Daikin VRV IV+ Service Manual page 294

3 | Components
To install the main PCB
Service manual
294
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see
a Cable clamp
2 Unlatch the cable clamp at the top right corner of the main PCB to facilitate
the removal of the PCB.
c
a
c
a
a
c
a Connector
b Wire terminal
c PCB support
3 Disconnect all connectors from the main PCB assembly.
4 Note the field wiring on X1M transmission field wiring terminals.
5 Disconnect wiring connections on wiring terminals.
6 Carefully pull the PCB at the side and unlatch the PCB supports one by one
using a small pair of pliers.
7 Remove the main PCB.
8 To install the new outdoor unit main PCB, see
4
procedures" [ 293].
1 Install the main PCB on its correct location.
2 Latch the PCB supports to fix the PCB.
"3.15 Plate
a c a
a c b
4
work" [ 315].
a
c
a
a
c
a
c
"3.11.2 Repair
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05