4.0 Fault Indication
7
© Baxi Heating UK Ltd 2011
4.1
Fault Indication
1. Your Main Combi 24 HE has three neon indicators. The
upper two function as boiler on and fault indicators.
2. Depending on the nature of the fault the upper two neons
will illuminate, go off or flash.
3. There are five possible combinations, each indicating one
or more fault conditions. These are described below.
A
The flue or flue terminal is blocked or obstructed in some
way, or there is an internal fault.
If there is no external blockage of the flue that can be easily
removed contact your Installer or Service Engineer.
B
The circulating pump is faulty or the system pressure has
dropped. Check the system pressure (see page 7). If the
pressure is in the normal range a pump fault is indicated.
Contact your Installer or Service Engineer.
C
A fault on the boiler temperature sensor is indicated. Contact
your Installer or Service Engineer.
D
The primary system or the boiler has overheated. Allow the
boiler to cool. Turn the selector switch fully anti-clockwise
against the spring pressure to the ‘Reset’ position and hold for
at least 2 seconds.
If this occurs repeatedly contact your Installer or Service
Engineer.
If the boiler does not relight after resetting it is possible that
the flue has overheated. Contact your Installer or Service
Engineer.
E
The burner has failed to light, or incomplete lighting of the
burner has occurred. Turn the selector switch fully anti-
clockwise against the spring pressure to the ‘Reset’ position
and hold for at least 2 seconds.
If this occurs repeatedly contact your Installer or Service
Engineer.
If the boiler does not relight after resetting blockage of the
condensate drain or trap has occurred. Contact your Installer
or Service Engineer.
Burner On
Flame Failure
Power On
Off
Fast Flashing (2 every second)
On
A
Burner On
Flame Failure
Power On
Off
Slow Flashing (1 every 2 seconds)
On
B
Burner On
Flame Failure
Power On
Slow Flashing (1 every 2 seconds)
Slow Flashing (1 every 2 seconds)
On
C
Burner On
Flame Failure
Power On
Slow Flashing (1 every 2 seconds)
On
On
D
Burner On
Flame Failure
Power On
Off
On
On
E
Reset Position
Supplied by HeatingSpares247.com
