Repair Procedures - Daikin Sky Air Advance RZA200D7Y1B Service Manual

3 | Components
To perform an operation check of the solenoid valve
Problem solved?

3.14.2 Repair procedures

To remove the solenoid valve coil
Service manual
124
Are the measured voltages correct?
Yes
No
Prerequisite: First perform an electrical check of the solenoid valve, see
"3.14.1 Checking procedures" [
1 Connect the service monitoring tool to the unit and check if the specific
solenoid valve is activated or NOT.
INFORMATION
The solenoid valve is used for pressure equalization before start‑up control. The
solenoid valve is activated (ON) for some time before the compressor starts (after
the power reset) and is de‑activated (OFF) shortly after the compressor starts.
2 Check the position of the specific solenoid valve. The solenoid valve MUST be:
▪ In closed position (NOT energized) when NOT activated
▪ In open position (energized) when activated
3 If the solenoid valve is closed, check the valve inlet and outlet for any leaks.
Replace the valve body if any leaks are found, see
4
procedures" [ 124].
4 If the solenoid valve is open, check with a contact thermometer (or by
touching) if refrigerant flows through the solenoid valve.
5 Wait for the activation or deactivation of the specific solenoid valve and again
perform the above checks.
Is the solenoid valve operating
correctly?
Yes
No
After all checking procedures listed above have been performed:
Is the problem solved?
Yes
No
Prerequisite: Stop the unit operation via the user interface.
Action
Perform a position check of the
solenoid valve, see
procedures" [
Perform a check of the main PCB, see
"3.9 Main PCB" [
4
122].
Action
Component is OK. Return to the
troubleshooting of the specific error
and continue with the next step.
Replace the solenoid valve body, see
"3.14.2 Repair
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
"3.14.1 Checking
4
122].
4
95].
"3.14.2 Repair
4
procedures" [ 124].
RZA200+250D7Y1B
Sky Air Advance-series
ESIE19-13A – 2020.05