Cause of error
21
Max. C/T
22
C/T
Internal circuit
Over current (14A )
Malfunction of compressor
Blocking of pipe
Low voltage input
Refrigerant, pipe length, blocked, …
Initial current error
Malfunction of current detection circuit.
(Open / Short)
The voltage of “C01N” Is 4.0Vdc(25A) .
V
-
Check Point
1. Check the power source.
+
-
2. Check the fan operation is right.
+
-
3. Check the current.
4. Check the install condition.
5. Check the internal circuit. (C/T, Diode, Resistor)
108 Universal System Air Conditioner
+
Display
code
Title
24
Press S/W Open
25
Input voltage
Cause of error
S/W open.
• Check the connection of “CN_Press”.
(140Vac , 300Vac .
TRANS1
50Hz, DC12V
CN PRESS
CN TRNAS1
Check Point
• CH 24
• CH 25
1. Check the connection of “CN_PRESS”
1. Check the power source.
2. Check the install condition for over load.
2. Check the components
(Trans1, B/Diode, Diode, Resistance)
3. Check the SVC V/V open.
4. Check the leakage of refrigerant.
110 Universal System Air Conditioner
Display
code
Title
32
D-pipe (Inverter)
temp. high
(105°C )
33
D-pipe (Constant)
temp. high
(105°C )
Cause of error
(Cons.) temp. high
D-Pipe temp.
Toff(105) °C
T2(95) °C
T1(90) °C
COMP Frequency
Normal
(Hz)
LEV Openness
(Pulse)
Normal
Normal
OFF
Normal
OFF Control
Check Point
• CH 32
• CH 33
4. Check the constant compressor. (same with CH21)
34
11) Troubleshooting CH41, CH44, CH45, CH46, CH47, CH65
Display
code
Title
41
D-pipe sensor (Inverter)
• Open / Short
• Soldered poorly
• Normal resistor : 200K. / at 25°C (Unplugged)
• Normal voltage : 4.5Vdc / at 25°C (plugged)
44
Air sensor
• Open / Short
• Soldered poorly
45
• Open / Short
• Soldered poorly
46
Suction Pipe sensor
• Open / Short
• Soldered poorly
D-pipe sensor (Constant)
• Open / Short
• Soldered poorly
Heat sink sensor
• Open / Short
• Soldered poorly
47
65
Cause of error
Check Point
1. Estimate the resistance of each sensor.(Unplugged)
2. Estimate the voltage of each sensor.(Plugged)
3. If the resistance of the sensor is 0 k. or 8 , then sensor is abnormal.
.
If the voltage of the sensor is 0 V or 5Vdc, then sensor is abnormal.
35
Display
code
Title
51
Over capacity
60
EEPROM
Check sum
Cause of error
• Over capacity
Combination
• Check sum error
• Check the PCB ASM P/No.
Model
Gross max. capacity
Max. single indoor unit capacity
AUUW126B
21k
12k
AUUW186B
AUUW246B
24k
12K
AUUW306B
AUUW366B
33k
18K
AUUW4860
39k
18K
AUUW6060
52k
24K
Check Point
• CH 51
• CH 60
1. Check the indoor unit capacity.
1. Check the insertion condition of EEPROM.
2. Check the poor soldering
36
Single A: Aan/Uit Single-split
Display
code
Title
Cause of error
61
Condenser
pipe sensor
temp. high
• Condenser pipe sensor
detected high
temp.(65°C)
62
Heat sink sensor
temp. high
• Heat sink sensor
detected high
temp.(85°C)
• Check the fan is locked.
• Check the sensor of heat sink.
Heat Sink temp.
Toff °C
T2 °C
T1 °C
COMP Frequency
Normal
(Hz)
Normal
Check Point
OFF
Normal
• CH 61
• CH 62
(Refrigerant, Pipe length, Blocked, …)
1. Check the fan is locked.
2. Check the Outdoor temp. is very high.
37
Troubleshooting CH54
Display
code
Title
54
Phase error
Cause of error
• Check the Main power
• Check the CN_PHASE connector
• Phase change
U
V
Phase_A
W
5.3 msec
Phase_B
Phase_C
1
0
1
1
0
0
1
1
0
0
1
0
0
1
1
0
0
1
Check Point
1. Check the Main power.
2. Check the connecting state of connector CN_3PHASE on the outdoor pcb ass'y.
38
LG
Multi-split
Inverter
FM..AH
39
Multi-split: Inverter
FM..AH
4. Trouble Shooting
6.6 Troubleshooting Indoor Error
Display
code
Title
01
Indoor air sensor
• Open / Short
• Soldered poorly
Normal resistor : 10KΩ/ at 25°C (Unplugged)
02
• Open / Short
• Soldered poorly
06
• Open / Short
• Soldered poorly
Cause of error
10kΩ
2.5Vdc
Ω
V
Check the voltage
Check Point
1. Unplug the sensor on Indoor unit PCB.
2. Estimate the resistance of each sensor.
3. If the resistance of the sensor is 10KΩ/ 5KΩ at 25°C, then sensor is normal.
4. If the resistance of the sensor is 0 KΩ or ∞, then sensor is abnormal. → Change the sensor.
5. Plug the sensor on Indoor unit PCB and Power ON.
6. Estimate the voltage of each sensor.
7. If the voltage of the sensor is 2.5Vdc at 25°C, then sensor is normal.
8. If the resistance of the sensor is 0 or 5Vdc, then sensor is abnormal. → Repair or Change the PCB.
- 59 -
40
FM..AH
4. Trouble Shooting
Display
code
Title
03
Communication
Wired R/C
Cause of error
Wired R/C
12V
S
• Open / Short
• Wrong connection
Indoor Unit
GND
12V
S
CN-REMO
GND
12Vdc
12Vdc
V
V
Check the Volt.
Check the Volt.
Check Point
1. Check the wire connection. (Open / Short) → Repair the connection
2. Check the soldering state of connector. (Soldered poorly) → Repair or Change the PCB.
3. Check the volt. Of main PCB power source. (DC 12V, DC 5V) → Repair or Change the main PCB.
4. Check the installation of wired remote controller. (Noise interference) → Adjust the state of installation
- 60 -
41
FM..AH
Display
code
Title
04
Drain pump
/ Float switch
Cause of error
• Float switch Open.
(Normal : short)
4. Trouble Shooting
• The connection of wire(Drain pump/ Float switch)
CN Float
CN-D/PUMP
CN-Float
0Ω
Ω
Check Point
1. Check the wire connection. (Open, Soldered poorly) → Repair the connection or change the PCB.
2. Check the resistance of float switch (Abnormal : Open, Normal : short) → Check the float switch.
3. Check the level of water
4. Check the volt. Of Drain pump power supply. (AC 230V) → Repair or Change the main PCB.
- 61 -
42
4. Trouble Shooting
FM..AH
6.7 Troubleshooting Outdoor Error
▶FM15AH t/m FM25AH
Display
code
05
/
53
Title
Communication
Cause of error
• The GND1,2 is not connected at main GND.
Check Point
→ Adjust the connection of wire
→ Confirm the wire of “Live”, “Neutral”
GND. (Normal : Over 2MΩ)
4. Check the connector for communication is correctly
connected.
5. Check the connection of GND1, GND2, and main GND.
problem.
→ Check the another indoor unit.
* CH05 is displayed at indoor unit, CH53 is displayed at outdoor unit.
- 62 -
43
FM..AH
4. Trouble Shooting
▶FM27AH t/m FM57AH
Display
code
Title
05
/
53
Title
Communication
Cause of error
Check Point
Adjust the connection of wire Confirm the wire of "Live",
"Neutral"
GND. (Normal : Over 2MΩ)
4. Check the connector for communication is correctly connected.
problem.
Check the another indoor unit.
* CH05 is displayed at indoor unit, CH53 is displayed at
outdoor unit.
6. If all indoor unit is displayed CH05 but outdoor PCB not
display
CH53 : Check the CN_COM and CN_POWER is correctly
connected.
L
N
< TERMINAL BLOCK >
• 27/30/40k
1. In Case of CH53, Check the Connection → L , N at the terminal block
• 48/56k
1. In Case of CH05, Check the Connection → CN-POWER,
CN-COMM at the Main PCB
2. In Case of CH53, Check the Connection → CN-COMM at
the Main PCB → L , N at the terminal block
L
N
N
L
N
CN-COMM
CN-Power
< MAIN PCB >
- 72 -
44
FM..AH
FM15AH t/m FM27AH
4. Trouble Shooting
Display
code
Title
Cause of error
DC PEAK
(IPM Fault)
21
- Comp lock
Pipe length.
Outdoor Fan is stop
operation
Reassemble or manage if abnormality found
No
Is installation
condition normal?
Yes
Are the resistance
compressor normal?
(1.083~1.123Ω ±5%)
terminal and pipe (over 50M )
Replace compressor if abnormality found
No
Yes
Is compressor
Wire connection
condition normal?
No
(bad contact)
Reassemble if abnormality found
No
Yes
Is inverter PCB assembly normal?
Yes
■ Comp checking method
Comp
U
Resistance(Ω) at 20°C
Ω
V
W
Comp
Copper
pipe
Terminal
Inverter
comp.
U-V
V-W
W-U
1.083
1.123
1.096
Ω
Terminal
Inverter
comp.
U-GND
V-GND
W-GND
50MΩ
50MΩ
50MΩ
45
FM..AH
FM15AH t/m FM25AH
4. Trouble Shooting
1. Wait until inverter PCB DC voltage is discharged after main power off.
2. Pull out CN-L1(R), CN-L2(S), CN-L3(T) and CN-COMP Connector.
3. Set multi tester to resistance mode.
4. If the value between P and N terminal of IPM is short(0Ω) or open(hundreds MΩ), PCB needs to be replaced.(IPM damaged)
5. Set the multi tester to diode mode.
6. In case measured value is different from the table, PCB needs to be replaced.(PCB damaged).
P
U
V
W
Nu Nv Nw
P
U
V
W
Nu Nv Nw
27
26
25
24
23 22 21
27
26
25
24
23 22 21
0.4 ~ 0.6 V
0.4 ~ 0.6 V
PFC_IPM check
U, V, W ➔ R S T
CAUTION
In case that the control box is opend and before checking electrical parts, it should be checked that the
LED 01M, 02M turned off(wait 7 minutes after main power OFF), otherwise it may cause electrical shock.
46
FM..AH
FM27AH t/m FM57AH
Display
code
Title
Cause of error
DC PEAK
(IPM Fault)
21
4. Trouble Shooting
- Comp lock
Pipe length.
Outdoor Fan is stop
operation
No
Is installation
condition normal?
Yes
Are the resistance
compressor normal?
(0.34~0.35
7%)
No
Yes
Is compressor
Wire connection
condition normal?
No
(bad contact)
No
Yes
Yes
■ Comp checking method
Comp
U
Ω
V
U-V
V-W
W-U
W
Comp
Terminal
Copper
pipe
Inverter Constant
comp.
comp.
0.64
0.64
0.64
0.8
0.8
0.8
Ω
Terminal
U-GND
V-GND
W-GND
Inverter Constant
comp.
comp.
2MΩ
2MΩ
2MΩ
2MΩ
2MΩ
2MΩ
- 73 -
47
FM..AH
4. Trouble Shooting
■FM27AH t/m FM41AH
LED01M
LED02M
U,V,W CONNECTOR
U
V
W
2. Pull out V, V, W COMP connector.
P
U
V
W
Nu Nv Nw
P
U
V
W
Nu Nv Nw
27
26
25
24
23 22 21
27
26
25
24
23 22 21
0.4 ~ 0.6 V
0.4 ~ 0.6 V
PFC_IPM chec
U, V, W ➔ R S
CAUTION
48
FM..AH
4. Trouble Shooting
■ FM49AH t/m FM57AH
U
V
W
LED01M
LED02M
CN(L)_BRWON
CN(N)_BLUE
U,V,W CONNECTOR
2. Pull out CN(L), CN(N) connectors and U,V,W COMP Connector.
P
U
V
W
Nu Nv Nw
P
U
V
W
Nu Nv Nw
27
26
25
24
23 22 21
27
26
25
24
23 22 21
0.4 ~ 0.6 V
0.4 ~ 0.6 V
PFC_IPM chec
U, V, W ➔ R S
CAUTION
- 75 -
49
FM..AH
FM15AH t/m FM25AH
4. Trouble Shooting
Display
code
Title
Max. C/T
22
Cause of error
Input Over Current
1. Malfunction of Compressor
2. Blocking of Pipe
3. Low Voltage Input
4. Refrigerant, Pipe length, Blocked...
Is installation
condition normal?
No
Yes
Are the resistance
compressor normal?
No
operation
1.083~1.123Ω ±5%
Yes
Is compressor
Wire connection
condition normal?
No
(bad contact)
Yes
power connection normal?
No
Check connection between inverter PCB assembly and
bridge diode(misconnection, disconnection)
→ wiring again if abnormality found
No
Check
R~S/S~T/T~R phase voltage is 380V ±10%
R~N/S~N/T~N phase voltage is 220V ±10%
abnormal.
No
Yes
Yes
normal?
Yes
- 108 -
50
FM15AH t/m FM25AH
FM..AH
4. Trouble Shooting
Check Point
1. Check the power source.(200~240V)
5. Check the CT Sensor Output signal (Check output pin 1.2 of the CT Sensor : 5V )
Tester
CT Sensor Output
(at the INVERTER PCB)
- 109 -
51
FM..AH
FM27AH t/m FM57AH
4. Trouble Shooting
Display
code
22
Title
Cause of error
Max. C/T
Input Over
Current(27/30/40k-17A↑
48/56k-29A↑ )
1. Malfunction of Compressor
2. Blocking of Pipe
3. Low Voltage Input
4. Refrigerant, Pipe length, Blocked...
Is installation
condition normal?
No
Yes
Are the resistance
compressor normal?
No
operation
(0.188 ±7%)
Yes
Is compressor
Wire connection
condition normal?
No
(bad contact)
Yes
power connection normal?
No
Check connection between inverter PCB assembly and
bridge diode(misconnection, disconnection)
→ wiring again if abnormality found
No
Check
abnormal
No
Yes
Yes
normal?
Yes
- 76 -
52
FM27AH t/m FM57AH
FM..AH
4. Trouble Shooting
Check Point
1. Check the power source.(220V ±15%)
5. Check the CT Sensor Output signal
(27/30/40k - Check output the CT Sensor : DC 2.5±0.2V)
(48/56k - Check output pin 1.2 of the CT Sensor : 5V )
Vdc
< Input Power Source Check Point >
< Main PCB>
<CT Sensing Check Point>
< Inverter PCB>
<CT Sensing Check Point>
- 77 -
53
FM..AH
FM15AH t/m FM25AH
4. Trouble Shooting
Display
code
23
Title
DC Link Low voltage
Cause of error
• DC Link volt is below
300V
• Check point & Normal condition
• Check the TAB1 is connect.
• At not operating : DC Link voltage(260V↑ )
• At Comp operating : DC Link voltage(500V↑ )
Is DC Link voltage
under 380V ?
No
Check the DC link Voltage AD Input of Inverter PCB
If AD Input is strange, change the Inverter PCB
(refer the next page.)
Yes
Is input voltage normal ?
No
abnormal.
No
Check connection from terminal block to
Inverter PCB assembly CN_L1(R), CN_L2(S), CN_L3(T)
Yes
Is Inverter PCB assembly
Power connection normal?
Yes
Is Inverter PCB Normal?
No
Yes
- 110 -
54
FM15AH t/m FM27AH
FM..AH
4. Trouble Shooting
Check Point
1. Check the Tab1 connection condition. (Refer to outdoor wiring diagram)
2. Check the CN_L1(R), CN_L2(S), CN_L3(T) connection condition
3. Check the DC Link voltage at not operating(380V↑ )
4. Check the DC Link voltage at Comp operating(500V↑ )
5. Check DC Link Sensing Signal (Refer the Picture)
Vdc
500Vdc ±10%
+
GND
<INVERTER PCB>
<DC Link Voltage Check Point>
GND
Tester
DC Link Voltage
oltage INV
<INPUT VOLTAGE Check Point>
- 111 -
55
FM27AH t/m FM57AH
4. Trouble Shooting
Display
code
23
FM..AH
Title
DC Link Low voltage
Cause of error
• DC Link volt is below
140Vdc
• Check point & Normal condition
• Check theCN_(L),CN_(N) Connection.
• At not operating : DC Link voltage(280V↑ )
• At Comp operating : DC Link voltage(340V↑ )
No
Check L~N Voltage is 220V±15%
Yes
No
Inverter PCB assembly CN(L), CN(N)
Yes
No
Yes
Recheck power and installation
condition
- 78 -
56
FM27AH t/m FM57AH
FM..AH
4. Trouble Shooting
Check Point
1. Check the WCN_P(L),P(N) Connection condition at the Main PCB.(Refer to outdoor wiring diagram)
4. Check DC Link Sensing Signal :2.4~2.8V (Refer the Picture)
27/30/40k
Vdc
< Main PCB>
Vdc
<DC_LINK Sensing Check Point>
- 79 -
57
FM..AH
4. Trouble Shooting
FM49AH t/m FM57AH
Vdc
N
GND
< Inverter PCB>
L
<Connection Check Point>
Vdc
DC_LINK
GND
- 80 -
58
FM..AH
Display
code
Title
24
Press S/W Open
Cause of error
S/W open.
4. Trouble Shooting
• Check the connection CN_L/PRESS,H/PRESS
Is high pressure switch
connector connected
to PCB?*
No
Connect securely
Yes
Is high pressure switch
connector short
during off time?**
No
Replace high pressure switch
Yes
Is SVC valve open?
No
Open SVC valve
Yes
Is this error appeared
again after reset?
No
Re-check momentary
problem or not
Yes
Is high pressure
more than 2500kPa
at manifold gauge?
No
Replace PCB
Yes
Is high pressure of
LGMV similar as
at manifold gauge?
No
Replace high pressure sensor
Yes
Check pipe is blocked or
not and take measure
- 81 -
59
4. Trouble Shooting
FM..AH
Check Point
1. Check the connection of H/press switch
2. Check short or not at the connector of high pressure switch (Normal open)
27/30/40k
< Main PCB : Connection Check Point >
< Checking the Press switch >
48/56k
< Main PCB : Connection Check Point >
< Checking the H/press switch >
- 82 -
60
FM..AH
FM15AH t/m FM25AH
4. Trouble Shooting
Display
code
Title
25
Input voltage
Cause of error
Abnomal Input Voltage
(R,S,T -N /140Vac↓ ,
300Vac ↑ )
Check the power source.
No
abnormal.
Yes
No
Yes
<INVERTER PCB>
Tester
GND
< CH25 Check Point >
INPUT VOLTAGE
VOL AGE INV
- 112 -
61
FM..AH
FM27AH t/m FM57AH
Display
code
Title
Cause of error
25
Input voltage
(140Vac , 300Vac)
4. Trouble Shooting
No
Yes
No
Yes
Recheck power and
Check Point
1. Check the Input Voltage (L–N ➔ 220V±10%)
2. Check Input Voltage Sensor output voltage (2.5Vdc±10%)
- 83 -
62
4. Trouble Shooting
FM..AH
FM27AH t/m FM57AH
Vdc
< Inverter PCB>
< Input Voltage Sensing Check Point >
FM49AH t/m FM57AH
Vdc
INPUT(V)
GND
< Input Voltage Sensing Check Point >
< Inverter PCB>
- 84 -
63
FM..AH
FM15AH t/m FM25AH
Display
code
Title
26
DC Compressor
Position
Cause of error
• Compressor
Starting fail error
4. Trouble Shooting
Is installation
condition normal?
No
operation
Yes
Are the resistance
compressor normal?
No
(0.188 ±7%)
Yes
Is compressor
Wire connection
condition normal?
No
(bad contact)
No
Yes
Yes
- 85 -
64
FM..AH
FM27AH t/m FM57AH
Display
code
Title
26
DC Compressor
Position
Cause of error
• Compressor
Starting fail error
4. Trouble Shooting
Is installation
condition normal?
No
operation
Yes
Are the resistance
compressor normal?
No
(1.083~1.123Ω ±5%)
Yes
Is compressor
Wire connection
condition normal?
No
(bad contact)
No
Yes
Yes
Check Point
1. Check the connection condition of PCB.
2. Check the connection condition of Comp. U,V,W wire.
3. Check the comp resistor and insulation resistance .
WVU
4. Check the IPM.(Refer 106 page)
5. Check the pressure of refrigerant.
6. Check the Service Valve Open.
- 113 -
65
FM..AH
4. Trouble Shooting
Display
code
27
Title
Cause of error
defect/Ref. overcharge)
2. Compressor damage (Insulation damage/Motor
Inverter PCB input
damage)
current is over100A(peak)
3. Input voltage abnormal (L,N)
for 2us
5. Inverter PCB assembly Damage (input current
sensing part)
AC Input Instant over
Current Error
Is installation
condition normal?
No
Yes
No
Check
L~N phase voltage is 220V ±15%
No
No
Yes
condition normal?
Yes
Is compressor
Wire connection
condition normal?
Yes
normal?
No
Check inverter PCB assembly PFCM normality
Yes
Recheck power and
※ PFCM Moudle checking method
① Set the multi tester to diode mode.
② Check short between input signal pin which are
placed below PFC Module
③ Replace PCB assembly if it is short between pins
except No.4,5 pins.
Signal pin
CAUTION
PFCM module No.4,5 pins are internal short state.
8
- 86 -
1
66
FM..AH
FM27AH t/m FM57AH
Display
code
Title
Cause of error
28
Inverter DC link high
voltage error
Inv PCB DC link voltage
supplied over 420V
4. Trouble Shooting
1. Input voltage abnormal (L~N)
2. ODU inverter PCB damage(DC Link voltage
sensing part)
No
Yes
No
Inverter PCB assembly CN(L), CN(N)
Yes
No
Recheck power and installation
condition
- 87 -
67
FM27AH t/m FM57AH
4. Trouble Shooting
FM..AH
Check Point
1. Check the CN_(L),CN_(N) Connection condition at the Inverter PCB.(Refer to outdoor wiring diagram)
4. Check DC Link Sensing Signal : 2.4~2.8V (Refer the Picture)
27/30/40k
Vdc
< Main PCB>
Vdc
- 88 -
68
FM..AH
FM27AH t/m FM57AH
4. Trouble Shooting
48/56k
Vdc
N
GND
< Inverter PCB>
L
<Connection Check Point>
Vdc
DC_LINK
GND
- 89 -
69
FM..AH
4. Trouble Shooting
Display
code
29
Title
Inverter compressor over
current
Cause of error
1. Overload operation
(Pipe clogging/Covering/EEV defect/Ref. overcharge)
Inverter compressor input
2. Compressor damage(Insulation damage/Motor
current is over 30A
damage)
3. Input voltage low
Is installation
condition normal?
No
Yes
Are the resistance
compressor normal?
No
operation
(0.188 ±7%)
Yes
Is compressor
Wire connection
condition normal?
No
(bad contact)
Yes
No
Check
abnormal
No
Yes
normal?
Yes
- 90 -
70
FM..AH
4. Trouble Shooting
Display
code
Title
32
D-pipe (Inverter)
temp. high
(105°C↑ )
33
D-pipe (Constant)
temp. high
(105°C↑ )
Cause of error
(Cons.) temp. high
D-Pipe temp.
Toff(105) °C
T2(95) °C
T1(90) °C
COMP Frequency
Normal
(Hz)
LEV Openness
(Pulse)
Normal
Normal
OFF
Normal
OFF Control
Check Point
• CH 32
• CH 33
4. Check the constant compressor. (same with CH21)
- 68 -
71
FM..AH
Display
code
Title
39
Transmission Error
Between (PFC Micom →
INV Micom)
Cause of error
4. Trouble Shooting
1. Micom defect/Circuit defect
2. Different Micom S/W Version
Communication Error
Between PFC Micom
and INV Micom.
Is PFC Micom & INV Micom
S/W Program normal?
No
Upgrade Micom Program
Yes
No
Yes
- 115 -
72
FM..AH
FM15AH t/m FM25AH
4. Trouble Shooting
Display
code
40
Title
C/T
Sensor Error
Cause of error
(Open / Short)
• The voltage of "C01N" Is 4.0Vdc(25A) .
• Check CT Sensor output voltage : 2.5Vdc
±5%
Is CT Sensor Output is right?
No
If the CT Sensor output is not 2.5Vdc°æ5%
Replace the Inverter PCB
No
Check the input voltage source
(Is nomal the offset of R-N,T-N voltage)
Yes
Yes
Recheck the Inverter PCB and
Tester
CT Sensor Output
(at the INVERTER PCB)
GND
COMP CURRENT
U,V ,W
U,V,W
<INVERTER PCB>
INPUT
VOL AGE INV
VOLTAGE
- 116 -
73
FM..AH
FM27AH t/m FM57AH
Display
code
Title
C/T
Sensor Error
40
4. Trouble Shooting
Cause of error
(Open / Short)
• Check CT Sensor output voltage :
2.5Vdc ±5%
No
Yes
No
Yes
Recheck power and
Check Point
1. Check the Input Voltage (L–N ➔ 220V±10%)
2. Check Input Voltage Sensor output voltage (2.5Vdc±10%)
- 91 -
74
4. Trouble Shooting
FM..AH
FM27AH t/m FM41AH
Vdc
1
2
3
< Inverter PCB>
< CT Sensing Check Point >
FM49AH t/m FM57AH
Vdc
INPUT(CT)
GND
< CT Sensing Check Point >
< Inverter PCB>
- 92 -
75
FM..AH
4. Trouble Shooting
Display
code
Title
41
D-pipe sensor (Inverter)
• Open / Short
• Soldered poorly
• Normal resistor : 200KΩ / at 25°C (Unplugged)
44
Air sensor
• Open / Short
• Soldered poorly
45
• Open / Short
• Soldered poorly
46
Suction Pipe sensor
• Open / Short
• Soldered poorly
47
D-pipe sensor (Constant)
• Open / Short
• Soldered poorly
65
Heat sink sensor
• Open / Short
• Soldered poorly
Cause of error
Check Point
1. Estimate the resistance of each sensor.(Unplugged)
2. Estimate the voltage of each sensor.(Plugged)
3. If the resistance of the sensor is 0 kΩ or ∞, then sensor is abnormal.
Ω
If the voltage of the sensor is 0 V or 5Vdc, then sensor is abnormal.
- 69 -
76
FM..AH
FM15AH t/m FM25AH
4. Trouble Shooting
Display
code
Title
51
Over capacity
60
EEPROM
Check sum
Cause of error
• Over capacity
Combination
• Check sum error
Model
Gross max. capacity
A2UW146FA3
21k
Max. single indoor unit capacity
A2UW166FA0
A2UW166FA1
24k
12k
A3UW186FA0
A3UW216FA3
A4UW246FA3
33k
18k
Check Point
• CH 51
• CH 60
- 70 -
77
FM..AH
FM41 t/m FM57AH
4. Trouble Shooting
Display
code
Title
51
Over capacity
• Over capacity
60
Over capacity
• Check sum error
Cause of error
Model
Gross Max. Capacity[Btu/h]
A7UW428FA3
54k
A8UW488FA3
62k
A9UW548FA3
73k
Max. Single Indoor Unit Capacity[Btu/h]
24k
Check Point
• CH 51
• CH 60
- 118 -
78
FM..AH
Display
code
Title
Cause of error
52
Transmission error
between (Inverter PCB ➔
Main PCB)
Main controller of Master
unit of Master unit can’t
receive signal from
inverter controller
4. Trouble Shooting
1. Power cable or transmission cable is not
connected
2. Defect of outdoor Main fuse/Noise Filter
3. Defect of outdoor Main / inverter PCB
Is transmission
LED (Yellow) of inverter
compressor
PCB on?
No
Is noise filter or fuse
normal?
No
Replace noise filter or fuse
Yes
Yes
Is transmission cable
connected correctly?
No
Re-connect transmission cable
Yes
No
Is MAIN PCB normal?
Replace MAIN PCB
Yes
Check Point
- Check the Transmission connector and LED (Main & Inverter)
48/56k
<Inverter PCB>
<MAIN PCB>
- 93 -
79
FM..AH
Display
code
Title
54
3-phase wrong wiring
of main outdoor unit
Cause of error
4. Trouble Shooting
• 3-phase wrong wiring of
outdoor unit (Reverse
Phase /omission of
phase)
• Abnormal Main PCB
• No connection of CN_Phase
• Changed R, S, T connection order
No
Is PCB connection Normal?
Yes
No
Yes
1. Check the Connection condition of PCBs
1) Input &Output (R,S,T,N) wire Connection of Noise Filter.
2) Check reverse connecting and non connecting for
CN-L1(R), CN-L2(S), CN-L3(T) of the Inverter PCB
3) Check the CN-AC-220V Connector of the Inverter PCB
and T-N connector of the Noise Filter
2. Check the connection or damage of power source fuses.
R~S/S~T/T~R phase voltage is 380V °æ 10%
R~N/S~N/T~N phase voltage is 220V °æ10%
Check connection condition and wiring if power is abnormal.
T-N
R
S
T
N
R
S
T
Fuse
R S T
N
R
G
S T
N
<Terminal Block&Fuse Check>
<Noise Filter Connection Check>
CN-L3(T) CN-L1(R)
CN-AC-220V
CN-L2(S)
<INVERTER PCB Connection Check>
- 119 -
80
FM27AH t/m FM57AH
4. Trouble Shooting
Display
code
60
FM..AH
Title
Cause of error
1. EEPROM contact defect/wrong insertion
2. Different EEPROM Version
3. ODU Inverter & Main PCB assembly damage
Inverter PCB & Main
EEPROM Access error
EEPROM check sum error and Check SUM error
Is EEPROM insertion normal?
No
1.Check EEPROM insert direction/connection condition
2.Check EEPROM Check SUM
→ Replace if abnormality found
Yes
No
Yes
MAIN PCB assembly normal?
No
Replace MAIN PCB assembly
Yes
Check Point
- Check the EEPROM Check sum & Direction
27/30/40k
<EEPROM Direction Check Point>
<MAIN PCB>
- 94 -
81
FM..AH
4. Trouble Shooting
FM49AH t/m FM57AH
<MAIN PCB>
<Inverter PCB>
<EEPROM Direction Check Point>
- 95 -
82
FM..AH
4. Trouble Shooting
Display
code
Title
Cause of error
61
Condenser pipe sensor
temp. high
• Condenser pipe sensor
detected high
temp.(65°C)
62
Heat sink sensor
temp. high
• Heat sink sensor detect- • Check the Heat sink sensor (10kΩ ±10% at 25°C)
ed high temp.(85°C)
• Check that outdoor fan is driving rightly
Gd`sRhmjပ౜
Snee
8/°C
S1
74°C
S0
7/°C
ქኩ༯
ZGy\
໬Ⴓ ໎ཙ
ქኩ༯ ხᄅ
α
Gy
Cnvm
ጒ੾
ხᄅ
α
Gy
Cnvm
NEE
α
Gy
Cnvm
໬Ⴓ
ქኩ༯
Comp frequecy control accoding to heatsink temp.
■ Comp frequency control according to heat sink temp.
Is normal heatsink sensor
connecting ?
No
Connect the heatsink sensor right
Yes
Is normal heatsink sensor ?
(10kΩ ±10% at 25°C)
No
Replace the heatsink sensor
Yes
Is normal Inverter PCB ?
No
Replace the heatsink sensor
Yes
Recheck power and
- 120 -
83
4. Trouble Shooting
Display
code
65
FM..AH
Title
Heatsink High error
Cause of error
Inverter PCB heatsink
sensor is open or short
1. ODU fan locking
2. Heatsink assembly of INV PCB assemble
condition abnormal
3. Defect of temperature sensing circuit part defect
of INV PCB
Is installation
condition normal ?
No
1. Check fan locking
2. Check covering of heat exchanger
3. Check distance between ODU and obstacles
4. Check pipe distortion and abnormality
5. Check service valve is opened
→ Eliminate causes for abnormal condition
Yes
Is assemble condition
of INV PCB heatsink normal ?
No
Check assemble condition between INV PCB heatsink and
PFC & IPM module
Yes
Is PCB temperature
sensing part normal ?
No
Check resistance between NO.19 pin and NO.20 pin
of PFC module
Check resistance between NO.24 pin and NO.25 pin
of PFC module
→ 7KΩ ±10%(at 25°C)
→ Replace PCB if abnormality found
Check Point
1. Check resistance between No.19 pin and NO.20 pin of PCB PFC module
2. Check resistance between No.24 pin and NO.25 pin of PCB PFC module - only 48/56k
3. Resistance value should be in 7kΩ ±10%.(at 25°C).
4. Check the PFC Module No.19, 20 and IPM Module No.24, 25 pin soldering condition.
- 98 -
84
FM..AH
4. Trouble Shooting
FM27AH t/m FM40AH
PFCM :
Measuring resistance
between No.19,20 pin
FM49AH t/m FM57AH
PFCM :
- 99 -
IPM :
85
FM..AH
FM15AH t/m FM25AH
4. Trouble Shooting
Display
code
Title
Cause of error
67
Outdoor fan
lock
• Outdoor fan is not operating
• Check the fan condition.
• Check the fan connector
• Check the fan control part of the INVERTER PCB
CH67(Outdoor fan lock) occurrence
Is fan connector condition right ?
No
Do right fan connector condition
Yes
No
Is Fan motor nomal?
Change abnomal motor
Yes
<INVERTER PCB connection>
<fan motor middle connection>
<FAN Motor Connection check>
- 121 -
86
FM27AH t/m FM57AH
4. Trouble Shooting
Display
code
67
FM..AH
Title
Fan Lock Error
Cause of error
1. ODU fan locking
Fan RPM is 10RPM or
2. Heatsink assembly of INV PCB assemble condiless for 5 sec. when ODU
tion abnormal
fan starts or 40 RPM or
3. Defect of temperature sensing circuit part defect
less after fan starting.
of INV PCB
Is ODU Fan Motor Assemble
condition normal?
No
Check ODU Fan Motor assemble condition and fan locking
→ Reassemble or replace if abnormality found
No
2. Check voltage between 1pin and 4pin of Fan Motor
(1±0.2V)
3. Replace Inverter PCB if abnormality found.
Yes
Is ODU Fan Motor normal?
Yes
Is wire connection of
ODU Fan Motor wire normal?
No
Check wiring between OUD fan motor and Inverter PCB
( Check if Hall Senor and Motor output terminal color is
matched)
Yes
No
Replace Inverter PCB assembly
Yes
Check Point
1. Check voltage between 1pin and 4pin of Fan Mortor connector (Tester diode mode)
2. Voltage vaule should be in 1V ±0.2V.
- 100 -
87
FM..AH
4. Trouble Shooting
FM27AH t/m FM41AH
Check voltage betwen
1pin and 4pin of fan motor
Fan motor
connector
Tester
<Main PCB>
FM49AH t/m FM57AH
<Inverter PCB>
- 101 -
88
FM..AH
4. Trouble Shooting
Display
code
73
Title
AC input instant over current error
(Matter of software)
Cause of error
Inverter PCB input power
current is over 48A(peak)
for 2ms
defect/Ref.overcharge)
2. Compressor damage
(Insulation damage/Motor damage)
3. Input voltage abnormal (L, N)
5. Inverter PCB assembly damage
(input current sensing part)
Is installation
condition normal?
No
Yes
No
Check
L~N phase voltage is 220V ± 10%
No
No
Yes
condition normal?
Yes
Is compressor
Wire connection
condition normal?
Yes
normal?
No
Yes
Recheck power and
- 102 -
89
FM..AH
4. Trouble Shooting
27/30/40k
N
L
< Noise Filter wiring Check Point >
N
L
< Main PCB wiring Check Point >
- 103 -
90
FM..AH
4. Trouble Shooting
48/56k
N
L
< Noise Filter wiring Check Point >
L
N
N
L
< Inverter PCB wiring Check Point >
- 104 -
91
LG
Multi-split
Variabel (aan/uit)
M..AC/AH
92
Multi-split: Aan / Uit
M..AC / AH
Functions
Signal Receptor
Receives the signals from the remote controller.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
: Lights up during the system operation.
: Lights up during Sleep Mode Auto operation.
: Lights up during Timer operation.
: Lights up during Defrost Mode or Hot Start operation (Heat pump model only)
: Lights up during outdoor unit operation. (Cooling model only)
On/Off
Sleep Mode
Timer
Signal
receptor
Defrost Mode
OUT OUTDOOR UNIT
DOOR OPERATION
Operation indication lamps
Receives the signals from the remote controller.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
: Lights up during the system operation.
: Lights up during Sleep Mode Auto operation.
Timer
: Lights up during Timer operation.
Defrost Mode
: Lights up during Defrost Mode or Hot Start operation.(Heat pump model only)
Outdoor unit operation : Lights up during outdoor unit operation.(Cooling model only)
PLASMA
: Indicate PLASMA purifier operation.
On/Off
Sleep Mode
Operation indication lamps
Self-diagnosis Function
■ Error Indicator
• The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble.
• Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table.
• If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed.
• After error occurrence, if error is released, error LED is also released simultaneously.
• To operate again on the occurrence of error code, be sure to turn off the power and then turn on.
• Having or not of error code is different from Model.
Error
Code
1
2
5
Error LED
(Indoor body operation LED)
5sec
(once)
3sec
3sec
3sec
(twice)
3sec
3sec
(5times)
(6times)
3sec
(7times)
7
• Indoor air temperature thermistor
open/short.
• Indoor air TH ass'y check
• Indoor inlet pipe temperature thermistor
open/short.
• Indoor inlet pipe TH ass'y
check
• Poor communication
• Communication line/circuit
• Indoor outlet pipe temperature
thermistor open/shor
• Indoor outlet pipe TH ass'y
check
• Defferent Operation (Simultanueous
operation of cooling and heating.
• Operate indoor units only
heating or cooling mode.
3sec
• Indoor EEP ROM data (Art type only)
• Replace main PCB DC ASM
• Outdoor air temperature thermistor
open/short
• Outdoor air TH ass'y check
• Outdoor pipe themperature
thermistor open/short
• Outdoor pipe TH ass'y check
• Overload combination
• Indoor unit combination check
(Refer to Max. capacity)
(9times)
9
3sec
3sec
3sec
45
3sec
51
SVC check point
3sec
6
44
Error contents
3sec
3sec
: ten digits
: one digits
93
Multi-split
Multi-split tot 2005
A2-C..
A3-C..
A2-H..
A3-H..
LM..
94
Multi-split: Aan / Uit voor 2005
(modellen, zie pag. 105)
Display Function
1. Heating Model
2. Cooling Model
Operation Indicator
Operation Indicator
• Cooling, Soft Dry, Fan, Heating
• Cooling, Soft Dry, Fan
Sleep Timer Indicator
Sleep Timer Indicator
• Sleep Mode
• Sleep Mode
Timer Indicator
Timer Indicator
• Timer Mode
• Timer Mode
Compressor on Indicator
Defrost Indicator
OUT
DOOR
• Hot-start, Defrost
■ Error Indicator
• The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble.
• Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table.
• If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed.
• After error occurrence, if error is released, error LED is also released simultaneously.
• To operate again on the occurrence of error code 12, be sure to pull out power cord and then re-insert.
• Having or not of error code is different from Model.
Error
Code
1
2
Error LED
Error contents
• Indoor suction temperature
thermistor open/short.
• Indoor TH ass'y check
• Indoor pipe temperature
• Outdoor suction temperature
• Outdoor TH ass'y
• Outdoor pipe temperature
check
• Abnormal operation of multi
product.
• Resetting of remocon
(Simultanueous operation of operating mode
cooling and heating)
(once)
3sec
(twice)
3sec
3sec
(3times)
3sec
3sec
3
3sec
(5times)
3sec
• Poor communication
5
(once)
3sec
(twice)
(once)
12
3sec
3sec
3sec
SVC check point
(twice)
• Communication
line/circuit check
• Primarily check
• Misconnection of connecting refrigerant pressure
cables
• Connecting pipe check
• Connecting cable check
95
LG
RAC
Standaard wandunit (aan/uit & Inverter)
Art Cool Deluxe (aan/uit & Inverter) (hoge wand)
Art Cool Panel (aan/uit & Inverter)
96
RAC
Standaard wandunit (aan/uit)
Alle typen/uitvoeringen o.a:
LS-J.. / LS-K.. / LS-L..
S..ACL / S..AH / S..ACP / S..AHP
G..AH
ART COOL Panel / Deluxe (aan/uit)
LS-P.... ..
A09/12/18AH*
C07/09/12AH*
97
RAC: AAN / UIT
Standaard wandunit, Panel & Deluxe
Operation
Display Function
1. Heating Model
2. Cooling Model
Operation Indicator
Operation Indicator
• Cooling, Soft Dry, Fan, Heating
• Cooling, Soft Dry, Fan
Compressor on Indicator
Deicer Indicator
OUT
DOOR
• Hot-start, Deice
Error
Code
1
Error Display LED
(once)
3sec
3sec
3sec
Error contents
• Indoor room temperature
thermistor open/short
• Indoor pipe temperature
SVC check point
• Indoor Thermistor
assembly check
98
LG
RAC
Standaard wandunit Inverter
LS-N....
LS-Q....
LS-R....
S..AN
S..AW
99
RAC: Wandunit Inverter
LS-N/Q/R, S..AN & S..AW
Self-diagnosis function
1. The malfunction indicator of indoor (see the operating LED of the INDOOR)
Error
Code
The cause of malfunction
Malfunction indicator
The operating state
Indoor TH. is short or open.
The operating LED will be blinking once.
Keep operating state.
Outdoor TH. is short or open.
The operating LED will be blinking twice.
4
Temp. of Heat sink is over 95°C.
/Heat sink TH. is short or open.
The operating LED will be blinking 4 times.
Restart compressor when Heat sink
Temp is 85°C below.
5
Comunication error (serial
comunication).
The operation is off(enable to restart
by remote controller).
DC peak error.
Compressor will be turned off immediately.
(not enable to restart by remote controller)
7
Running current is overloaded. (CT2)
8
Indoor fan lock error
(BLDC fan model)
9
Outdoor fan lock error
(BLDC fan model)
D-PIPE TH is short or open.
(restart compressor when D-PIPE TH. is
recovred)
1
2
6
10
❈ Error code ➅, ➆ can’t be operated unless the power cord is removed.
2. The malfunction indicator of outdoor (see the LED01M on the outdoor PCB ass’y)
Error
Code
The LED01M will be blinking
twice.
4
Temp. of Heat sink is over 95°C,
or Heat sink TH. is shortor open.
The LED01M will be blinking 4
times.
Restart compressor when heat sink
Temp. is 85°C below.
5
comunication).
times.
DC peak error.
times.
7
Running current is overloaded.
times.
9
(BLDC fan model)
times.
times.
recovered)
2
6
10
The operating state
100
RAC
ART COOL Deluxe Inverter
C09AW*
C12AW*
101
RAC: ART COOL Inverter
C09AW* & C12AW*
Error
Code
The operating state
The operating LED will be blinking once.
The operating LED will be blinking twice.
4
5
comunication).
DC peak error.
7
8
(BLDC fan model)
9
(BLDC fan model)
recovred)
1
2
6
10
Error
Code
twice.
4
times.
5
comunication).
times.
DC peak error.
times.
7
times.
9
(BLDC fan model)
times.
times.
recovered)
2
6
10
The operating state
102
LG
RAC
ART COOL Deluxe Inverter
C18AW*
C24AW*
103
RAC: ART COOL Inverter
C18AW* & C24AW*
Error
Code
The operating state
The display show "C1"
4
5
comunication).
DC peak error.
7
8
(BLDC fan model)
9
(BLDC fan model)
The display show "CA"
recovred)
1
2
6
10
Error
Code
twice.
4
times.
5
comunication).
times.
DC peak error.
times.
7
times.
9
(BLDC fan model)
times.
times.
recovered)
2
6
10
The operating state
104
RAC
ART COOL Panel Inverter
A09AW
A12AW
A09AW1
A12AW1
105
RAC: ART COOL PANEL Inverter
A..AW & A..AW1
Self diagnosis Function
Error
Code
1 time
1
Cause of Error
Error Indicator
1time
3 sec
1time
3 sec
1time
3 sec
1time
3 sec
2 times
2 times
2 times
2 times
3 sec
3 sec
3 sec
2
4
5
4 times
4 times
3 sec
3 sec
5times
5times
3 sec
3 sec
6times
6
6times
3 sec
3 sec
8times
8
8times
3 sec
9times
9
9times
3 sec
10 times 10 times
10
3 sec
1time
12
2times
1time
3 sec
1time
13
1time
4 times
3 sec
• Outdoor Temp. sensor error
- Sensor open or short
O
O
ON
• Heat Sink sensor error
- Heat Sink temp is over 95
°…
O
O
ON
O
O
OFF
• DC Peak error
O
O
SHUT
DOWN
• Over current error (CT2)
O
O
SHUT
DOWN
• Indoor fan lock error
(BLDC fan model only)
O
• Outdoor fan lock error
O
O
OFF
• D-Pipe TH. is short or open.
O
O
ON
• Communication error
ON
1time
OFF
O
ON
3 times
• PSC Error
- PSC Fault Error
O
ON
4 times
• Comp Phase Current Error
(180 Driver Comp Control
Model Only)
O
ON
3 sec
3 times
O
• EEPROM Error
- EEPROM Check sum Error
3 sec
1time
14
2times
Indoor
Operation
• Indoor Temp. sensor error
7times
7times
7
Display
Indoor Outdoor
106
A..AW & A..AW1
Troubleshooting for error code
Error code
Description
1
Indoor TH. is short or
open
Check flow
Cause of error
• Indoor TH. (sensor) is short or open
• Indoor TH. (sensor) is not connected to the indoor pcb assembly
• Damage or defect on the sensing circuit of indoor pcb assembly.
(R01H, R02H, R03H, R04H, C01H, C02H)
YES
Indoor TH. is connected to
Indoor pcb assembly ?
YES
Sensing circuit of indoor
pcb is right ?
Indoor TH. is right ?
No
No
Check Indoor TH.
- Measure resistance of TH.
(air : about 10k . at 25 °C,
pipe : about 5k . at 25 °C)
- Connect to CN-TH1 in
indoor pcb assembly
Error code
Description
2
Outdoor TH. is short or
open
Check flow
Outdoor TH. is connected to
outdoor pcb assembly ?
No
outdoor pcb assembly
No
- Check soldering state of
R01H ~ R04H, C01H, C02H
Cause of error
• Outdoor TH. (sensor) is short or open
• Outdoor TH. (sensor) is not connected to the outdoor pcb assembly
• Damage or defect on the sensing circuit of outdoor pcb assembly.
(R03H~R06H, C02H, C03H)
YES
YES
Outdoor TH. is right ?
No
Check outdoor TH.
(air : about 10k . at 25 °C,
pipe : about 5k . at 25 °C)
Sensing circuit of outdoor
pcb is right ?
No
R03H ~ R06H, C02H, C03H
107
A..AW & A..AW1
• 9K / 12K
Description
Error code
4
Cause of error
Heat-sink Temp. is over
95°C
Heat-sink TH.
is open or short
Check flow
Heat-sink TH is connected to
outdoor PCB assembly?
No
outdoor PCB assembly
• Heat-sink TH. is damaged(short or open).
• Heat-sink Temp. is over 95°C
• Damage or defect on the sensing circuit of outdoor pcb assembly.
(R01H, R02H, C01H)
YES
YES
Heat-sink TH. in INV-IC is
Right ?
No
Check heat-sink TH.
(about 10k . at 25 °C)
pcb is right ?
No
R01H, R02H, C01H
108
A..AW & A..AW1
Description
Error code
5
Cause of error
• Wrong or missing wiring between indoor and outdoor unit cable
• Defect of communication components in indoor pcb assembly
• Defect of communication components in outdoor pcb assembly
• Defect of power supply components in outdoor pcb assembly
• No ground connection in air conditioner unit
(affected by noise in power source)
Communication Error
Check flow
YES
No
Indoor
1(BR)
2(BL)
3(GN/YL)
4(RD)
YES
Is the voltage of T/Block
,
in outdoor about
AC 220/240V ?
Wiring connection
Is right ?
Is the voltage of GND & DC5V in
Outdoor pcb about DC 5V ?
No
Outdoor
1(BR)
2(BL)
3(GN/YL)
4(RD)
No
Check power connector
Is not connected to the
T/Block in indoor unit.
YES
Check FUSE, NF01/02J, PTC,
Power Module, BD-01S in
Outdoor pcb assembly
YES
Communication circuit of indoor
& outdoor pcb Is right ?
No
Check IC01K, IC02K,D01K~D03K,
ZD01K~ZD03K, R01K~R10K,
C01K~C04K
Ground connection is installed ?
(power outlet or outdoor chassis)
No
Earth port
Install ground connection from outdoor
unit. (In case power outlet has no earth
port)
109
A..AW & A..AW1
Error code
Cause of error
Description
6
DC Peak Error
Check flow
• Supplied power is not normal
• Comp Connector (CN-U,V,W) is disconnected or inserted to wrong
position
• Compressor is damaged (coil short) ➔ replace compressor
• Too much Refrigerant
• Defect in outdoor pcb assembly ➔ replace pcb assembly
YES
Supplied voltage to
Outdoor pcb is about
AC 220/240V ?
YES
Is connector (CN-U,V,W)
connected to compressor and
inserted to pcb in right position ?
No
Refrigerant pressure is right ?
No
No
Check CN-U,V,W connector
(U : RD, V : BL, W : YL)
Check power source
YES
Check refrigerant pressure
and adjust.
YES
Inverter components in outdoor
right ?
Is the compressor right ?
No
No
Check resistance
Between U-V, V-W, U-W port.
→ Short / Open circuit
(Comp.motor coil error)
→ normal : 1 ~2 .
Between U,V,W and Body
°Ê normal : over10M .
* 9 K/12K Model
Check
Short of SPM3 pins (GND - P, U, V, W pin)
Direction of D01Z~D03Z, C08Z,10Z,12Z,16Z
Assembling state of R01P ~ R21P & IC01P
Assembling state of screw between INV-IC &
Heat-sink
DC 15V output of Power module.
U
.
V
W
pcb assembly are
* 18 K Model
Check
Short of SPM2 pins (GND – P, U, V, W pin)
Direction of D01Z~D03Z, C08Z,10Z,12Z,16Z
Assembling state of R01P ~ R21P & IC01P
Assembling state of screw between INV-IC &
Heat-sink
DC 15V output of Power module.
110
A..AW & A..AW1
Error code
Description
7
Over current Error
(CT2)
Check flow
Cause of error
• Supplied power is not normal
• Indoor/outdoor fan is locked
• Too much refrigerant
• Defect in current sensing circuit in outdoor pcb assembly
YES
YES
Supplied voltage to
Outdoor pcb is about
AC 220/240V ?
Does indoor / outdoor fan work
normally ?
No
No
Check indoor / outdoor fan and
adjust.
Check power source
Refrigerant pressure is right ?
No
Check refrigerant pressure
and adjust.
YES
Current sensing circuit is right ?
No
Check current sensing circuit.
- check CT is damaged in outdoor pcb
(output wire is disconnected to pin or not)
- BD01N is inserted in right position
(refer marking on pcb and component)
- Spec of R01N (1k. ), R02N (1.65k. ) is correct
- Direction of diode (D01N, D02N) is right
111
A..AW & A..AW1
Error code
Description
8
Indoor fan is locked
Check flow
Cause of error
• Indoor fan is locked or separated
• Fan connector is not connected to indoor pcb assembly
• Defective in DC-fan driving circuit
YES
Indoor fan is rotating ? (1)
YES
Indoor fan is rotating ? (2)
No
DC–fan driving circuit is right ?
No
Check indoor unit
- remove obstacles in
indoor unit
- fan assembled correctly.
Description
9
Outdoor fan is locked
Outdoor fan is rotating ? (1)
No
Check outdoor unit
- remove obstacles in
outdoor unit
Check DC Fan Driving circuit
(Soldering state & Direction)
- R01F~R09F, C01F~C03F,
IC01F~IC03F, Q01F~Q02F, ZD01F
Check soldering state of
CN-Motor1 & assembling
state of DC Fan connector
Error code
Check flow
No
Cause of error
• Outdoor fan is locked by an obstacle (ex : branch of tree, bar…etc)
• Fan connector is not connected to outdoor pcb assembly
• Defective in DC-fan driving circuit
YES
YES
Outdoor fan is rotating ? (2)
No
Check connector is not
connected to outdoor pcb
assembly (CN-FAN2)
DC–fan driving circuit is right ?
No
Check DC Fan driving circuit
(Soldering state & Direction)
- R01F~R05F, C01F~C03F,
Q01F~Q04F, ZD01F
112
A..AW & A..AW1
Error code
10
Description
Cause of error
D-Pipe TH. is short or
open
Check flow
D_PIPE TH. is connected to
Outdoor pcb assembly ?
No
Connect to CN-D_PIPE
in outdoor pcb assembly
• D_pipe TH. is short or open
• D_pipe TH. is not connected to the outdoor pcb assembly
• Damage or defect on the sensing circuit of outdoor pcb assembly
YES
YES
D_PIPE TH. is right ?
No
Check D_PIPE TH.
(about 200k. at 25°C.)
pcb is right ?
No
R07H, R08H, C04H
113

LG Checkpointcodes U02.3.M

Transcription

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