Electronic Expansion Valve Coil (Y1E~Y5E) Abnormality - Daikin VRV-WIII RWEYQ72PTJU Service Manual

Troubleshooting by Indication on the Remote Controller

3.22 Electronic Expansion Valve Coil (Y1E~Y5E) Abnormality

E9
Error Code
Applicable RWEYQ72P, 84P
Models
Method of Error
Check disconnection of connector
Detection To be detected based on continuity existence of electronic expansion valve coil
Error Decision
No current is detected in the common (COM [+]) when power supply is ON.
Conditions
 Disconnection of connectors for electronic expansion valve
Supposed
 Defective electronic expansion valve coil
Causes
 Defective condensing unit main PCB (A1P)
Troubleshooting
188
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Turn OFF the power supply once
and then turn it ON again.
Return to normal?
Check the electronic expansion valve corresponding to the error code "
When confirmation of error 3 shows as follows:
® Electronic expansion valve for main (Y1E)
When confirmation of error 3 shows as follows:
® Electronic expansion valve for subcooling (Y3E)
Explanation of " "
The
connector of
condensing unit PCB
(A1P) for electronic
expansion valve is
connected.
The coil
resistance of
electronic expansion valve
is normal.(*1)
YES
NO
Master unit
Slave unit 1
Slave unit 2
System
NO
YES
NO
YES
SiUS30-1301
External factor (Noise, etc.)
E9
" in the monitor mode.
Ensure correct connection.
Replace the electronic
expansion valve coil.
Replace the condensing unit
PCB (A1P).
Service Diagnosis