E9 Electronic Expansion Valve Abnormality - Daikin R71FUV1 Service Manual

Si20-701_B
E9
3.35
Abnormality
Remote Controller Display
E9
Applicable Models
RY-F, R(Y)-G/GA/KU/LU
Method of Error Detection
With electronic expansion valve error detection, coil
current is detected and open and short circuits are
detected.
Error Decision Conditions
The error is determined by the following condition.
[For R(Y)-LU]
There is no common power supply when the power is
ON.
[For RY-F, R(Y)-G/GA/KU]
Coil current: open circuit < normal < short circuit
Supposed Causes
Defective electronic expansion valve
Electronic expansion valve's harness is broken or
disconnected.
Defective electronic expansion valve's connector
connection
Defective outdoor unit PCB
External factor (Noise, etc.)
196
Electronic Expansion Valve
Troubleshooting by Remote Controller