Worcester 350 CH problem

[nv_london]

When I switch the CH on, the boiler fires up and the radiators get hot, however, after a min or so, the pressure gauge rises very quickly from 1.3 to 2 bar at which point the boiler switches itself off and doesn't come back on (unless I switch the whole thing off and re-start. On doing so, the whole cycle is repeated). - By the way, HW is fine.

Just wondering if anybody had any ideas?

Many thanks.

 

[buck51]

check out your expansion vessel you will find the info to do that in f a q[/b]

 

[nickso]

why are you starting another thread? we have already told you to check your thermistor and if thats ok its most likely the anticycle delay on the pcb being faulty.

 

[nv_london]

Sorry, I should have mentioned that I changed the thermistor but this hasn't helped!

If it were a faulty 'anticycle delay' would the whole PCB require replacing?

Thanks.

 

[nickso]

If it were a faulty 'anticycle delay' would the whole PCB require replacing?

.

yes

 

[Agile]

Unless you are clever enough to know which part on the PCB is at fault and repair it!

Tony

 

[nv_london]

thank you.