A9" Malfunction Of Moving Part Of; Electronic Expansion Valve (Y1E) - Daikin VRV III-S RXYMQ36 48PVJU Service Manual

SiUS34-907
A9
3.6 " " Malfunction of Moving Part of Electronic Expansion
Valve (Y1E)
A9
Remote
Controller
Display
Applicable
All indoor unit models
Models
Method of Check coil condition of electronic expansion valve by using micro-computer
Malfunction
Detection
Malfunction
Pin input for electronic expansion valve coil is abnormal when initializing micro-computer.
Decision
Conditions
 Malfunction of moving part of electronic expansion valve
Supposed
 Defect of indoor unit PCB
Causes
 Defect of connecting cable
Troubleshooting
Caution Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
connected to X7A of the
(*1) of the moving part of
the electronic expansion
cable is short circuited or
Troubleshooting
The
electronic
NO
expansion valve is
indoor unit
PCB.
YES
Normal
when coil check
NO
valve is
checked.
YES
The connecting
YES
disconnected.
NO
Troubleshooting by Indication on the Remote Controller
After connecting, turn the power
supply off and then back on.
Replace the moving part of the
electronic expansion valve.
Replace the connecting cable.
If you turn the power supply off
and turn on again, and it still
does not help, replace the
indoor unit PCB.
121