Technical data

13
Operating the Appliance
6 720 611 138 GB (04.05)
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.: [phone].
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.