Repair Procedures - Daikin VRV IV+ Service Manual

3 Components
Problem solved?
After all checking procedures listed above have been performed:
Is the problem solved?
Yes
No
3.9.2

Repair procedures

To correct the wiring from the main power supply
terminal to the main PCB
1 Correct the wiring from the main power supply terminal to the
PCB, see "6.2 Wiring diagram" on
Is the problem solved?
Yes
No
To remove the main PCB
Prerequisite: Stop the unit operation (via the user interface, central
controller, operation switch, ...).
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see
page 118.
a Cable clamp
2 Unlatch the cable clamp at the top right corner of the main PCB
to facilitate the removal of the PCB.
Service manual
108
https://daikin-p.ru/catalog/vrv-daikn/naruzhnye-vrv-bloki-daikin
Action
No further actions required.
Return to the troubleshooting of
the specific error and continue
with the next procedure.
page 146.
Action
No further actions required.
Return to "3.9.1 Checking
procedures" on page 106 of the
main PCB and continue with the
next procedure.
"3.13 Plate work" on
a
c a
a
c
a
a
c a
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
procedures" on page 108.
To install the main PCB
1 Install the main PCB on its correct location.
2 Latch the PCB supports using a small pair of pliers to fix the
PCB.
c a
a
c
a
a
c a
a Connector
b Wire terminal
c PCB support
3 Connect all connectors to the main PCB assembly.
c a c
a
a
c
a
c b c
"3.9.2 Repair
c a
c
a
a
c
a
c b c
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07