Repair Procedures - Daikin Altherma EBLQ011CAV3 Service Manual

2 Components
Does the rotor of the water
pump motor rotate smoothly?
Yes
No
To perform an electrical check of the water pump
1 First perform a mechanical check of the water pump, see
"2.26.1 Checking procedures" on
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 hydro PCB, the water pump motor
will run at full speed.
6 Check if the pump is working (audially or by touching the
pump).
Is the water pump working?
Yes
No
7 Disconnect the water pump connector from the hydro PCB.
8 Measure the voltage on the water pump connector: L ‑ N on the
hydro PCB.
INFORMATION
The measured voltage may differ depending on the type of
water pump installed.
Is the measured voltage
correct?
Yes
No
2.26.2

Repair procedures

To remove the water pump motor
Prerequisite: Turn OFF the unit via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
work" on page 77.
1 Disconnect the connector from the water pump motor.
Service manual
90
Action
Return to the troubleshooting of
the specific error and continue
with the next procedure.
Replace the water pump motor,
see "2.26.2 Repair
procedures" on page 90.
page 89.
Action
Return to the troubleshooting of
the specific error and continue
with the next procedure.
Perform the next step.
Action
Replace the water pump
housing, see "2.26.2 Repair
procedures" on page 90.
Perform a check of the hydro
PCB, see "2.14.1 Checking
procedures" on page 58.
"2.19 Plate
a Connector
b Bolt
c Water pump motor
d Pump housing
2 Remove the 4 bolts that fix the water pump motor to the pump
housing.
3 Separate the water pump motor from the pump housing.
4 Remove the water pump motor.
5 To install the water pump motor, see
procedures" on page 90.
To install the water pump motor
1 Install the water pump motor on the pump housing.
a Connector
b Bolt
c Water pump motor
d Pump housing
CAUTION
Make sure to correctly install the water pump motor and
the seal.
2 Fix the water pump motor by tightening the 4 bolts.
3 Connect the connector to the water pump motor.
Is the problem solved?
Yes
No
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
b c d
b
"2.26.2 Repair
b c
d b
Action
No further actions required.
Return to "2.26.1 Checking
procedures" on page 89 of the
water pump and continue with
the next procedure.
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
a
a