LG Therma V ZHBW056A0 Service Manual page 109

Display
Title
code
67 Fan Lock Error
n Error Diagnosis and Countermeasure Flow Chart
Is ODU Fan Motor Assemble
condition normal?
Yes
Is ODU Fan Motor normal?
Yes
Is wire connection of
ODU Fan Motor wire normal?
Yes
Is PCB assembly 1 normal?
Yes
Recheck power and installation condition
Check Point
1. Check voltage between 1pin and 4pin of Fan Mortor connector (Tester diode mode)
2. Voltage value should be in 1V ±0.2V.
3. Do not replacing all of fan motor and 220-240 V~ at once.
Check error code again, after replacing the abnormal part (Fan Motor or PCB) first.
Cause of error
Fan RPM is 10RPM or
less for 5 seconds when
ODU fan starts or 40
RPM or less after fan
starting.
Check ODU Fan Motor assemble condition and fan locking
No
→ Reassemble or replace if abnormality found
1. Set the multi tester to diode mode.
No
2. Check voltage between 1pin and 4pin of Fan Motor
(1 0.2V)
3. Replace PCB(Inverter) if abnormality found.
Check wiring between OUD fan motor and PCB(Inverter)
No
( Check if Hall Senor and Motor output terminal color is
matched)
→Reassemble if abnormality found
No
Replace PCB assembly 1
- 109 -
Check point & Normal condition
1. ODU fan locking
2. Heatsink assembly of PCB assembly 1 condition
abnormal
3. Defect of temperature sensing circuit part defect
of PCB(Inverter)
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