Daikin VRV IV+ Service Manual page 299

To check the wiring of the noise filter PCB
To perform an electrical check of the noise filter PCB
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
1 Visit your local spare parts webbank.
2 Enter the model name of your unit and check if the installed spare part
number corresponds with the spare part number indicated in the webbank.
Is the correct spare part for the noise
filter PCB installed?
Yes
No
Prerequisite: First perform all earlier checks of the noise filter PCB, see
"3.12.1 Checking procedures" [
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 check the power supply to the noise filter PCB, see
"3.12.1 Checking procedures" [
1 Measure the voltage between the following output wires of the noise filter
PCB on the location shown below. All measurements MUST be 400 V AC.
▪ L1B–L2B
▪ L1B–L3B
▪ L2B–L3B
Action
Return to "3.12.1 Checking
procedures" [
PCB and continue with the next
procedure.
Replace the noise filter PCB, see
"3.12.2 Repair
4
298].
Action
No further actions required.
Return to "3.12.1 Checking
procedures" [
PCB and continue with the next
procedure.
4
298].
3 Components
|
4
298] of the noise filter
4
procedures" [ 301].
"6.2 Wiring
4
298] of the noise filter
Service manual
299