Daikin ERSQ 011AAV1, Service Manual

Page: 169 / 262

ESIE09-08 Troubleshooting by Indication on the Remote Controller
Troubleshooting 157
3.20
“E9”
Outdoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve
Remote Control
Display
E9
Applicable
Models
ER*Q 011~016*
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 connecting or disconnecting connector,
otherwise parts may be damaged.
Return to normal?
Turn power supply off, and
turn power supply on again.
Electronic
expansion valve is
connected to X21A and X22A
of outdoor unit PC
board (A1P)
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