Daikin RXTA30B2V1B Service Manual page 98

4 | Components
Service manual
98
3 Check the power supply to the indoor unit, see
4
procedures" [ 209].
Is the power supply to the indoor unit
correct?
Yes
No
FTXTA-B and FTXTM-R units
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
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 324 V DC.
Action
Correct the wiring between the power
supply terminal of the indoor unit and
the indoor unit PCB, see
procedures" [ 4 103].
See "To check the power supply to the
indoor unit" ("5.1.2 Repair
4
procedures" [ 210]) for the next steps.
"4.17 Plate work" [
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+FTXTM30+40R2V1B+FTXTP25+35M5V1B+ATXTP25+35M5V1B
R32 Optimized Heating 4 Split
"5.1.1 Checking
"4.10.2 Repair
4
144].
ESIE21-12A – 2022.02