4
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Components
Service manual
130
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
Are the measured voltages of the
backup heater contactors correct
(contacts open)?
Action
Yes
heater and continue with the next
procedure.
No
Continue with the next step.
9
Measure the operating voltage on the specific contactor.
Result:
The measured operating voltage MUST be:
▪
230 V AC when the contacts should be closed.
▪
0 V AC when the contacts should be open.
Is the measured operating voltage of
the backup heater contactor correct?
Action
Yes
Replace the specific backup heater
contactor(s), see
No
Check for the reason of faulty operating
voltage (broken wiring, faulty contact,
…), see
281].
Problem solved?
After all checking procedures listed above have been performed:
Is the problem solved?
Action
Yes
No further actions required.
No
Return to the troubleshooting of the
specific error and continue with the
next procedure.
Repair procedures
To remove the backup heater
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work.
1
Drain water from the water circuit, see
269].
2
Unscrew and remove the air purge valve from the backup heater. Keep for
reuse.
3
Cut the insulation that covers the upper backup heater coupling.
4
Open the insulation and remove the screw from the pipe clamp.
draft – 31/05/2022 15:53
Summary of Contents for EBLA04E V Series
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