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Components
Service manual
216
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
To check the wiring of the branch selector box PCB
Prerequisite:
First perform all earlier checks of the Branch selector box PCB, see
214].
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
385].
INFORMATION
Correct the wiring as needed.
Is the problem solved?
Action
Yes
No further actions required.
No
selector box PCB and continue with the
next procedure.
To check the fuse of the branch selector box PCB
Prerequisite:
First perform all earlier checks of the Branch selector box PCB, see
214].
1
Measure the continuity of the fuse. If no continuity is measured, the fuse has
blown.
BS1Q-A
a
a
Fuse
Summary of Contents for VRV IV+
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