3
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Components
Service manual
214
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
3.2 Branch selector box PCB
3.2.1 Checking procedures
INFORMATION
It is recommended to perform the checks in the listed order.
To perform a power check of the branch selector box PCB
Prerequisite:
Stop the unit operation via the central controller.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
315].
1
Turn ON the power of the unit.
2
Measure the voltage on connector X1A of the branch selector box PCB. The
voltage MUST be 230 V AC±10%.
BS1Q-A
a
a
Connector X1A
BS4~16Q-A
a
a
Connector X1A
Does the Branch selector box PCB
receive power?
Action
Yes
selector box PCB and continue with the
next procedure.
No
Continue with the next step.
Summary of Contents for VRV IV+
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