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10
OPERATING THE APPLIANCE
OPERATING THE APPLIANCE
SUMMER MODE, HOT WATER ONLY
With room temperature controller fitted
Turn temperature control
appliance anti-clockwise as far as the stop.
The central heating is now turned off. The hot
water function and the power supply for the
programmer and thermostat remain switched on.
FROST PROTECTION
Leave master switch switched on.
If the temperature falls to 5°C the boiler will fire
to avoid the possibility of freezing.
Add a suitable anti-freeze fluid to the water in
the central heating system.
FAULT CONDITION
In the unlikely event of a fault occurring while
the appliance is in operation:
The display shows a fault code and the button
may also flash.
If the button
Press and hold the button
shows "— —". The appliance will then start up
again and the display will show the central
heating flow temperature.
If the button
Switch the appliance off and then on again at
the master switch.
The appliance will start up again and the
central heating flow temperature will be
displayed.
If the fault remains and cannot be cleared:
Call Worcester Heat Systems Ltd. for
assistance, giving a description of the fault
and, if possible the fault code from the fascia
display.
WORCESTER BOSCH GREENSTAR HIGHFLOW 440
6 720 611 731a (08.04)
on the
flashes:
until the display
does not flash:
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