Repair Procedures - Daikin Emura RXJ20A5V1B Service Manual

4.20.2 Repair procedures

To remove the wifi control PCB
To install the wifi control PCB
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04B – 2022.08
4 Measure the output voltage between between the pins 4‑5 on the connector
S801 on the indoor unit main PCB.
Result: The measured voltage MUST be 10~16 V DC.
Is the output voltage on the indoor unit
main PCB correct?
Yes
No
5 As there are no further check procedures for this component, perform a check
of the indoor unit main PCB to check if the wifi control PCB needs to be
replaced. See "4.9.1 Checking
After complete check of the indoor unit
main PCB, is the problem solved?
Yes
No
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
1 Disconnect the connector from the wifi control PCB.
2 Carefully click the complete wifi control PCB assembly out of the indoor unit.
a Wifi control PCB assembly
3 To install the
4
procedures" [ 177].
1 Click the wifi control PCB assembly on the indoor unit.
Action
Replace the wifi control PCB wiring
harness, see
procedures" [
Perform a check of the indoor unit main
PCB, see
procedures" [
procedures" [
Action
No further actions required.
Replace the wifi control PCB, see
"4.20.2 Repair
a
wifi control PCB
4 Components
|
"4.20.2 Repair
4
177].
"4.9.1 Checking
4
103].
4
103].
4
procedures" [
4
"4.14 Plate work" [
assembly, see "4.20.2 Repair
177].
144].
Service manual
177