Baxi Solo HE24 Overheat Thermostat

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Morning all,

I have a Solo HE24 with an intermittent overheat lockout problem. This morning appears to have got a bit worse so managed a bit of debugging and found that the Safety Thermostat (the one screwed to the fan) appears to be opening up.

I'm not sure if the thermostat is faulty or whether it is genuinely overheating in that space...

Does anybody happen to know common faults that cause this?

Manual references this as spare part (obsolete but seems like there are replacements) https://www.dhsspares.co.uk/product/baxi-242235-thermostat-overheat-1114730

Last serviced in May (not by me :))

Thanks for any tips
Cheers
 
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Often caused by a faulty combustion door failure that needs checking by someone with the correct knowledge and test equipment
 
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Often caused by a faulty combustion door failure that needs checking by someone with the correct knowledge and test equipment
Thankyou - so to be clear you think it sounds like the thermostat is opening as it should, at the temperature it should, so it's a genuine overheating issue?

Thanks for the heads up it could be the combustion door too. That would make sense. And, yes, putting the screwdrivers down and picking up the phone :)
 
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