Technical data

6 720 611 445 GB (04.05)
Commissioning
25
5.5 Frost protection
The appliance has an in-built frost protection device
which is generally suitable for most applications.
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 heating system.
Suitable products are available from Betz-Dearborn
Tel: [phone] and Fernox Tel: 01799-
550811.
5.6 Fault Condition
In the unlikely event of a fault occurring while the appli-
ance 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
temperature will be displayed.
i
A list of faults that may occur is given on
page 40.