Daikin VRV IV+ Service Manual page 214

3 | Components
3.2 Branch selector box PCB
3.2.1 Checking procedures
To perform a power check of the branch selector box PCB
Service manual
214
INFORMATION
It is recommended to perform the checks in the listed order.
Prerequisite: Stop the unit operation via the central controller.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
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 Connector X1A
BS4~16Q-A
a
a Connector X1A
Does the Branch selector box PCB
receive power?
Yes
No
"3.15 Plate work" [
a
Action
Return to "3.2.1 Checking
4
procedures" [ 214] of the branch
selector box PCB and continue with the
next procedure.
Continue with the next step.
4
315].
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05