Daikin VRV IV+ Service Manual page 343

To check the HAP LED of the Sub PCB
To check if the correct spare part is installed
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
2 Measure the voltage on connector X1A of the Sub PCB. The voltage MUST be
230 V AC±10%.
a
a Connector X1A
Does the Sub PCB receive power?
Yes
No
3 Check the power supply to the unit, see
Does the Unit receive power?
Yes
No
Prerequisite: First perform a power check of the Sub PCB, see
4
procedures" [ 342].
1 Locate the HAP LED on the Sub PCB.
a HAP LED
Does the HAP LED blink in regular
intervals (approximately 1 Hz)?
Yes
No
Prerequisite: First perform all earlier checks of the Sub PCB, see
4
procedures" [ 342].
1 Visit your local spare parts webbank.
3
|
Action
Return to "3.20.1 Checking
4
procedures" [ 342] of the sub PCB and
continue with the next procedure.
Continue with the next step.
"4.1.1 Checking procedures" [
Action
Correct the wiring from the main power
supply terminal to the Sub PCB, see
"3.20.2 Repair procedures" [
Adjust the power supply to the unit, see
"4.1.2 Repair procedures" [
a
Action
Return to "3.20.1 Checking
4
procedures" [ 342] of the Sub PCB and
continue with the next procedure.
Replace the Sub PCB, see
4
procedures" [ 345].
Components
4
356].
4
345].
4
361].
"3.20.1 Checking
"3.20.2 Repair
"3.20.1 Checking
Service manual
343