Old potterton will not ignite

[bigandy658]

Good morning all, i have an old potterton boiler (sorry dont no the modle there are no signs of it anywhere) and the piolt light is on but when i turn the thermostste up and put the timer on constant it does not fire up.

 

[twgas]

does pump work

If you have motorised valves, are they/it working

is there power to boiler

does it have an overheat

 

[bigandy658]

hi thanks for the quick response. yes the pump is working and my mate told me to listen the the silver valve and it makes a noise when i turn from hot water to heating

 

[twgas]

can you test for 240v coming in to boiler, also to gas valve when thermostat is turned up

 

[bigandy658]

with my tester where do i test on the valve please

 

[bigandy658]

hi mick, yes there is 240 at the gas valve. my screw driver lite up

 

[twgas]

then it may well be gas valve nakkered, corgi job touching those.

 

[bigandy658]

thank you for your help

 

[Vic Spanner]

Just because your screwdriver lite up does not mean there is 240v. Make sure it is tested with a proper meter...Only trying to help

 

[bigandy658]

i have just found out that the 3 way valve is not working would this stop the boiler firing up

 

[sbgasman]

no if you have 240v at gas valve and it does not fire up it is a faulty gas valve

 

[bigandy658]

hi there is power there but before i mentined the 3 way valve was working but its not will this stop the boiler fireing

 

[sbgasman]

live goes clock-room stat-3way valve-boiler stat-gas valve so if you have 240v at gas valve it is faulty