Indoor Unit Main Pcb; Checking Procedures - Daikin RXTA30B2V1B Service Manual

4.10 Indoor unit main PCB

4.10.1 Checking procedures

To perform a power check of the indoor unit main PCB
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+FTXTM30+40R2V1B+FTXTP25+35M5V1B+ATXTP25+35M5V1B
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02
10 Perform a pressure test on the piping of the indoor unit and vacuüm. Open
the stop valves when done.
11 Add refrigerant
4
procedures" [ 216].
Is the problem solved?
Yes
No
INFORMATION
It is recommended to perform the checks in the listed order.
FTXTP-M and ATXTP-M 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 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
to the refrigerant
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
Action
Return to
procedures" [
PCB and continue with the next
procedure.
Continue with the next step.
4 Components
|
circuit, see "5.2.2 Repair
4
"4.17 Plate work" [ 144].
"4.10.1 Checking
4
97] of the indoor unit
Service manual
97