How to mend ... Water Switched Heating

Vokera Maxin 28e combi boiler, DHW runs hot and cold?

A few months ago DHW temperature started to fluctuate mildly between hot and warm. This problem got worse so a... [Read more]

What's wrong with my Randall 102 timer unit, stopped working?

Unit was on water only for 2 weeks, switched back to water and heating and the dial is not turning around ther... [Read more]

why is pressure rising to 2.2 bar while heating is on ?

pressure rises to 2.2 bar after heating has been running for an hour. when heating switched off pressure stays... [Read more]

boiler Glow-worm30cxi 30cxi not working?

It had a red flashing light and f5 switched it off and back on now green flashing light 8.8 c bar no heating o... [Read more]

How can I fix my ideal isar he24?

Hi, the problem I'm having with the boiler this month is the excessive amount of time it taking to heat the w... [Read more]

biasi riva compact he mk2 m96a 28sm?

Hi, could anyone help please? My boiler started coming on at strange times in the evening on it's own. I the... [Read more]

Potterton Promax Combi HE Plus 28 nNo Central heating ?

System been switched to hot water only Now can't get Central heating to fire up. Thermostat not clicking. Hot ... [Read more]

empty header tank?

have a leak on a radiator so emptied the header tank and tied up the ball cock. Can I run just the hot water w... [Read more]

Why does pressure keep rising to 3 bar on Worcester Heatslave 20/25?

I have a 20 year old Worcester Heatslave 20/25. The heating and hot water are switched off. The pressure gauge... [Read more]

Glow-worm 30cxl?

Started off blowing 3amp fuse in boiler, water cold but heating working ok, engineer came out and fitted a ser... [Read more]

My Vaillant VCW GB 280 H combi-boiler, pump keeps running ?

The pump on my Vaillant some times keeps running after the heating and hot water demand have switched off? Th... [Read more]

Motorised valve for boiler?

I have a problem with my boiler- i only get hot water when the CH is switched on - i think the problem is with... [Read more]

Radiators upstairs will not go off after relighting Potterton Kingfisher ?

Hi, I have an old Potterton Kingfisher CF50 boiler. Yesterday we had no hot water so re-lit the pilot lig... [Read more]

Potterton Programmer not controlling stat?

I developed a fault on my Potterton system as a direct result of trying to change the in room stat (Potterton ... [Read more]

vaillant VUW 242e locked out?

as soon as boiler is switched on it goes to lock out immediately, pump runs, green light on, orange heating de... [Read more]

Worcester Bosh 24SI II?

When boiler initially switched on it ignites and the heating and hot water works. After about 5 minutes (has ... [Read more]

valient turbomax 242eh central heating will not operate once it reaches tem?

242 eh installed with 3 rads the boiler works fine in hot water when in ch and hot water mode ch reaches temp ... [Read more]

Potterton Netaheat - no heating without hot water?

Boiler will only fire up when "hot water" selected on controller (EP2002). When hot water is on, radiators al... [Read more]

amber light?

boss therm and new boiler fitted in april all well until last week red light on, radiators hot ,.water temp o... [Read more]

Vaillant Ecotec plus 824 with no central heating?

Please help!! We've been in this house for almost a year - so I'm not sure when the boiler was installed bu... [Read more]