E9" Outside Unit; Electronic Expansion Valve (Y1E, Y3E) - Daikin VRV - WII Service Manual

SiUS30-604

2.17 "E9" Outside Unit:

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