Potterton Puma 80 - Low Pressure

[nfitzger]

Hi,
I have a Potterton Puma 80 combi boiler. The low pressure light is constantly coming on but I cannot find any sign of a leak anywhere.
Is there another possible cause to this problem besides loss of water from the system ?

Thanks,

Neil

 

[kevplumb]

what's the pressure on the gauge

 

[ChrisR]

They stick once the pressure has been low. Change it.

 

[Soggy_weetabix]

Or remove, clean switch and part of divertor it screws into. Replace, refill...and no pressure light.

Just replacing l/p switch does not always work. (I know from experience)

This applies ONLY if presure is above 0.5 bar and light is on

David

 

[nfitzger]

The pressure can run all the way to zero and it usually happens after the boiler has been switched on and off by the timer not manually ????

 

[ChrisR]

Yes you will also have to clean things as S_W says
If you have "boiler pressure problems" ie going down to zero, see that topic in the Ref section.