BoilerFaultCodesYour boiler has failed to light, which is usually caused by a temporary interruption in the gas supply or a frozen condensate pipe.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Ignition fault
What causes this fault?
This fault occurs when the boiler has tried to ignite several times but failed to detect a flame. The most common reason is a temporary interruption in the gas supply or a blockage in the pipe that carries away waste water. It can also be caused by wear and tear on the internal components that produce the spark or control the gas flow.
This fault is much more common during freezing winter temperatures, as the external condensate pipe can freeze and cause the boiler to shut down for safety.
DIY fix possible
Check if other gas appliances in your home, like a hob, are working correctly.If it is freezing outside, check the external plastic condensate pipe for ice and thaw it with warm water.Hold the reset button for five seconds to see if the boiler restarts.
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A boiler cover plan would cover faults like E133 — no call-out fees, no surprises.
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Potterton Promax is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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