Daikin VRV IV+ Service Manual page 221

3.3 Compressor
3.3.1 Checking procedures
To perform an auditive check of the compressor
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
BS1Q-A
a Fuse
BS4~16Q-A
a
a Fuse
Is the problem solved?
Yes
No
INFORMATION
It is recommended to perform the checks in the listed order.
Prerequisite: First perform a power transistor check of the inverter PCB, see
4
"3.10 Inverter PCB" [ 274]. If power transistor is OK, proceed as follows:
Prerequisite: Stop the unit operation via the central controller.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
3
a
Action
No further actions required.
Return to "3.2.1 Checking
4
procedures" [ 214] of the Branch
selector box PCB and continue with the
next procedure.
"3.15 Plate work" [
Components
|
4 315].
Service manual
221