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

2.8 Indoor unit main PCB

2.8.1 Checking procedures

To perform a power check of the indoor unit main 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
4 Install the switch box, see
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 pins 1‑4 of the connector S300A on the
indoor unit main PCB.
Result: The measured voltage MUST be 324 V DC.
4
"2.14 Plate work" [ 120].
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
"2.14 Plate
2 Components
|
4
work" [ 120].
Service manual
75