Repair Procedures - Daikin EBLA04E V Series Service Manual

4.11.2 Repair procedures

To remove the high pressure switch
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
High pressure switch connector
measurements are 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: Recuperate the refrigerant from the refrigerant circuit, see
"5.2.2 Repair procedures" [
1 If needed, remove any parts to create more space for the removal of the high
pressure switch.
2 Remove the compressor insulation, see
3 Disconnect the Faston connectors from the high pressure switch.
4 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02 MPa.
5 Wrap a wet rag around the components near the high pressure switch. Heat
the brazing point of the high pressure switch pipe using an oxygen acetylene
torch and remove the high pressure switch pipe from the refrigerant pipe
using pliers.
b b
a
c
a High pressure switch
b Faston connector
c High pressure switch pipe
6 Stop the nitrogen supply when the piping has cooled down.
7 Remove the high pressure switch.
Then
High pressure switch is OK. Return to
the troubleshooting of the specific error
and continue with the next procedure.
Replace the high pressure switch, see
"4.11.2 Repair
4
261].
"4.7.2 Repair
draft – 31/05/2022 15:53
4 | Components
procedures" [ 4 173].
4
"4.16 Plate work" [ 202].
4
procedures" [ 153].
Service manual
173