How to mend ... Cylinder Stat Cylinder Stat

Pump runs continuously?

I have a Potterton Suprima boiler with a Megaflow unvented mains pressure water heater. The pump has been runn... [Read more]

A problem with my heating controls?

I have a Potterton Suprima 60 with an EP2001 programmer fully pumped system with 2 MVs,the problem is that whe... [Read more]

water is too hot?

my hot water is too hot.i have fitted a new cylinder stat and set it at 50 deg but the water is still too hot,... [Read more]

heating?

ClassicFF boiler periodically kettles and occassionally pumps over. New pump fitted, Cylinder stat, roomstat ... [Read more]

no heat to the radiators?

my boiler works triggered by either the room stat or presumably the cylinder stat for the hot water; but no he... [Read more]

problem with mid position valve? ?

I hope someone can clarify if I have diagnosed the fault that I think Ive got. A few days ago the central h... [Read more]

not going to mid position on valve?

when I replaced the actuator on the mid position valve and controler I found that I could get heating and i co... [Read more]

Heating boiler through the programmer is on hot water ok no heating to rad?

Boiler operates in the hotwater mode, put the switch over to the heating,no heating,room stat on max, 3 port v... [Read more]

need a wiring diagram for a main he boiler?

i got a main he system boiler. but it's only got combi connections. so how do you wire in the vales, programer... [Read more]

problem with potterton kingfisher II CF40?

Hi all, Hope someone can help, I have a pott kingfisher II CF40, floor standing, gravity fed i believe, as i c... [Read more]

Hot rads?

The c/heating boiler has just had it's annual inspection by British Gas and the engineer checked all rads and ... [Read more]

potterton profile 40e can't be controlled by programmer?

The boiler is working and provides both hot water and heating but runs continuously, even with the programmer ... [Read more]

Any idea how much a new diverter valve or cylinder stat. costs (approx?)?

How much could I expect to pay (approx) for a diverter valve or cylinder stat for a heating system - parts not... [Read more]

Why is there hot water but no heating?

I have a glowworm micron 40ff boiler,when hot water is selected on programmer the boiler fires up,but before t... [Read more]

Glow worm ultimate 40ff ultrahot water!!!!!?

Hi, I have the above boiler with potterton ep3002 timer and potterton room stst with hot water cylinder stat ... [Read more]

Boiler fires up when demand for hot water but doesn't when demand for C/H?

I have a Potterton Netaheat Profile 80e boiler, Honeywell V4073A mid-position valve, Honeywell ST699B programm... [Read more]

baxi 100 he system fault?

boiler reaches temperature but but pump stops after aprox 2 minutes will not come back on as no water circulat... [Read more]

How can I fix my wiring in my tank cupboard ?

I need a wiring diagram on the correct way to wire up a motorised valve, a pump and a cylinder stat as the plu... [Read more]

Sime Superior 50 heating not working?

We have a Sime Superior 50 boiler which lights up every now and then. The Pilot is alight. Fan seems to be w... [Read more]

Potterton Netaheat 60E?

Boiler stays on even when time for water is off. I have replaced the cylinder stat, have replaced the return v... [Read more]