|Alarm Code||H03, H13, H23|
|Alarm meaning||Compressor 1 CT sensor disconnected or short-circuit; Compressor 2 CT sensor disconnected or short-circuit; Compressor 3 CT sensor disconnected or short-circuit|
|Alarm conditions||Current value at compressor 1 was 18 A or less, and at compressors 2 and 3 was 2 A or less when 2 seconds or more had passed after the compressor began operation and output.
* No current is detected even though the compressor is operating.
1. CT circuit failure, PCB failure
Trouble: Current value during compressor operation is below the threshold value.
2. Crossed wiring or installation error
Trouble: When the compressor is stopped, the current value at the other compressor is high.
3. If the cause is still unknown after checking the above, then it is possible that noise is the cause of the trouble. It is necessary to connect a PC or other instrument.
|Notes||Use a normal CT as a tool to determine whether the trouble is a PCB failure or CT failure.|