Potterton puma 80 pilot light problem

[Dage]

I have been away for a few days and when I came to turn the heating on yesterday I had no joy.

Basically, when I depress the button to ignite the pilot light it lights immediately, however when I turn the button to keep the pilot on constant it goes out.

I have fiiled the system to 2 bars but still the same thing happens. Can anyone out there please help? Thanks in advance.

 

[Slugbabydotcom]

Firstly check that the pilot flame is reaching the thermocouple. If not blow the crap out of the pilot burner with an air duster or a drinking straw if you are really desperate.

Then try a new Thermocouple

Baxi part number 929547

Cant remember whether or not a universal will fit it. If it wont the problem will be at the pilot burner end - Cheaper and easier to get hold of!
Maybe theres a potty engineer about or someone else who has fitted one lately

If the T/C doesnt work; the problem will be the gas valve and thats a Corgi job

 

[Dage]

Thanks for your help - I have checked the thermo cupple etc and found the problem is the high limit thermostat Which cuts out the pilot and won't let it stay alight. I have been told that it may have a manual reset button somewhere. Could you give me any information as to whether this is the case and if so, where it might be.

If not, I guess I need a new thermostat. Thanks again for the help - you've saved me a bundle so far!

 

[ChrisR]

Let's get it right, changing a thermocouple is a Corgi job. Someone who sets the water pressure too high in the hope that it will help him with his pilot clearly isn't competent to touch a boiler.

Universals TC's vary but most don't fit Pumas properly.

There's no reset button.

 

[Slugbabydotcom]

I have been told that it may have a manual reset button somewhere. Could you give me any information as to whether this is the case and if so, where it might be.

Theres a box to the right of the combustion chamber casing 3/4 way up.
Some have a button some dont. If they do its very small and situated right in the middle of the stat.

 

[Dage]

Thanks Slugbaby - can't see any small buttons, will try a new thermostat and hope for the best. Cheers once more.