Daikin RXTA30B2V1B Service Manual page 110

4 | Components
To perform an electrical check of the indoor unit power PCB
Service manual
110
Is the measured voltage on the indoor
unit power PCB correct?
Yes
No
3 Check the power supply to the indoor unit, see
4
procedures" [ 209].
Is the power supply to the indoor unit
correct?
Yes
No
Prerequisite: First perform a power check of the indoor unit power PCB, see
"4.11.1 Checking procedures" [
1 Measure the voltage between the pins 1‑4 of the connector S102.
Result: The measured voltage MUST be 324 VDC.
A
A Indoor unit FTXTA-B
a Connector S102
Action
Return to "4.11.1 Checking
procedures" [
power PCB and continue with the next
procedure.
Continue with the next step.
Action
Correct the wiring between the power
supply terminal of the indoor unit and
the indoor unit power PCB, see
"4.11.2 Repair
See "To check the power supply to the
indoor unit"
procedures" [
4
109].
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+FTXTM30+40R2V1B+FTXTP25+35M5V1B+ATXTP25+35M5V1B
4
109] of the indoor unit
"5.1.1 Checking
4
procedures" [ 113].
("5.1.2 Repair
4
210]) for the next steps.
a
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02