E9" Outdoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve - Daikin ERSQ 011AAV1 Service Manual

ESIE09-08
3.20 "E9 " Outdoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve
E9
Remote Control
Display
Applicable
ER*Q 011~016*
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
Defect of moving part of electronic expansion valve
Defect of outdoor unit PC board (A1P)
Defect of connecting cable
Be sure to turn off power switch before connecting or disconnecting connector,
otherwise parts may be damaged.
Caution
Turn power supply off, and
turn power supply on again.
Return to normal?
NO
Electronic
expansion valve is
connected to X21A and X22A
of outdoor unit PC
board (A1P)
YES
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 outdoor unit PC board
(A1P).
(V3067)
157