Daikin REYQ8-48PY1B, Service Manual

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SiBE37-701_B Troubleshooting by Indication on the Remote Controller
Troubleshooting 266
Remote
Controller
Display
A6
Applicable
Models FXMQ50~140P
Method of
Malfunction
Detection Detection from the current flow on the fan PCB.
Detection from the RPM of the fan motor in operation.
Detection from the position signal of the fan motor.
Detection from the current flow on the fan PCB when the fan motor starting operation.
Malfunction
Decision
Conditions
„
An overcurrent flows.
„
The RPM is less than a certain level for 6 seconds.
„
A position error in the fan rotor continues for 5 seconds or more.
„
An overcurrent flows.
Supposed
Causes
„
The clogging of a foreign matter.
„
The disconnection of the fan motor connectors (X1A and X2A).
„
The disconnection of the connectors between the indoor PCB (A1P) and fan PCB (A2P).
„
A failure in fan PCB (A2P).
„
A failure in the fan motor.