Daikin VRV IV+ Service Manual page 346

3 | Components
To remove the Sub PCB
To install the Sub PCB
Service manual
346
Is the problem solved?
No
Prerequisite: Stop the unit operation via the central controller.
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see
rectifier voltage" [
2 Locate the Sub PCB.
3 Disconnect all connectors from the Sub PCB.
4 Carefully pull the Sub PCB at the side and unlatch the PCB supports one by
one using a small pair of pliers.
a
a
a PCB support
5 Remove the Sub PCB from the unit.
6 To install the Sub PCB, see
1 Install the Sub PCB on its correct location.
2 Latch the PCB supports to fix the Sub PCB.
a
a
a PCB support
3 Connect all connectors to the Sub PCB.
Is the problem solved?
Yes
No
Action
Return to
procedures" [
continue with the next procedure.
"3.15 Plate
4
356].
a
a
"3.20.2 Repair procedures" [
a
a
Action
No further actions required.
Return to
procedures" [
continue with the next procedure.
"3.20.1 Checking
4
342] of the Sub PCB and
4
work" [ 315].
"To check the
a
a
4
345].
a
a
"3.20.1 Checking
4
342] of the Sub PCB and
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05