Components; 3-Way Valve; Checking Procedures - Daikin EBLA04E V Series Service Manual

4 Components

4.1 3-way valve

4.1.1 Checking procedures

To perform a mechanical check of the 3-way valve
To perform an electrical check of the 3-way valve
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
CAUTION
When replacing a component ALWAYS make sure the correct spare part for your unit
is installed.
INFORMATION
It is recommended to perform the checks in the listed order.
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
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?
Yes
No
Prerequisite: First perform a mechanical check of the 3-way valve, see
"4.1.1 Checking procedures" [
1 Turn ON the power of the unit.
2 Activate DHW operation via the user interface.
3 Measure the voltage on connector X2M pin 13 and pin 14a.
Result: The measured voltage MUST be 230 V AC.
4 Measure the voltage on connector X2M pin 13 and pin 12.
Result: The measured voltage MUST be 230 V AC.
5 De-activate DHW operation and activate Space operation via the user
interface.
6 Measure the voltage on connector X2M pin 13 and pin 14a.
Result: The measured voltage MUST be 230 V AC.
7 Measure the voltage on connector X2M pin 13 and pin 12.
Result: The measured voltage MUST be 0 V AC.
"4.16 Plate
Action
No further actions required.
Perform an electrical check of the 3-way
valve, see "4.1.1 Checking
procedures" [
4
99].
draft – 31/05/2022 15:53
4 | Components
work" [ 4 202].
4
99].
Service manual
99