3 | Components
Service manual
117
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
Are the measured voltages of the
backup heater contactors correct?
Action
Yes Return to "Checking
procedures"[4112] of the backup
heater and continue with the next
procedure.
No Continue with the next step.
7 Measure the operating voltage on the specific contactor.
Is the measured operating voltage of
the backup heater contactor correct?
Action
Yes Replace the specific backup heater
contactor(s), see "Repair
procedures"[4117].
No Check for the reason of faulty operating
voltage (broken wiring, faulty contact,
…), see "6.2Wiring diagram"[4314].
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 "4.3.2Repair procedures"[4302].
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.