Daikin R71FUV1 Service Manual page 313

Si20-701_B
Remote Controller Display
L8
Applicable Models
RZQ-K/H, RZQ(S)-B/C, 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 (except for when startup) is
detected.
Supposed Causes
Compressor overload (during operation)
Disconnected compressor coil
Defective inverter
Defective compressor (if bearing is scratched)
Defective outdoor unit PCB
306
Troubleshooting by Remote Controller