Daikin RXL25G2V1B, Руководство по обслуживанию

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SiENBE04-925_A Troubleshooting
Service Diagnosis 115
4.25 Low-voltage Detection or Over-voltage Detection
Remote Control
Display
U2
Method of
Malfunction
Detection Low-voltage detection:
An abnormal voltage drop is detected by the DC voltage detection circuit.
Over-voltage detection:
An abnormal voltage rise is detected by the over-voltage detection circuit.
Malfunction
Decision
Conditions
Low-voltage detection:
„
The voltage detected by the DC voltage detection circuit is below 150 ~ 180 V (depending on
the model).
Over-voltage detection:
„
An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer.
(The voltage is over 400 V.)
„
If the error repeats, the system is shut down.
„
Reset condition: Continuous run for about 11 minutes (35 class: 5 minutes) without any
other error
Supposed
Causes
„
Supply voltage is not as specified.
„
Defective DC voltage detection circuit
„
Defective over-voltage detection circuit
„
Defective PAM control part
„
Layer short inside the fan motor winding
SIENBE04-925_A_FRONT.pdf 130 24/02/2011 13:53:57