2 | Components
Service manual
75
FTXA20~50A(W)(S)(T) + FTXA20~50B(B)(S)(T) + RXA42+50A +
RXA20~35A(9) + RXA42+50B
Split Stylish R32
ESIE18-03D – 2021.05
4 Install the switch box, see "2.14Plate work"[4120].
Is the problem solved? Action
Yes No further actions required.
No Return to the troubleshooting of the
specific error and continue with the
next procedure.
2.8 Indoor unit main PCB
2.8.1 Checking procedures
INFORMATION
It is recommended to perform the checks in the listed order.
To perform a power check of the indoor unit main PCB
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "2.14Plate work"[4120].
1 Turn ON the power of the unit.
2 Measure the voltage between the pins 1‑4 of the connector S300A on the
indoor unit main PCB.
Result: The measured voltage MUST be 324VDC.
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