Daikin VRV IV+ Service Manual page 215

To check the HAP LED of the branch selector box PCB
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
3 Check the power supply to the unit, see
Does the Unit receive power?
Yes
No
Prerequisite: First perform a power check of the Branch selector box PCB, see
"3.2.1 Checking procedures" [
1 Locate the HAP LED on the Branch selector box PCB.
BS1Q-A
a
a HAP LED
BS4~16Q-A
a HAP LED
Does the HAP LED blink in regular
intervals (approximately 1 Hz)?
Yes
No
"4.1.1 Checking
Action
Correct the wiring from the main power
supply terminal to the Branch selector
box PCB, see
procedures" [
Adjust the power supply to the unit, see
"4.1.2 Repair
4
214].
a
Action
Return to "3.2.1 Checking
procedures" [
selector box PCB and continue with the
next procedure.
Replace the Branch selector box PCB,
see "3.2.2 Repair
3 Components
|
4
procedures" [ 356].
"4.1.2 Repair
4
361].
4
procedures" [ 361].
4
214] of the Branch
4
procedures" [ 217].
Service manual
215