Repair Procedures - Daikin EBLA04E V Series Service Manual

4.2.2 Repair procedures

To remove the 4-way valve coil
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
INFORMATION
The flow through the 4-way valve is correct if the water temperature after the heat
exchanger rises/drops when operating in Heating/Defrost mode.
Is the flow correct?
Yes
No
3 Connect a manifold to one of the service ports of the refrigerant circuit and
check the pressure (suction, discharge). Compare with normal operation
conditions of the unit.
Refrigerant pressure correct?
Yes
No
4 If the electrical check and position check have been performed with the unit
operating in:
▪ Defrost mode: Wait for the unit to switch to Heating (service monitoring
tool) mode and again perform the electrical check and position check.
▪ Heating mode: There is a possibility to put the unit in Defrost operation via
Forced defrost (see installer reference guide for more information).
Again perform the electrical check and position check when the unit is
operating in Defrost mode.
Is the flow correct?
Yes
No
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
Prerequisite: If needed, remove any parts to create more space for the removal of
the 4‑way valve coil.
1 Remove the screw and remove the 4‑way valve coil from the 4‑way valve
body.
4 |
Action
Skip the next step.
Perform the next step of this procedure.
Action
Replace the body of the 4‑way valve,
see "4.2.2 Repair procedures" [
Leaks may be found in the refrigerant
circuit. Perform a pressure test of the
refrigerant circuit, see "5.2.1 Checking
4
procedures" [ 256].
Action
4‑way valve is OK. Return to the
troubleshooting of the specific error
and continue with the next procedure.
Replace the body of the 4‑way valve,
see "4.2.2 Repair procedures" [
"4.16 Plate work" [
draft – 31/05/2022 15:53
Components
4
113].
4
113].
4
202].
Service manual
113