Hitachi RWM-(H)FSN3E, Service Manual

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11 Servicing
SMGB0070 rev. 1 - 08/2011
313
11
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Replace electrical heater safety surface thermostat (THe)
N O T E
To disconnect this component properly from the Electrical box, see the Electrical wiring diagram chapter of this
manual.
1
Remove service cover.
2 Disconnect the safety thermostat (THe) by pulling
upwards the faston connections.
3 Open the insulation carefully over the fixing nuts (both
sides).
4 Remove x2 nuts (M3) by using box spanner.
5 Install the Surface thermostat by using thermic paste on the contact surface.
N O T E
Be sure that the contact surface of the new thermostat is completely joined with the heater surface.
6 Tighten the nuts with box spanner.
7 Cover the surface thermostat with the insulation remove
in point 2.
8
Connect again the faston connections in to a new sur-
face thermostat and cover it by using cap attached with
the wire.
N O T E
Ensure a perfect insulation inside Surface thermostat,
in case of not good insulation can be a dangerous by
condensing water in to the top of the heater.