Potterton Promax System HE Plus A Range - Troubleshooting

2.0 Troubleshooting
4
© Baxi Heating UK Ltd 2012
START
Make sure the gas supply is
turned ON and check if other
gas appliances are operating
(e.g. fire, cooker).
If no gas, consult your
supplier.
Is the ON/OFF/Reset
Select Switch in the
( ) position and
the display lit ?
Is the ( ) light on and the
( ) on ?
Check electricity to the
boiler is switched on.
Reset
Display
Central Heating
Indicator
Burner On
Indicator
Boiler operating satisfactorily.
bar
0
1
2
3
4
Is the Central Heating System
Pressure needle in the GREEN
section, between 1 and 2.5 bar ?
If the reading falls below 1 bar
repressurise the system as
described in section 3.1.
Does the display show an error
code e.g. E133, E110 ?
Boiler not working
NO
NO
YES
YES
YES
NO
Turn the ON/OFF/Reset
Selector Switch to Reset.
Reset
Error Code E119 showing low
pressure.
NO
YES
YES
NO
If boiler does not
Reset