Wifi Control Pcb; Checking Procedures - Daikin Emura RXJ20A5V1B Service Manual

4 | Components

4.20 Wifi control PCB

4.20.1 Checking procedures

To perform a power check of the wifi control PCB
Service manual
176
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.
5 Fix the thermistor harness using new tie straps
6 Install the insulation around the thermistor.
7 Fix the insulation and the thermistor wire using new tie straps.
Is the problem solved?
Yes
No
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see
2 Turn ON the power of the unit.
3 Measure the power supply voltage between the pins 4‑5 on the wifi control
PCB connector.
Result: The measured voltage MUST be 10~16 V DC.
a Wifi control PCB assembly
Is the measured power supply voltage
correct?
Yes
No
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
"4.14 Plate
a
Action
Skip the next step..
Continue with the next step.
4
work" [ 144].
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04B – 2022.08