Discuss Baxi error code E133 in the USA area at PlumbersForums.net

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My baxi boiler keeps showing error code E133 we reset it and it comes back on; this only seems to happen late afternoon early evening, it can happen a few times in one evening then not again for a few days later sometimes a week later, I’ve been told it’s low gas pressure but when I googled it I didn’t find anything about low gas pressure, does anyone know what the problem could be as I’m worried incase the boiler breaks now the weathers getting colder, thanks
 
The code is related to several issues, but from what you describe, sounds likely to be condensate related - check this out - eg blocked, are you subject to extremely low temperatures, eg freezing.
 
Hi no it’s not freezing or anything, it’s cold but not cold enough to freeze, I just don’t understand why it happens as we have the heating on all day then it always happens in the late afternoon evening, at the moment it’s happened about 7 times since 4 o clock and now when we are resetting it it’s not igniting the flame.
 
has your boiler been serviced, is it one with ally heat exchanger,
Hi I’m not sure about an ally heat exchanger, it’s actually due a service which is meant to be being done soon, we’ve not been able to get it on since 4 o clock, then about an hour ago I reset it again and it did fire up but only stayed on for about 5 mins. It’s just strange as it’s always fine all day then starts being funny early evening, usually it will come on and stay on after I’ve reset it a few times but tonight it’s not for staying on longer than 5 mins.
 
Not that strange if it’s condensate related
Someone’s been to check the pipe and he’s said it’s not blocked. He keeps saying he thinks it’s low gas pressure and it must be when all my neighbors come home and put the heating on, that’s why we have problems in the evening, surely that can’t be right as it doesn’t happen every evening and it could be a week now before it does it again, we eventually got the boiler back on about midnight and it’s stayed on since, he was saying to ring the gas board but surely if it was low gas pressure it would show a different error code.
 
if it was low gas pressure it would show a different error code.
Nope, same code. It can mean several things, eg:

Error codes - https://www.mainheating.co.uk/support/error-codes (main are Baxi group)

 
the condensate trap fills with ali slows the condence water down partly goes back to boiler will shut the boiler down
 

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