Electronic Expansion Valve Coil Abnormality - Daikin VRV IV-S RXTQ-TAVJU Series Service Manual

Troubleshooting by Error Code

4.24 Electronic Expansion Valve Coil Abnormality

E9
Error Code
Applicable
All outdoor units
Models
Method of Error Check continuity of electronic expansion valve coil.
Detection
Error Decision No current is detected in the common (COM [+]) when power supply is ON.
Conditions
Supposed
Causes
Troubleshooting
175
Defective electronic expansion valve coil
Defective outdoor main PCB
Disconnection of connectors for electronic expansion valve
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn power supply OFF, and
turn power supply ON again.
Return to normal?
The connector of
outdoor main PCB (A1P)
for electronic expansion
valve is connected.
The resistance of
electronic expansion valve
coil is normal. (∗1)
YES
NO
NO
YES
NO
YES
SiUS331604E
External factor other than error
(for example, noise etc.).
Ensure correct connection.
Replace the electronic
expansion valve coil.
Replace the outdoor main
PCB (A1P).
Service Diagnosis