LG Multi V 5 - Page 66

130 131
_TROUBLE SHOOTING GUIDE BOOK _
- 146 -
Copyright ©2017 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. Overload operation (Pipe clogging/Covering/EEV
defect/Ref. overcharge
2. ODU fan motor assemble condition abnormal
(Coil disconnection/Short/Insulation damage)
3. Fan PCB assembly defect
Error No. Error Type Error Point Main Reasons
IPM protection circuit activation
(over current)
ODU Fan PCB
IPM Fault
106*
Master
1061
Slave1
1062
Slave2
1063
Slave3
1064
n Error Diagnosis and Countermeasure Flow Chart
Check ODU fan motor assemble condition and locking
→ Reassemble or replace if abnormality found
1.Check fan motor U,V,W connector connection condition
2.Check fan motor wire disconnection
Yes
No
Yes
No
Yes
Is fan motor assemble
condition normal?
Is fan motor wire connection
condition normal?
Is fan PCB assemble
condition normal?
No
1.Check fan PCB connector condition
→ Reassemble if abnormality found
2.Check assemble condition between fan PCB and Heatsink
Yes
Is fan PCB assembly normal?
No
Fan Motor Wire connection
Replace fan PCB assembly
Recheck power and
installation condition
→ Reassemble wire if abnormality found
→ Replace ODU fan motor if abnormality found
→ Reassemble heatsink if abnormality found
Error No. Error Type Error Point Main Reasons
106*
ODU Fan PCB IPM
Fault
IPM protection circuit
activation
(over current)
1. Overload operation (Pipe clogging/Covering/
EEV defect/Ref. overcharge
2. ODU fan motor assemble condition abnormal
(Coil disconnection/Short/Insulation damage)
3. Fan PCB assembly defect
- 145 -
Copyright ©2017 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. Wrong connection between Comp and Fan
PCB
2. Fan PCB power not supplied
3. ODU Comp/Fan PCB defect
Error No. Error Type Error Point Main Reasons
Fan controller didn't receive signal
from Inverter PCB
Communication error
(Fan PCB ↔ Inverter
PCB)
105*
Master
1051
Slave1
1052
Slave2
1053
Slave3
1054
n
Error Diagnosis and Countermeasure Flow Chart
1. Check communication cable between Inverter PCB and fan PCB
→ Reconnect or replace wire if abnormality found
Check communication cable between Inverter PCB and fan PCB
→ Reconnect or replace wire if abnormality found
Yes
No
Yes
No
Is fan PCB communication
LED(yellow) blinking
normally?
Is Inverter PCB
communication LED(yellow)
blinking normally?
Yes
Is fan PCB assembly normal?
Recheck power and
installation condition
No
Communication Connector
Comp Fan Communication
Connection
Replace inverter PCB assembly
Fan PCB assembly
Yes
No
Error No. Error Type Error Point Main Reasons
105*
Communication
error
(Fan PCB ↔ In
-
verter PCB)
Fan controller didn't
receive signal from
Inverter PCB
1. Wrong connection between Comp and Fan
PCB
2. Fan PCB power not supplied
3. ODU Comp/Fan PCB defect
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