Fan Inverter Pcb; Checking Procedures - Daikin Sky Air Advance RZA200D7Y1B Service Manual

3 | Components

3.5 Fan inverter PCB

3.5.1 Checking procedures

To perform a power check of the fan inverter PCB
Service manual
74
WARNING
When reconnecting a connector to the PCB, do NOT apply force, as this may damage
the connector or connector pins of the PCB.
4 Fix the expansion valve motor harness using new tie straps.
5 Install the insulation cap on the expansion valve motor (if applicable).
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
Prerequisite: Access the back side of the switch box, see
1 Turn ON the power of the unit.
2 Measure the voltage between pins 1 and 3 of connector X5A The measured
voltage MUST be 18 V DC.
a Pin 1
b Pin 3
Is the measured voltage on the PCB
correct?
Yes
No
3 Measure the output voltage voltage on connector X601A on the inverter PCB.
Result: The measured voltage MUST be 18 V DC.
Action
No further actions required.
Return to
procedures" [
valve and continue with the next
procedure.
"3.12 Plate
b a
Action
Return to
procedures" [
continue with the next procedure.
Continue with the next step.
"3.4.1 Checking
4
68] of the expansion
4
work" [ 111].
4
"3.12 Plate work" [
"3.5.1 Checking
4
74] of the PCB and
RZA200+250D7Y1B
Sky Air Advance-series
ESIE19-13A – 2020.05
111].