Daikin Altherma EBLQ011CA3V3 - Components; 3-Way Valve; Checking Procedures

2 Components
Service manual
35
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
2 Components
2.1 3-way valve
2.1.1 Checking procedures
INFORMATION
It is recommended to perform the checks in the listed
order.
To perform a mechanical check of the 3-way valve
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 The 3‑way valve knob MUST be fully pressed (= motor control).
If NOT fully pressed, press the 3‑way valve knob.
2 The 3‑way valve knob MUST be in domestic hot water or space
heating position, NOT in intermediate position. If in intermediate
position, put the 3‑way valve switch in domestic hot water or
space heating position.
Is the problem solved? Action
Yes No further actions required.
No Perform an electrical check of the
3-way valve (automatic
procedure), see "2.1.1Checking
procedures"on page35.
To perform an electrical check of the 3-way valve
(automatic procedure)
Prerequisite: First perform a mechanical check of the 3‑way valve,
see "2.1.1Checking procedures"on page35.
1 Turn ON the power of the unit.
2 Activate DHW operation via the user interface.
a
b
c
a Water inlet
b Domestic hot water exit
c Space heating exit
INFORMATION
The configuration of the 3‑way valve done by the installer
may differ from the configuration shown in this procedure.
3 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 Same as the 3-way valve inlet
Exit Temperature
Space heating "Much" lower than the 3-way
valve inlet
4 De-activate DHW operation and activate Space operation via
the user interface.
5 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 Component is OK. Return to the
troubleshooting of the specific
error and continue with the next
step.
No Perform an electrical check of the
3-way valve (manual procedure),
see "2.1.1Checking
procedures"on page35.
To perform an electrical check of the 3-way valve
(manual procedure)
Prerequisite: First perform an electrical check (automatic
procedure), see "2.1.1Checking procedures"on page35.
1 Manually put the 3‑way valve in the domestic hot water position
by rotating the 3‑way valve knob.
a
b
c
a Water inlet
b Domestic hot water exit
c Space heating exit
INFORMATION
The configuration of the 3‑way valve done by the installer
may differ from the configuration shown in this procedure.
2 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 Same as the 3-way valve inlet
Space heating "Much" lower than the 3-way
valve inlet
3 Manually put the 3‑way valve in the space heating position by
rotating the 3‑way valve knob.