How to mend ... Calling Heat Hot

Glowworm 50FF cycles when system not calling for heat/water?

I have a Glowworm 50FF boiler. When the system is not calling for heat or hot water, ie. timer off and both mo... [Read more]

Hot water prob - Vaillant Turbomax Plus?

For about the last 6 weeks or so our hot water temp has been very unstable. The boiler fires and heats wat... [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]

How can i fix my Glow Worm Space Saver 20 - 30F?

If i blow into the APS (via restrictor) the boiler lights up, heats and runs for about 5 minutes but will not ... [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]

Ravenheat bolier CSI 85T will not light up with wireless controler?

Ravenheat Boiler will only fire up and give hot water when hot tap is opened, central heating will not fire up... [Read more]

sime format 80e fires on and off for 8 seconds continous?

Sime format 80e fires on and off for 6 seconds continous when radiators calling for heat or hot water.Every th... [Read more]

sime format 80e fires on and off for 6 seconds continous?

sime format 80e fires on and off for 6 seconds continous when radiators calling for heat or hot water.every th... [Read more]

vokera combi linea 28?

when calling for heat or hot water boiler burner comes on for a few seconds then shuts down this continues why... [Read more]

glow worm 50?

i have glowworm micron 50works ok when it calls for hot water but will not always fire up for central heating ... [Read more]

Glowwork Ultimate 50 boiler - pilot keeps going out?

The pilot light keep going out but immediately relights itself so I am getting hot water and heating. I have h... [Read more]

Potterton Suprima/Suprima L. constant central heating?

We cannot get our central heating to switch off unless we switch off the boiler. When calling for hot water on... [Read more]

how to fix my vaillant 242 e-h combi(fires up when not req)?

My boiler fires up every couple of minutes for about 10 seconds then shuts down again,there is nothing in the ... [Read more]

How can Ifix my Vokera 12-48 RSE Mynute Combi boiler?

When the power is switched on with the thermostat calling for heat, the fan immediately comes on but the boile... [Read more]

back boiler problem?

hi have just moved into an old house with a back boiler and storage tank. not getting any hot water and when c... [Read more]

Ravenheat CSI 85AT boiler tripping problem?

Ravenheat condensing combi boiler CSI 85AT fault? My 1.5 year old boiler has developed a random & intermitt... [Read more]

Ravenheat condensing combi boiler CSI 85AT fault?

My 1.5 year old boiler has developed a random & intermittent tripping fault, in both modes of heating (i.e. CH... [Read more]

vokera mynute 14se?

my boiler fire's up when not calling for heat or hot water and my pump is always runing, engineer has changed ... [Read more]

hot water on Sime 80E Combi boiler?

what is likely problem with Sime 80E Combi boiler only giving hot water if room thermostat is calling for hea... [Read more]

radiators coming on when not needed?

my cental haeting ia playing up , i think th esyncro motor is perhaps sticking ie not fully shuting off heatin... [Read more]