Daikin VRV II REYQ8MY1B, Руководство по обслуживанию

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Troubleshooting by Indication on the Remote Controller Si39-306
170 Troubleshooting
2.19
“
E9
”
Outdoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (Y1E, Y2E, Y3E)
Remote
Controller
Display
E9
Applicable
Models REYQ8~48M
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 outdoor 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 to
X28A of outdoor 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 outdoor 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