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Heat sink Temp,
62
High error
n Error Diagnosis and Countermeasure Flow Chart
Is it good Screw Torque of
IPM, PFCM ?
Yes
Is it normal Resistor between
22 and 23 Pin of IPM, PFCM
Is it normal thermal grease of
IPM, PFCM ?
Is it normal IPM, PFCM?
Yes
Recheck Power and installation condition
Check Point
1. Check resistance between No.19 pin and NO.20 pin of PCB PFC module
2. Resistance value should be in 7kΩ ±10%.(at 25°C).
Cause of error
Heatsink sensor detected
high temp.(85℃)
No
Be tighten the screw of IPM, PFCM
No
Change the Inverter PCB
<Check the PFCM>
- 108 -
Check point & Normal condition
1. Part no. : EBR37798101~09
- Check the heatsink sensor
: 10kΩ/at 25℃(Unplugged)
- Check the outdoor fan is driving rightly
2. Part no. : EBR37798112~21
- Check the soldered condition in the 22,23 pin of
IPM, PFCM
- Check the screw torque of IPM, PFCM
- Check the spreadable condition of thermal
grease on IPM, PFCM
- Check the outdoor fan is driving rightly
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Troubleshooting
