Daikin Emura RXJ20A5V1B Service Manual page 84

4 | Components
Service manual
84
INFORMATION
Below are shown examples of the resistance measurements in which the common
wire is connected to pin 5 or to pin 6 of the expansion valve coil connector.
Connections may differ according to the type of expansion valve.
▪ Connector pin 1‑5,
▪ Connector pin 2‑5,
▪ Connector pin 3‑5,
▪ Connector pin 4‑5.
a
1 2 3 4 5
a Connector
▪ Connector pin 1‑6,
▪ Connector pin 2‑6,
▪ Connector pin 3‑6,
▪ Connector pin 4‑6.
a
a Connector
3 Check the insulation resistance of the coil by measuring the resistance
between the pins of each phase (1, 2, 3, 4) and GND on the unit.
Result: None of the measurements should be short‑circuit.
WARNING
When reconnecting a connector to the PCB, make sure to connect it on the correct
location and do NOT apply force, as this may damage the connector or connector
pins of the PCB.
Is the measured resistance correct?
Yes
No
1
5
3
2
Action
Perform an operation check of the
expansion valve, see
procedures" [
Replace the expansion valve coil,
"4.4.2 Repair
4
"4.4.1 Checking
4
82].
4
procedures" [ 86].
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04B – 2022.08