E9" Outdoor Unit: Malfunction Of Moving Part Of; Electronic Expansion Valve (Y1E, Y2E) - Daikin R410As Service Manual

Troubleshooting by Indication on the Remote Controller
2.19 " E9 " Outdoor Unit:

Electronic Expansion Valve (Y1E, Y2E)

E9
Remote
Controller
Display
Applicable RXYQ5~48M
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
178
Malfunction of Moving Part of
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 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 outdoor 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
YES
NO
*
X26A only for RXYQ5M
NO
YES
Si39-302
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)
Troubleshooting