Hydro Pcb; Checking Procedures - Daikin altherma 3 M Service Manual

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3
|
Components

3.12 Hydro PCB

3.12.1 Checking procedures

To perform a power check of the hydro PCB
Service manual
160
3 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02 MPa.
4 Wrap a wet rag around the high pressure switch and any other components
near the high pressure switch and solder the high pressure switch pipe to the
refrigerant pipe.
a High pressure switch
b Faston connector
c High pressure switch pipe
CAUTION
Overheating the pressure switch will damage or destroy it.
5 After soldering is done, stop the nitrogen supply after the component has
cooled‑down.
6 Connect the Faston connectors to the high pressure switch.
7 Perform a pressure test, see
8 Add
refrigerant
4
procedures" [
 291].
Is the problem solved?
Yes
No
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.
b
b
"4.2.1 Checking
to
the
refrigerant
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
a
c
4
procedures" [
 286].
circuit,
see
"4.2.2  Repair
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03

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