Potterton Puma 80 Problem

[googlebox999]

Hello all,

I have an old Potterton Puma 80 boiler that could do with replacing, but generally works fine.

I came back from 5 days away to find that the pilot light was out and system pressure was very low. This morning I re-pressurised the system to 1.5 Bar but the pilot would not light despite many attempts. Put pressure up a bit higher to 2 Bar and it lit fine.

However, the burners will not light, for central heating nor hot water. I can hear the pump whirring away but nothing comes on and the water pressure in the system drops steadily. In the last five minutes it has reduced right back down to 0.5 Bar.

Any ideas of things I can check myself before I call in a plumber?

Thanks

 

[googlebox999]

Update: have noticed that a pipe leading from the boiler outside (is this an overflow?) has a constant trickle of water coming out of it.

 

[gasmarc]

do not put more than 1.5 Bar in it anytime , the boiler will not function correctly until this PRV is repaired or replaced

 

[Puddle]

There is not a lot you can do yourself am afraid

Looks like system pressure low and maybe over heated ,taking pilot out,or maybe fan not staying on low speed,without pilot you will not have a working boiler and p/r valve will require sorting and maybe expansion vessel pumping up,boiler getting old ,so good service probably required also,time to get a gas safe plumber in

 

[gasmarc]

Great advice as usual but fixable I would think with an engineer that knows pumas