LG Multi V Manual page 95

Error
Error Type
No.
62 Heatsink High error
I Error Diagnosis and Countermeasure Flow Chart
Is installation
condition normal ?
Yes
Is assemble condition
of INV PCB heatsink normal ?
Yes
Is PCB temperature
sensing part normal ?
❈ PFCM Module checking method
Set the multi tester to diode mode.
Check resistance between No.19 pin and No.20 pin
of PCB PFC module
Resistance value should be in 7kΩ ±10%.
(at 25°C(77°F)).
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Only for training and service purposes
Error Point
Inverter PCB heatsink tem-
perature is over 95˚C(203˚F)
1. Check fan locking
2. Check covering of heat exchanger
3. Check distance between ODU and obstacles
No
4. Check pipe distortion and abnormality
5. Check service valve is opened
¡ Eliminate causes for abnormal condition
Check assemble condition between INV PCB heatsink and
No
PFC module
¡ Reassemble if abnormality found
Check resistance between No.19 pin and No.20 pin of PCB
PFC module
¡ 7kΩ ±10% (at 25°C(77°F))
No
¡ Replace PCB if abnormality found
PFCM :
Measuring resistance
between No.19,20 pin
- 95 -
Troubleshooting Guide
Main Reasons
1.Overload operation (Pipe clogging/
Covering/EEV defect/Ref. overcharge)
2. ODU fan locking
3. Heatsink assembly of INV PCB assemble
condition abnormal
4. Defect of temperature sensing circuit part
defect of INV PCB
IPM :
Measuring resistance
between No.19,20 pin
LGE Internal Use Only