92
Troubleshooting 18,000 & 24,000 Units
Compressor Overload, Discharge Protection Malfunction
1. Check the resistance of the compressor terminals and connections to the compressor
2. Check for overcharge of refrigerant
3. Check for correct voltage
4.
Check for dirty coils and filters
Is the Overload connections OK
Replace the overload
protector
Yes
No
No
Reconnect according to the
wring diagram
No
Yes
Is the wiring of the
electronic expansion valve
connected well
Check the coil of the electronic expansion
valve per instructions in this manual.
Replace if faulty
Eliminate the malfunction
Check the refrigerant status, if there is leakage,
recharge according to this service manual.
End Troubleshooting
Yes
No
Yes
No
Check the resistance between the
two ends of the overload protector in
ambient temperature. Is the resistance
below 1K
Eliminate the malfunction
Yes
Replace outdoor main
board
Start
