BoilerFaultCodesPotterton E134 Fault Code
The Potterton E134 fault code means: your boiler is trying to start but cannot detect a flame, meaning it is failing to ignite after several attempts.. It appears on 1 Potterton model in our database.
Technical description: Elapsed time gas valve open without gas
What causes the Potterton E134 fault?
This fault occurs when the boiler attempts to ignite several times but fails to establish a steady flame. The most common reasons include a lack of gas reaching the unit, a blocked burner, or worn-out ignition components that can no longer create a spark. It can also be caused by a faulty sensor that fails to tell the boiler that a flame has actually been lit.
This fault is more common during the first cold snap of winter when components that have been idle over summer are suddenly put under heavy strain.
DIY fix possible
Check if other gas appliances, like a cooker, are working to confirm gas is reaching the propertyEnsure your gas meter has credit if you use a pre-payment meterCheck that the gas emergency control valve is in the 'on' positionPress the reset button for five seconds
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Potterton models that show the E134 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton E134 fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026