Daikin R71FUV1 Service Manual page 205

Si20-701_B
Remote Controller Display
E9
Applicable Models
RZ(Y), RZQ-C
Method of Error Detection
For RZ(Y)
The error detection function detects coil current to
determine open circuit and short circuit.
For RZQ-C
Check disconnection of connector
Check continuity of electronic expansion valve coil
Error Decision Conditions
For RZ(Y)
Error is generated under the following condition.
Coil current:
Open circuit < Normal < Short circuit
For RZQ-C
Error is generated under no common power supply when
the power is ON.
Supposed Causes
Defective electronic expansion valve
Open circuit in electronic expansion valve harness
Defective connection of electronic expansion valve
connector
Defective outdoor unit PCB
External factor (Noise, etc.)
198
Troubleshooting by Remote Controller