Indoor Unit Power Pcb; Checking Procedures - Daikin FTXA20A Service Manual

2.9 Indoor unit power PCB

2.9.1 Checking procedures

To perform a power check of the indoor unit power PCB
FTXA20~50A(W)(S)(T) + FTXA20~50B(B)(S)(T) + RXA42+50A +
RXA20~35A(9) + RXA42+50B
Split Stylish R32
ESIE18-03D – 2021.05
Is the problem solved?
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
No
3 Check the power supply to the indoor unit, see
4
procedures" [ 156].
2
|
Action
Return to "2.8.1 Checking
4
procedures" [ 75] of the indoor unit
main PCB and continue with the next
procedure.
"2.14 Plate work" [
Action
Return to "2.9.1 Checking
4
procedures" [ 81] of the indoor unit
power PCB and continue with the next
procedure.
Continue with the next step.
Components
4
120].
"3.1.1 Checking
Service manual
81