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Servicing
Comfort I – 6720810964 (2017/02)
8Servicing
These units can not be serviced.
Should either unit fail to function correctly check that the:
Programmer/Receiver settings are correct
RF signal link between the units is set up correctly,
sections 6.5 and page 13 Radio settings
Room thermostat batteries are the correct type, fitted
correctly and are not exhausted.If in doubt, fit new
batteries section 9.1.
9Maintenance
These units require no maintenance apart from replacing used
batteries in the Room thermostat.
The outer casing can be wiped clean using a dry cloth, do not
used polish or detergents
9.1 Room thermostat battery replacement
If under normal operation the battery low symbol appears, then
the batteries require replacing within 60 days or the
programmed settings will be lost.
Replace the batteries with the same type: AAA 1.5V alkaline
Fig. 22 Low battery indication
Battery access
To remove the Room thermostat from the wall mounting plate:
1. Insert a suitable flat bladed screwdriver into the slot on the
bottom edge of the device
2. Twist the screwdriver gently until the bottom catches are
released.
3. Separate the device from the wall plate.
Fig. 23 Remove back plate
Battery replacement
Replace the spent batteries with new ones of the same type,
ensuring that they are installed in the correct orientation.
Insert the batteries ensuring that the positive + end of the
battery is inserted into the positive + terminal of the holder.
Fit the front cover to the wall plate, locating the catches [1] on
the top edge and then snap the bottom edge into place.
Fig. 24 Replace batteries
6720810964-23.1Wo
1
Ensure that the batteries are correctly oriented,
positive (+) battery terminal to the positive (+)
battery holder terminal as shown in figure 24
1.
3.
6720810964-19.1Wo
2.
6720810964-22.1Wo
+
+
1
18


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