Potterton Puma 80 Boiler Pilot On But Will Not Fire Up.

[andy64]

Hi All

I have a Potterton Puma 80 Permanent Pilot.

A couple of days ago the pilot flame went out so I tried to relight it.

It lights first time but does not stay on when releasing gas valve button.

Did this 10 times with no luck flame going out on releasing the gas valve button.

As it would not light I blew the pilot jet out with compressed air.

This worked for about 4 days with no more problems.

Today turned hot water tap on but boiler did not fire up. Pilot light gone out again.

Relit pilot light and it stayed on when releasing gas valve button.

Turned on hot water tap but boiler did not fire up although pilot was still lit. Red light comes on on PCB indicating calling for hot water but boiler does not fire up.

Tried central heating and that would not work either.

Then pilot light went out. Is this due to unburnt gas in chamber????

Not sure whats going on here??? Fault seems to be intermittant.

System pressure ok at 2 bar. 5 months ago fitted a new heat exchanger as old one leaked (losing system pressure).


Any help appreciated.

 

[Gasguru]

Read this...

//www.diynot.com/forums/plumbing/diy-gas.8090/

Leave the boiler alone...what you describe appears to be basic faults to a boiler engineer so call them out. Be aware that the Puma was fitted with one of two types of pilot burner, one of which has been obsolete for years. So you may find the boiler has had its day.