Indoor Unit Power Pcb; Checking Procedures - Daikin Emura RXJ20A5V1B Service Manual

4 | Components

4.10 Indoor unit power PCB

4.10.1 Checking procedures

To perform a power check of the indoor unit power PCB
Service manual
108
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.
Is the problem solved?
Yes
No
INFORMATION
It is recommended to perform the checks in the listed order.
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 black and white wires of connector S101 on
the indoor unit power PCB.
Result: The measured voltage MUST be 230 V AC.
a b
a Black wire
b White wire
Is the measured voltage on the indoor
unit power PCB correct?
Yes
Action
No further actions required.
Return to "4.9.1 Checking
4
procedures" [ 103] of the indoor unit
main PCB and continue with the next
procedure.
"4.14 Plate work" [
Action
Return to "4.10.1 Checking
4
procedures" [ 108] of the indoor unit
power PCB and continue with the next
procedure.
RXJ20~50A + FTXJ-A(W)(S)(B)
4
144].
Split Emura 3 R32
ESIE22-04B – 2022.08