Replacing Inverter Pcb; Replacing Low Pressure Switch - Daikin R32 Sky-Air RZAG-M Service Manual

ESIE17-08 | Part 3. Repair
Installation
C
AUTION
Overheating the high pressure sensor will damage or destroy it.
1. Wrap a wet rag around the pressure sensor.
2. Proceed in reverse order.

3.3.2.14. Replacing inverter PCB

The inverter is integrated in the main PCB, see

3.3.2.15. Replacing low pressure switch

PRELIMINARY ACTIONS
1. Switch off the Daikin unit via the user interface.
2. Switch off the Daikin unit with the field supplied circuit breaker.
3. Remove plate work when required (refer to
4. Recover the refrigerant (refer to
5. Connect a nitrogen hose to the outdoor suction service port.
6. Attach a hose with core-depressor to allow the release of the nitrogen.
PROCEDURE
Removal
1. Unplug the low pressure switch connector on the main PCB.
2. Cut the tie wrap that fixes the low pressure switch wiring.
3. Cut the low pressure switch pipe.
4. Remove the low pressure switch (2).
C
AUTION
The maximum applied Nitrogen pressure must not exceed 0.02 MPa.
5. Supply nitrogen to the piping circuit.
6. Heat the low pressure switch pipe using an oxygen acetylene torch.
7. When the solder is liquid, pull the low pressure switch pipe.
8. Cut the nitrogen supply when the piping has cooled down.
Page 90
R32 Sky-Air RZAG-M
"Replacing main PCB" on page
"Basic removal" on page
"Refrigerant repair procedures" on page
3.3. Unit specific repair procedures
92.
67).
61).
15/11/18 | Version 1.1