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We have 138 questions about mending 'boiler heat water thermostat'

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Mend Heating, Home Heating Systems

Boiler switches off water heating when the central heating is due to come o?

When the heating is timed to come on the light flashes but no heat appears and at the same time the water ceas... [Read more]
Mend Heating, Home Heating Systems

ideal classic boiler?

my ideal classic boiler ff270 fires up even when no heat is called for. i.e. when the programmer for the ch an... [Read more]
Mend D.I.Y, Plumbing

Would router interfere with wireless room thermostat?

Our room thermostat ( Honeywell) has ceased to communicate with our boiler.This coincides with having a router... [Read more]
Mend Heating, Home Heating Systems

No heating, but hot water. Boiler tells me there is ' NO demand for heat'?

I have a Vaillant ECOtec plus combination boiler. I rang Vaillant and they asked me to make various checks. T... [Read more]
Mend Heating, Home Heating Systems

How can I make the central heating start?

What does the code d2 mean on the ferroli optimax HE31C combi boiler? The hot water works well. We have put ... [Read more]
Mend Heating, Home Heating Systems

Thermostat not triggering my boiler?

The boiler is firing up as normal to heat the water tank, but its as though the thermostat is telling the boil... [Read more]
Mend Heating, Home Heating Systems

wireless thermostat not triggering boiler?

last winter I had fitted a new boiler. They also put in a wireless thermostat. It worked fine and hten I tur... [Read more]
Mend Heating, Home Heating Systems

Vokera 20-80 r.s flowmatic?

Hi all I am struggling, i have moved into a rented house with the above boiler. I seem to have to have the h... [Read more]
Mend Heating, Home Heating Systems

Hot Water but no CH Potterton Netaheat Profile 30e-80e?

In the last day or so we have noticed that we are getting hot water but no Central Heating (rads are cold etc.... [Read more]
Mend Heating, Home Heating Systems

grant 70/90 outdoor, sealed system boiler?

I have been losing pressure and some water from system for some time now could'nt find a leak any where indoor... [Read more]
Mend Heating, Home Heating Systems

boiler will not start up automatically when the room thermostat is asking f?

boiler is running fine producing hot water and heat, but when the room thermostat asks for heat the boiler wil... [Read more]
Mend Heating, Home Heating Systems

worcester bosch combi?

i have a worcester bosch greenstar combi boiler, when i turn the hot taps on it takes ages to heat the hot wat... [Read more]
Mend Heating, Home Heating Systems

Glowworm Spacesaver KFB 50 fires up without water or heat called for?

Have had the programer replaced, motorised valves are working correctly (supposedly) Immersion tank thermostat... [Read more]
Mend Heating, Home Heating Systems

ICOS HE15- Boiler ignition banging?

Have Icos HE15 boiler. 2+ years old. Regularly serviced. Works OK on heating + hot water but has a problem wit... [Read more]
Mend Heating, Home Heating Systems

honeywellST6300A?

just moved to new property have set the timer, put thermostat to 24 degrees but heating is not working. The bo... [Read more]
Mend Heating, Home Heating Systems

My Worchester 24i RSF stopped giving heat to radiators & intermittant water?

Had a room thermostat on the boiler, heating was fine but hot water was intermittant and kept running cold. I... [Read more]
Mend Heating, Home Heating Systems

Boiler Problem?

I have a Glow-Worm Ultimate 120FF central heating boiler that stopped working last week. Under my Direct Line ... [Read more]
Mend Heating, Home Heating Systems

Ferroli combi not responding to thermostat?

I have a 3 year old Ferroli combi gas boiler. A couple of years ago it stopped responding to commands from the... [Read more]
Mend Heating, Home Heating Systems

Ravenheat RSF 84ET - not heating rads or water?

Good Morning guys, I am looking for some advice regarding my girlfriends Ravenheat RSF 84ET combi bo... [Read more]
Mend Heating, Home Heating Systems

radiators not coming on ?

I've had an engineer out to my house a few times about this problem but still no joy so hopefully you can give... [Read more]
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