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Troubleshooting - boiler not working
Start
EITHER
Is the E and
R symbol
illuminated or
flashing?
YES
Press the reset button on
the boiler's control panel
Serial number
Is the gas supply is turned on? Check if other gas
appliances are operating (e.g. fire, cooker)
YES
R
Is there electricity
to the boiler? Is
the display lit?
YES
Is the burner flame showing?
NO
Is the timer set to ON and calling for heat?
YES
Is the room thermostat (if fitted) set high enough?
YES
Is the central heating system pressure
between 1and 2.5 bar?
YES
Reset symbol
R
Error code
Error symbol
If it does not reset
Reset button
NO
If no gas, consult your supplier
NO
Check electrical supply to boiler is switched on
Boiler should be operating normally. If
problems persist, contact your gas installer
YES
Burner flame
(indicates
burner is on)
NO
Ensure timer is set to ON for central heating
(see any instructions supplied with timer)
NO
Turn the room thermostat to maximum setting
If the reading falls below 1
NO
bar repressurise the system
Error code 118 showing
low pressure
OR
Is the spanner symbol illuminated or flashing?
Flame failure
Spanner symbol
YES
CONTACT YOUR INSTALLER
OR SERVICE ENGINEER
R
R
R
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