Daikin VRV IV+ Service Manual page 261

To check the wiring of the fan inverter PCB
To check the fuse of the fan inverter PCB
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
Is the correct spare part for the fan
inverter PCB installed?
No
Prerequisite: First perform all earlier checks of the fan inverter PCB, see
4
procedures" [ 259].
Prerequisite: Stop the unit operation via the central controller.
Prerequisite: Turn OFF the respective circuit breaker.
1 Check that all wires are properly connected and that all connectors are fully
plugged‑in.
2 Check that no connectors or wires are damaged.
3 Check that the wiring corresponds with the wiring diagram, see
4
diagram" [ 385].
INFORMATION
Correct the wiring as needed.
Is the problem solved?
Yes
No
Prerequisite: First perform all earlier checks of the fan inverter PCB, see
4
procedures" [ 259].
1 Measure the continuity of the fuse. If no continuity is measured, the fuse has
blown.
a Fuse
Blown fuse on the fan inverter PCB?
Yes
3
Action
Replace the fan inverter PCB, see
4
"Repair procedures" [
Action
No further actions required.
Return to "Checking
4
procedures" [ 259] of the fan inverter
PCB and continue with the next
procedure.
a
Action
Replace the fan inverter PCB, see
"Repair procedures" [ 4
Components
|
263].
"Checking
"6.2 Wiring
"Checking
263].
Service manual
261