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