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4
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Components
Service manual
235
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
Does the user interface receive power? Action
No
Continue with the next step.
4
Measure the voltage on the connector X48A on the hydro PCB.
Result:
The measured voltage MUST be 12 V DC.
Is the measured voltage correct?
Action
Yes
Correct the wiring between the hydro
PCB and the user interface, see
281].
No
Perform a check of the hydro PCB, see
175].
To check the correct functioning of the remote controller user interface
1
Check the display for the following items:
▪
Pinhole, bright spot, black spot, white spot, black line, white line, foreign
particle, bubble:
The color of a small area is different from the remainder. The phenomenon
does NOT change with voltage.
▪
Contrast variation:
The color of a small area is different from the remainder. The phenomenon
changes with voltage.
▪
Polarizer defect:
Scratch, dirt, particle, bubble on polarizer or between polarizer and glass.
▪
Dot defect:
The pixel appears bright or dark abnormally.
▪
Functional defect:
No display, abnormal display, open or missing segment, short circuit, false
viewing direction.
▪
Glass defect:
Glass cracks, shaved corner of glass, surplus glass.
2
Check that information is shown correctly and can be navigated through on
the display of the remote controller user interface.
3
Check that settings can be changed and saved, see
236].
Does the remote controller user
interface function correctly?
Action
Yes
Return to the troubleshooting of the
specific error and continue with the
next procedure.
No
Continue with the next step.
4
Perform a check of the communication wiring between the remote controller
and the unit PCB.
Communication wiring is correct?
Action
Yes
Replace the remote controller user
interface, see
236].
No
Correct the wiring between the remote
controller and the unit PCB, see
281].
draft – 31/05/2022 15:53
Summary of Contents for EBLA04E V Series
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