Lockout potterton combi 80

[sunrays]

Hi all. I have a problem with my potterton combi 80 boiler. The DHW is too hot and sometimes locks out. Heating was on last night and when we ran the bath the lockout button had to be pushed twice in as many mins. I can reset it but it locks out after another minuite or 2. I think it should be pre set at 60 and not adjustable. I will measure the temp tonight to see what it is. I cant find my service book so cant look it up at the moment. Hopefully some one can help!
Many thanks
Ray

 

[Agile]

I am not quite sure what boiler this is.

I would have said a Puma electronic and a flame failure lockout as a result of an overheat.

The thermistor may be faulty or the gas settings wrong.

Gas/combustion problems need a competent engineer.

Tony

 

[sunrays]

Thanks Tony I will call my local gas engineer to look at the gas settings.
i thought it might just be a £10 switch, but it never is!
Thanks for your advice.
Ray

 

[Agile]

The thermistor is only about £20 !

Tony