Repair Procedures - Daikin Altherma EBLQ011CAV3 Service Manual

2 Components
4 Use a contact thermometer to measure the temperature at the
3‑way valve inlet, the domestic hot water exit and the space
heating exit.
Exit
Domestic hot water
Space heating
Both temperature checks
performed above are correct?
Yes
No
2.1.2

Repair procedures

To remove the 3-way valve 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 3‑way valve motor connector from the hydro
PCB.
2 Route the 3‑way valve motor harness through the grommet in
the switch box.
3 Cut all tie straps that fix the 3‑way valve motor harness.
4 Pull the 3-way valve knob and remove it from the 3‑way valve
motor.
a
b
a 3-way valve knob
b 3-way valve motor
5 Loosen the screw.
Service manual
36
Temperature
"Much" lower than the 3-way
valve inlet
Same as the 3-way valve inlet
Action
Install a new 3-way valve motor,
see "2.1.2 Repair procedures" on
page 36.
Replace the valve body, see
"2.1.2 Repair procedures" on
page 36.
"2.19 Plate
a
a Screw
6 Remove the 3‑way valve motor from the 3‑way valve body.
7 To install the 3‑way valve motor, see
procedures" on page 36.
To remove the 3-way valve body
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 Drain water from the water circuit, see
procedures" on page 96.
2 Pull the 3‑way valve knob from the 3‑way valve body.
3 Loosen the screw and remove the 3‑way valve motor from the
3‑way valve body.
4 Remove the insulation that covers the 3‑way valve body.
5 Remove the 3 clips that fix the 3‑way valve body to the piping.
a
a
a Clip
b 3-way valve body
6 Remove the 3‑way valve body.
7 To install the 3‑way
procedures" on page 36.
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
"2.1.2 Repair
"2.19 Plate
"3.3.2 Repair
b a
valve body, see "2.1.2 Repair
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02