potty potterton

[spaglemon]

hi all , i have a potterton puma 100 which i have just replaced the pump on , i put in some system cleaner and sludge remover , i have removed all radiators individually and flushed them through , and after putting everything back together i still have the same symptoms which are that the hot water works fine but if i put on the heating side the boiler fires up for about 20-30 seconds and then shuts down , however if i leave it set to constant it fires up every so often for 20-30 seconds then goes off again 3-4 hours later it comes on and works fine with all radiators piping hot , if anyone has any ideas i'd really appreciate a reply

just an update i've just had the diverter valve head out and it was very cruddy inside have cleaned it up and re-installed it but there is no change , could it be a thermostat ?

thanks

craig

 

[gas_man_gaz]

the wax capsule, really common fault.

 

[steve32]

replace the diverter valve it's not opening on heating

 

[gas_man_gaz]

don't!!!! it's alot more expensive n a t.w.a.t to do! just change the wax capsule

 

[kevplumb]

could always try the blowlamp test

 

[spaglemon]

do you mean heating up the front part of the diverter valve ? if so how much should it need to be heated ? the back end of it is hot but the front end is cool is this normal ?

thanks for the replies

 

[gas_man_gaz]

 

[Soggy_weetabix]

the wax capsule, really common fault.

I agree entirely, and I now have 610 of them! Guess I wont need to order them again in a hurry.

Dave

 

[spaglemon]

can anyone recommend the cheapest place to buy a wax capsule for my potterton puma 100e ? by what i've seen prices seem to vary quite a bit


cheers

 

[spaglemon]

just wanted to let everyone know that my boiler is now working perfectly after replacing the wax capsule as suggested , thanks very much to everyone that offered advice


cheers