11
TO STOP THE APPLIANCE
For Short Periods
Turn the central heating temperature control knob fully anti-
clockwise to the ‘’position. Domestic Hot Water will still be
available as required.
For Long Periods
Switch off the mains electricity.
A facia mounted mechanical programmer will require resetting
once the mains supply has been disconnected.
ELECTRICITY SUPPLY FAILURE
If the electricity supply fails the appliance will not operate. Once
the supply is restored the appliance will return to normal operation. If
a programmer is fitted, check that the settings have been maintained.
IGNITION LOCKOUT
The appliance will enter a lockout condition in the event of the
burner failing to ignite.
If the burner fails to light within a preset time of 10 seconds the
electricity supply to the gas valve will be interrupted.
The appliance can be reset by ending the present demand which
in a central heating demand means turning the central heating
temperature control to ‘’and back to the required setting or ending
the room thermostat/programmer demand.
Re-ignition will be attempted after a delay of four minutes.
Domestic hot water demands do not have this delay.
Check that the gas supply has not been interrupted.
If this condition continues to occur, then call a service engineer.
AIR FLOW DEVICE
The appliance will enter a lockout condition in the event of an
air flow fault.
If the controls fail to detect the correct air flow through the
appliance the electricity supply to the gas valve will be interrupted.
The appliance will try to re-light once the air-flow signal is re-
established. Check that the flue terminal has not been obstructed or
damaged, and that the fan and air pressure switch are in good order.
If this condition continues to occur, then call a service engineer.
REMOVAL AND REPLACEMENT
OF THE FRONT PANEL (See Fig. 3)
Necessary to check if burner is lit.
Removal:
Holding the panel at the edges, slide it upwards to disengage the
clips and ease the top edge forwards and upwards to raise it clear of
the two pegs on the top edge of the facia.
Replacement:
Locate the two holes in the bottom edge of the front panel over
the two pegs on the top edge of the facia and reverse the removal
procedure.
WARNING: Do not touch any component within the appliance
when it is running as some may be very hot.
