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Störungscode H03_H13_H23_ECOi_MF1

(ECOi-Geräte)

 

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

Compressor 1: Current value of more than 18.0 A is detected while the compressor 1 is stopped.

Compressor 2 & 3: Current value at compressor 2 and 3 is less than 2.0 A when 2 seconds or more had passed after the compressors began operation and output.

* No current is detected even though the compressors are operating. 

Probable cause
  1. CT circuit failure (including cut wiring, etc.)
  2. Disconnected CT circuit connector
  3. Missing phase where CT circuit is connected
  4. This CT circuit is connected to the connector of the other CT circuit.
  5. PCB failure
  6. Electrical noise
Check

1. CT circuit failure, PCB failure

Trouble:
• Current value during compressor operation is below the threshold value.

Check:
• Check that the connector is not disconnected.
• Check the continuity of the CT circuit.
• Install a normal CT in place of this CT and check. If current is detected, then the PCB   can be judged OK.
  → CT circuit failure
• Check that current is flowing in the phase where the CT circuit is connected.        
  → Check voltage and current.

2. Crossed wiring or installation error

Trouble:
When the compressor is stopped, the current value at the other compressor is high.
☆ When this type of condition occurs, seizing-detection control takes priority.

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.

Correction
  1. Replace the CT circuit.
  2. Replace the outdoor unit PCB.
  3. Correct the problem.
Example
  1. The connector was not inserted after the PCB was replaced.
Notes Use a normal CT as a tool to determine whether the trouble is a PCB failure or CT failure.

 

 


 

 

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