Replacing 4-Way Valve Body - Daikin R32 Sky-Air RZAG-M Service Manual

ESIE17-08 | Part 3. Repair

3.3.2.3. Replacing 4-way valve body

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. Remove the main PCB (refer to
6. Connect a nitrogen hose to the outdoor suction service port.
7. Attach a hose with core-depressor to allow the release of the nitrogen.
PROCEDURE
Removal
1. Cut the 4-way valve pipes (1).
2. Remove the 4-way valve (2).
C
AUTION
The maximum applied Nitrogen pressure must not exceed 0.02 MPa.
3. Supply nitrogen to the piping circuit.
4. Using an oxygen acetylene torch, heat a solder connection of the 4-way valve (2).
5. When the solder material is liquid, pull the 4-way valve pipe (1).
6. Repeat steps 4 and 5 for the 3 remaining 4-way valve pipes (1).
7. Cut the nitrogen supply when the piping has cooled down.
1. 4-way valve pipe
15/11/18 | Version 1.1
R32 Sky-Air RZAG-M
"Basic removal" on page
"Refrigerant repair procedures" on page
"Replacing main PCB" on page
Figure 3-11: Removing 4-way valve body
2
1
3.3. Unit specific repair procedures
67).
61).
92).
1
2. 4-way valve
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