Bosch Worcester Greenstar Ri ErP + Series - Overheat Thermostat; Flue Overheat Thermostat (with Grommet)

SERVICE AND SPARES
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7.8.3 OVERHEAT THERMOSTAT
Refer to figure 68 for removal.
▶ Remove two electrical connectors from thermostat.
3.Slacken and remove fixing screw and thermostat (3).
▶ When replacing ensure thermostat sits correctly on surface of the
casting with the left hand side of thermostat sitting up against the
shoulder.
Fig. 68 Primary sensor and overheat thermostat
7.8.4 FLUE OVERHEAT THERMOSTAT
(WITH GROMMET)
To remove and replace the thermostat either:
▶ Using a small terminal screwdriver, prise the thermostat and grommet
from the plastic housing.
Take care not to damage the plastic housing.
-or-
1. Release the flue connection from the sump.
2. Push the flue tube up.
Fig. 69 Lower exhaust section
▶ Remove electrical connections.
1. Push the flue limit thermostat in from the sump.
▶ Retrieve the thermostat from the sump well.
Fig. 70 Remove thermostat
To replace, push the thermostat and new grommet gently back into the
opening until contact with the locating ridge is felt.
It is essential that the mating surface of the thermostat is
coated with heat conductive paste.
6720804530-15.1Wo
1.
2.
3.
6720644744-47.1Wo
2.
1.
6720643895-70.1Wo
1.