Daikin R71FUV1 Service Manual page 321

Si20-701_B
Remote Controller Display
L9
Applicable Models
RZQ-K/H, RZQ(S)-B/C, RZQG, RZR-KU/HU
Method of Error Detection
The error is detected from the current flowing to power
transistor into voltage with CT1 (DC current sensor).
Inverter PCB detects the disorder of position signal.
Error Decision Conditions
When compressor overload and change of load on is
detected
When position signal is disordered.
Supposed Causes
The stop valve is not opened
Pressure differential startup
Defective outdoor unit inverter PCB
Defective compressor (lock)
314
Troubleshooting by Remote Controller