Potterton showing E133 in Oldbury? The boiler could not light. Supply checks to rule out first, the winter pipe problem, and what an engineer will test.
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Light a ring on the cooker. Nothing there means a supply issue. Check the credit, then check that the lever on the meter is running along the pipe.
The plastic pipe through the wall can ice up in a cold spell. Warm water from a kettle left to cool a little, poured along it, usually frees it.
One reset tells you whether it was a blip. E133 again straight after means stop and get it looked at.
Gas pressure at the inlet, the ignition electrode and its gap, the flame detection circuit and the gas valve. Usually one part, not a whole boiler.
The engineer tests the supply, then watches the boiler try to light. That shows which part is failing. The boiler is run through a full cycle before they leave. Allow one to two hours.
A photo of the display and the boiler label. Tell us whether the hob works and whether the pipe outside has frozen before. Both help us bring the right part.
E133 on a Potterton means the boiler asked for gas, tried to ignite it and did not see a flame.
More often than people expect, the problem is not the boiler at all. A prepayment meter may be out of credit. The meter valve may have been knocked off. The supply may have been cut during work in the street.
In January, a frozen condensate pipe on an Oldbury semi does the same job. When all of that is fine, the ignition or gas valve inside needs an engineer. Your manual confirms the meaning for your model.
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Learn more →No. It means the gas did not light, and the boiler cut the supply to itself. If you can smell gas, that is separate and urgent. Get out and call 0800 111 999.
That pattern points at the condensate pipe. Insulating or re-running the outside section is the lasting fix.
Any gas engineer should show a Gas Safe ID card. The back lists exactly what they are qualified to work on, so it is worth a look.
The part and the access. An electrode is a short job. A gas valve is longer. You hear the likely cost before work begins.
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Send a photo of the problem on WhatsApp for the quickest reply, or give us a call. You get a free, no-obligation quote, usually the same day.
