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Disassembly- and Reassembly advice
2.3. Remove the housing.
To remove the housing, start at the front side of the housing and undo the clicks (1) on both sides.
Next undo the snaps on the back site of the housing (2), undo them with a fl athead screwdriver.
Make sure that none of the snaps snap back.
To avoid damaging the capacitor on the PCBA circuit be very gentle and start to remove the housing upwards fi rst lift
from position
A
for approx. 1 or 2 cm and then gently lift the housing upwards in the direction of the arrow B.
But mind the fl at cable running through the guide on the inside of the housing and the water level sensor still
connected to the inside of the housing.
1
You can now access the Boiler and Pump, to remove them, undo the electrical connections and hoses, and reinstall
in the reverse order.
Make sure before placing the housing part back, that the Hall sensor (WLI) cable is routed correctly.
Therefore when re-assembling, make sure the routing of the WLI cable is according the picture, see red arrows for
the attention points how to dress the cable.
Arrow
C
make sure the white NTC cable is pushed inside by the WLI sensor cable.
Place back the housing:
Gently place the housing downwards and make sure you fi rst click the snap locks on the front side housing position
(1) and then snap back the housing snaps on position (2).
Any Ty-wrap that has been removed needs to be replaced by a new one, and tightened with the specifi ed forces.
3. To replace the PCBA.
3.1. Unscrew the inner frame.
Unscrew the two screws (D, T15) holding the inner frame in place, take special care to note the proper wire routing,
and make sure reinstalling the PCBA will be done in an identical way.
2
B
1
HD7892/60/G /61/G
A
2
C
5-17
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