Baxi boiler showing E133 in Birmingham? It usually means an interruption to the gas supply or a failed ignition. What to check first, from the meter to the condensate pipe.
Gas not reaching the burner, or the flame could not be lit.
If it will not light, the problem is the supply, not the boiler.
Run-out credit is the most common cause of all.
The lever by the meter should be in line with the pipe.
Cold mornings bring E133 calls across the city.
Gas valve, electrode, gas pressure or control board, checked by an engineer.
Not on its own. The boiler has stopped safely. If you smell gas, follow the gas-escape advice straight away.
Yes, usually once. If E133 comes back with gas flowing, it needs looking at.
Yes. The boiler cannot tell the difference between no gas and a blocked condensate, so it shows the same code.
Once is fine. If the code comes straight back, stop resetting and get it looked at, because the boiler is telling you the cause is still there.
Ask to see the Gas Safe ID card when they arrive. The back lists exactly which appliances that engineer is qualified to work on, and the number can be checked on the Gas Safe Register.
E133 on many Baxi boilers means the boiler could not light because gas was not reaching the burner, or the flame could not be established. It is one of the most searched Baxi codes, and it is often not the boiler's fault at all.
Check the gas supply first. Light the hob. If it will not light, the problem is the supply: a prepayment meter out of credit, the emergency control valve next to the meter turned off, or work on the gas in the street. On a smart or prepayment meter, a top-up and a reset is often all it takes. That is the single most common cause in rented homes across Sparkhill, Small Heath and Handsworth.
If the hob lights, check the condensate pipe on a cold day. A frozen pipe causes E133 on the first frosts of the year, especially on semis where the pipe runs a long way outside. Thaw it with warm water and reset once.
If the gas is fine and the pipe is clear, E133 that keeps coming back points to the gas valve, the ignition electrode, low gas pressure at the boiler or the control board. Those need testing by an engineer. Codes differ a little between models and years, so check the meaning in your own boiler manual too.
Send a photo of the display and the boiler badge on WhatsApp and we can usually tell you the likely cause before anyone sets off. If you smell gas, leave the house, do not touch switches and ring the National Gas Emergency line on 0800 111 999 from outside.
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