The operation frequency does not go up from lowest frequency.
ICheck of HPS
1.Disconnect the connector CN681 in the electronic control P.C. board.
2.Check the resistance of HPS 1 minute after the outdoor unit power supply was turned OFF.
Check the resistance between each terminal.
0 Ω
Reconnect CN681.
Turn ON power supply to the indoor and outdoor unit. 3 minutes later, start EMERGENCY OPERATION.
Is HPS protection displayed immediately after compressor starts?
No
Normal
Infinity
Replace HPS.
|
| Replace the outdoor electronic |
Yes |
| control P.C. board. |
34
