Daikin Altherma EBLQ011CA3V3 - Repair Procedures

2 Components
Service manual
36
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
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 Temperature
Domestic hot water "Much" lower than the 3-way
valve inlet
Space heating Same as the 3-way valve inlet
Both temperature checks
performed above are correct?
Action
Yes Install a new 3-way valve motor,
see "2.1.2Repair procedures"on
page36.
No Replace the valve body, see
"2.1.2Repair procedures"on
page36.
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 "2.19 Plate
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.
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 "2.1.2 Repair
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 "2.19 Plate
work"on page77.
1 Drain water from the water circuit, see "3.3.2 Repair
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
b
a Clip
b 3-way valve body
6 Remove the 3‑way valve body.
7 To install the 3‑way valve body, see "2.1.2 Repair
procedures"on page36.