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Operating the Appliance
6 720 611 138 GB (03.11)
3.6 Frost protection
B Leave master switch switched on.
If the appliance is to be left for long periods switch the central
heating off:
B Add a suitable anti-freeze fluid to the water in the central heat-
ing system.
Suitable products are available from Betz-Dearborn Tel.: 0151
4209563 and Fernox Tel.: 01799 550811.
3.7 Fault Condition
In the unlikely event of a fault occuring while the appliance is in
operation:
The display then shows a fault code and the button may also
flash.
If the button flashes:
B Press and hold the button until the display shows “––”.
The appliance will then start up again and the display will show
the boiler flow temperature.
If the button does not flash:
B Switch the appliance off and then on again at the master
switch.
The appliance will start up again and the boiler flow tempera-
ture will be displayed.
If the fault remains and can not be cleared:
B Call your approved installer or Worcester Bosch Customer
Services for assistance, giving a description of the fault and, if
possible, the fault code from the facia display.