Daikin RXYQ-TA Series, Service Manual

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Troubleshooting by Error Code SiUS341615E
223 Service Diagnosis
3.33 Outdoor Fan Motor Abnormality
Error Code
E7
Applicable
Models
All outdoor unit models
Method of Error
Detection
„
Detect according to the value of current flowing through the inverter PCB (or fan PCB in case of
Fan Motor 2).
„
Detect error of the fan motor system according to the fan revolutions detected by the hall IC
during the fan motor runs.
Error Decision
Conditions
„
Overcurrent is detected from the inverter PCB or the fan PCB (Detecting overcurrent 4 times will
shut down the system).
„
The fan revolutions fall below a given level for a period of 6 seconds while in fan motor rotation
mode (Detecting shortage of revolutions will shut down the system).
Supposed
Causes
„
Fan motor failure
„
Neglect to connect or defective connection of harness/connector between the fan motor and the
PCB
„
Fan does not rotate due to foreign matter caught in it.
„
Clearing condition: fan motor performs normal operation for a period of 5 minutes