Indoor Unit Main Pcb; Checking Procedures - Daikin Sensira Series Service Manual

2.6 Indoor unit main PCB

2.6.1 Checking procedures

To perform a power check of the indoor unit main PCB
FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
Split Sensira R32
ESIE18-12E – 2021.02
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 on the PCB. The
measured voltage MUST be 230 V AC.
b
a
a Black wire
b White wire
Is the measured voltage on the indoor
unit PCB correct?
Yes
No
3 Check the power supply to the indoor unit, see
procedures" [ 4 127].
2
|
Action
Return to the troubleshooting of the
specific error and continue with the
next procedure.
"2.10 Plate work" [
Action
Return to "2.6.1 Checking
4
procedures" [ 67] of the indoor unit
PCB and continue with the next
procedure.
Continue with the next step.
Components
4
101].
"3.1.1 Checking
Service manual
67