Electronic Expansion Valve Check - Daikin FTXM-V Series Service Manual

Check
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.
136
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 5P Connector
Check
1 2 3 4 5
5 - 1
5 - 2
5 - 3
S20
5 - 4
1 2 3 4 5 6
(R23663)
SiUS042113E
Harness 5P
6 - 1
(5)
6 - 2
Check
6P Connector
6 - 3
6 - 4
(R23593)
Part 6 Service Diagnosis