L1 " Outdoor Unit: Malfunction Of Inverter Pcb - Daikin RQYQ140-180PY1 Service Manual

SiBE341001
L1
2.21 " " Outdoor Unit: Malfunction of Inverter PCB
L1
Remote
Controller
Display
Applicable RQYQ-PY1
Models RQEQ-PY1
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
Malfunction is detected based on the current value during waveform output before starting
compressor.
Malfunction is detected based on the value from current sensor during synchronous
operation when starting the unit.
Overcurrent (OCP) flows during waveform output.
Malfunction of current sensor during synchronous operation.
IPM failure.
Inverter PCB (A3P)
IPM failure
Current sensor failure
Drive circuit failure
Troubleshooting by Remote Controller
138