Potterton Puma 80 PP. Pilot light problem (sounds familiar?)

[Noisypuma]

Pilot lights OK, but appears to "get turned off" a while after the main burner has fired up (seems to be when gas increases to full power). Of course, as a result the main burner immediately shuts down.
This happens every time with CH, and sometimes with HW.
But also, the same pilot shutdown occurs with the rotary switch set to Pilot only - main burner off !

 

[LUNAT]

HI

pilot light injector might be blocked or pilot light might be too weak
to keep gas valve open in both case you need to get CORGI man

 

[Agile]

But also, the same pilot shutdown occurs with the rotary switch set to Pilot only - main burner off !

The Puma does not have a rotary switch!

Tony

 

[Noisypuma]

Maybe Rotary switch is the wrong description, but it's the one for Off, Pilot, Main Burner, on the gas valve, just above the ignition button