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We have 448 questions about mending 'central system hot'

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Mend Heating, Home Heating Systems

Can I change a radiator valve without draining the system?

Hi, I have an old gravity hot water pumped heating system, the boiler is a reliable, but expensive, Vulcan Con... [Read more]
Mend Heating, Home Heating Systems

Poor hot water temperature with heating on?

I have a Vaillant Turbomax combination heating boiler. When the central heating is operating & a hot tap is... [Read more]
Mend Heating, Home Heating Systems

hi,have a worcester 24i boiler,10 years old?

when central heating running shower goes up and down in heat every few minutes.shower is mixer off hot/cold pi... [Read more]
Mend D.I.Y, Plumbing

Bolier does not heat up hot water?

I visited my parents over the weekend and noticed that there was a loud grinding type noise coming from their ... [Read more]
Mend D.I.Y, Plumbing

Low hot and cold water pressure?

Hi, can anyone help me??? I have recently put in a new kitchen and two new bathrooms in my house, and now havi... [Read more]
Mend Heating, Home Heating Systems

Glow Worm Compact 75p pressure build up?

When i turn on my central heating after about 15/20 mins when the system and radiators are hot the pressure ga... [Read more]
Mend Heating, Home Heating Systems

ferroli 80e says no not enough pressure in system yet there are 1.5 bars?

ferroli modena 80e says not enough pressure in system, yet pressure reads 1.5. No central heating or hot water... [Read more]
Mend Heating, Home Heating Systems

vokera option boiler?

Hi All Can anyone help me out here please i have a vokera option the boiler was working fine all i have ... [Read more]
Mend D.I.Y, Plumbing

radiators cold upstairs, hot downstairs?

Hi, I have a problem with my heating system. With Central heating on,radiators upstairs are cold & radiators... [Read more]
Mend Heating, Home Heating Systems

Ferroli optima 701 (combi boiler)?

The water pressure in the boiler creeps up to 3 bar, I have previously reduced the pressure in the system by d... [Read more]
Mend Heating, Home Heating Systems

Central Heating Problem - Potterton Flamingo 50?

I have a Potterton Flamingo 50 boiler, which caters for the central heating aswell. My radiators upstairs all... [Read more]
Mend Heating, Home Heating Systems

Baxi SOLO, New Fitted in 1991- pilot lights but will not stay on?

The hot water and central heating system was operating as normal but then we noticed that the hot water had go... [Read more]
Mend Heating, Home Heating Systems

Britony Combi Se loss of pressure?

Hi, I have a Britony Combi SE boiler (an 80 I think) and I am losing pressure from the central heating side. I... [Read more]
Mend D.I.Y, Plumbing

Puma 80e downstairs radiators cold upstairs very warm?

Hi i have a Potterton Puma 80e combi boiler. With the central heating on the upstairs radiators are getting ve... [Read more]
Mend Heating, Home Heating Systems

how to get my radiators hot?

When my central heating system is on my radiators only get luke warm, even if the room thermostat is on full, ... [Read more]
Mend Heating, Home Heating Systems

Central Heating comes on with hot water?

I have a Landis and Gyr electronic timer (seems fine) attached to a boiler which provides hot water via a hot ... [Read more]
Mend Heating, Home Heating Systems

Worcester 28i Junior Banging when CH fires up and scale in hot water?

Our boiler is just over two years old and has been playing up for nearly a year. The hot water is fine, but wh... [Read more]
Mend Heating, Home Heating Systems

how can I fix my ravenheat combi white star LST80?

when I switch the central heating on it does work but the pressure guage goes up and when it stops the pressu... [Read more]
Mend Heating, Home Heating Systems

MY IDEAL BOILER KEEPS LOSING PRESSURE?

I SET THE PRESSURE GAUGE TO 1.5 BAR AND WHEN THE HOT WATER IS USED IT IS FINE, BUT AFTER THE CENTRAL HEATING S... [Read more]
Mend Heating, Home Heating Systems

baxi solo wm 50/rs upstairs rads only getting warm?

I have flushed central heating system out. when boiler fires up it stays lit for about 1 min then stops, light... [Read more]
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