Daikin Altherma EBLQ011CA3V3 - Repair Procedures

2 Components
Service manual
90
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Does the rotor of the water
pump motor rotate smoothly?
Action
Yes Return to the troubleshooting of
the specific error and continue
with the next procedure.
No Replace the water pump motor,
see "2.26.2Repair
procedures"on page90.
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 page89.
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? Action
Yes Return to the troubleshooting of
the specific error and continue
with the next procedure.
No Perform the next step.
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?
Action
Yes Replace the water pump
housing, see "2.26.2Repair
procedures"on page90.
No Perform a check of the hydro
PCB, see "2.14.1Checking
procedures"on page58.
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 "2.19 Plate
work"on page77.
1 Disconnect the connector from the water pump motor.
b
b
d
c
a
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 "2.26.2 Repair
procedures"on page90.
To install the water pump motor
1 Install the water pump motor on the pump housing.
b
b
d
c
a
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? Action
Yes No further actions required.
No Return to "2.26.1Checking
procedures"on page89 of the
water pump and continue with
the next procedure.