Replacing Main Pcb - Daikin SA R32 Sky-Air RZAG-L Service Manual

ESIE16-03B | Part 3. Repair

3.3.2.16. Replacing main PCB

Removal
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. Flip over the protection sheet (1).
5. Remove the power and remote control wiring from the terminal block (2).
6. Cut the 5 tie wraps (3).
W : R
ARNING
When reconnecting a connector to the PCB, do not apply force, as this may damage the connector or connector pins of
the PCB.
7. Unplug all connectors (4) from the main PCB (5).
8. Remove the 4-way valve coil (6) from the 4-way valve (refer to
9. Remove the wiring from the cable clamp (9).
10. Remove the 3 screws (8) that fix the heat sink with a ring spanner or a wrench/socket.
C
AUTION
Due to the large size of the PCB it is sensitive to bending.
Only use a wrench/socket or a ring spanner to loosen or fasten the heat sink screws.
Do not use a screwdriver.
11. Remove the 4 screws (7) that fix the main PCB support to the Daikin unit.
12. Lift and turn the lid (10) to the left.
C
AUTION
Do not remove the main PCB assembly yet, it is still attached by wiring.
13. Lift the main PCB (5) to release it from the unit.
C
AUTION
Tilting the main PCB stresses the heat pipe, doe not tilt more than 15°.
14. Slightly tilt (max. 15°) the main PCB (5) and disconnect 2 connectors at the rear of the main PCB panel.
15. Guide the wiring (11) through the slots.
22/08/16 | Version 1.1
SA R32 Sky-Air RZAG-L
"Basic removal" on page
F
ISK OF IRE
3.3. Unit specific repair procedures
67).
"Replacing 4-way valve coil" on page 75).
Page 89