SiUS30-604 Troubleshooting by Indication on the Remote Controller
Troubleshooting 179
2.17 “E9” Outside Unit: Malfunction of Moving Part of Electronic
Expansion Valve (Y1E, Y3E)
Remote
Controller
Display
E9
Applicable
Models
RWEYQ60, 72, 84MTJU
Method of
Malfunction
Detection
Check disconnection of connector
Check continuity of expansion valve coil
Malfunction
Decision
Conditions
Error is generated under no common power supply when the power is on.
Supposed
Causes
Defect of moving part of electronic expansion valve
Defect of outside unit PC board (A1P)
Defect of connecting cable
Troubleshooting
(V3067)
YES
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Return to normal?
Turn power supply off, and
turn power supply on again.
Electronic
expansion valve is
connected to X26A and
X28A of outside unit
PC board
(A1P).
Normal
when coil
check (∗1) of the moving
part of the electronic
expansion valve is
checked.
The connecting
cable is short-circuited or
disconnected.
Replace the connecting cable.
Replace outside unit PC board
A1P.
NO
NO
NO
NO
Replace the moving part of the
electronic expansion valve.
External factor other than
malfunction (for example, noise
etc.).
After connecting, turn the power
off and then back on again.
YES
YES
YES
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