3
|
Components
Service manual
277
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
1
Remove the seal cover from the pump and insert a flat screwdriver in the slot
of the rotor shaft of the water pump (through the hole in the pump motor
cover); press and turn it to rotate the water pump rotor shaft.
b
a
a
Seal
b
Water pump motor
Does the rotor of the water pump
motor rotate smoothly?
Action
Yes
Perform an electrical check of the water
pump motor, see
276].
No
Continue with the next step.
2
Remove the water pump housing, see
3
Check for impurities or any objects that may block the water pump.
Any impurities or objects found?
Action
Yes
Remove the impurities or objects that
may block the water pump, see
279].
No
Replace the water pump housing, see
279].
To perform an electrical check of the water pump
1
First perform a mechanical check of the water pump, see
276].
2
Turn ON the power of the unit.
3
Activate
Installer
on the user interface. See the installer reference guide
for the correct procedure.
4
Go to
Actuator test run
via the user interface.
5
Activate the
Pump
.
CAUTION
When the water pump is active and the connector PWM is disconnected from the
PCB, the water pump motor will run at full speed.
6
Check if the pump is working (by listening or by touching the pump).
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