Daikin altherma 3 M Service Manual page 117

Problem solved?
Repair procedures
To remove the backup heater
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
Are the measured voltages of the
backup heater contactors correct?
Yes
No
7 Measure the operating voltage on the specific contactor.
Is the measured operating voltage of
the backup heater contactor correct?
Yes
No
After all checking procedures listed above have been performed:
Is the problem solved?
Yes
No
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
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.
3
Action
Return to "Checking
4
procedures" [ 112] of the backup
heater and continue with the next
procedure.
Continue with the next step.
Action
Replace the specific backup heater
contactor(s), see "Repair
4
procedures" [ 117].
Check for the reason of faulty operating
voltage (broken wiring, faulty contact,
...), see "6.2 Wiring diagram" [
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
"4.3.2 Repair procedures" [
Components
|
4
314].
4
302].
Service manual
117