Daikin EBLA04E V Series Service Manual page 186

4 | Components
To check the HAP LED of the main PCB
Service manual
186
draft – 31/05/2022 15:53
Is the measured voltage on the power
supply terminal correct?
Yes
No
6 Check the power supply to the unit, see
Does the unit receive power?
Yes
No
Prerequisite: First check the power supply to the main PCB, see
procedures" [ 4 184].
1 Locate the HAP LED on the main PCB.
a HAP LED
INFORMATION
Make sure the correct software is available on the PCB. If NOT, update using the
updater tool.
Does the HAP LED blink in regular
intervals (1 second ON/1 second OFF)?
Yes
No
Action
Replace the main PCB, see
"4.14.2 Repair procedures" [
Continue with the next step.
"5.1.1 Checking procedures" [
Action
Correct the wiring from the main power
supply terminal to the switch box
terminal, see "7.2 Wiring
4
diagram" [ 281].
Adjust the power supply to the unit, see
"5.1.2 Repair procedures" [
"4.14.1 Checking
a
Action
Return to "4.14.1 Checking
4
procedures" [ 184] of the main PCB
and continue with the next procedure.
Replace the main PCB, see
"4.14.2 Repair procedures" [
EBLA04~08E + EDLA04~08E
4
193].
4
254].
4
256].
4
193].
Daikin Altherma 3 M
ESIE22-09 – 2022.05