L1 Inverter Pcb Abnormality - Daikin VRVII Manual

L1
3.49
Remote Controller Display
L1
Applicable Models
VRVIII Series
Method of Error Detection
Error is detected based on the current value during
waveform output before starting compressor.
Error is detected based on the value from current sensor
during synchronous operation when starting the unit.
Error Decision Conditions
Overcurrent flows during waveform output.
Defective current sensor during synchronous operation.
IPM failure.
Supposed Causes
Inverter PCB
IPM failure
Current sensor failure
Drive circuit failure
194
Troubleshooting by Indication on the Remote Controller
Inverter PCB Abnormality