Electronic Expansion Valve Check - Daikin FFQ09Q2VJUFFQ12Q2VJUFFQ15Q2VJUFFQ18Q2VJURX09QMVJURX12QMVJURX15QMVJURX18QMVJU Service Manual

SiUS091628EA
5.4

Electronic Expansion Valve Check

Check No.12 Conduct the following to check the electronic expansion valve (EV).
1. Check if the EV connector is correctly connected to the PCB.
2. Turn the power off and on again, and check if the EV generates a latching sound.
3. If the EV does not generate a latching sound in step 2, disconnect the connector and check the
4. Check the continuity between the pins 5 - 1, 5 - 2, 5 - 3, 5 - 4 (between the pins 6 - 1, 6 - 2, 6 - 3,
5. If the continuity is confirmed in step 3, the outdoor unit PCB (main PCB) is faulty.
Service Diagnosis
continuity using a multimeter.
and 6 - 4 for the 6P connector models). If there is no continuity between the pins, the EV coil is
faulty.
Harness 5P
S20 Check
5P Connector
1 2 3 4 5
5 - 1
5 - 2
5 - 3
S20
5 - 4
(R23663)
Harness 5P
6 - 1
(5)
6 - 2
Check
6P Connector
6 - 3
6 - 4
1 2 3 4 5 6
(R23593)
Check
102