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Components
Service manual
150
(A)(F)TXF20~71A + FTXF20~25B + (A)(F)TXF20~42C + (A)(F)TXF20~42D +
(A)(F)TXF20~42E + (A)RXF20~71A + RXF20~60B + (A)RXF20~42C +
(A)RXF20~42D + (A)RXF20~42E
Split Sensira R32
ESIE18-12G – 2023.01
a
a
Wifi control PCB assembly
Is the measured power supply voltage
correct?
Action
Yes
Skip the next step..
No
Continue with the next step.
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?
Action
Yes
Replace the wifi control PCB wiring
harness, see
No
Perform a check of the indoor unit main
PCB, see
84].
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
After complete check of the indoor unit
main PCB, is the problem solved?
Action
Yes
No further actions required.
No
Replace the wifi control PCB, see
3.14.2 Repair procedures
To remove the wifi control PCB
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
124].
1
Disconnect the connector from the wifi control PCB.
2
Carefully click the complete wifi control PCB assembly out of the indoor unit.