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We have 351 questions about mending 'cold radiators hot'

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Mend Heating, Home Heating Systems

Cold radiators Ferroli Optimax 25c?

My newly installed combi gives instant hot water from the tap but I have to turn my room stat up to 30 before ... [Read more]
Mend Heating, Home Heating Systems

Only cold water from hot tap?

I have a Myson boiler with hot water tank - tank has two pumps one for rads and one for hot water - both worki... [Read more]
Mend Heating, Home Heating Systems

iv got a problem with my alpha combi boiler?

the pressure kept going up on my alpha combi boiler, the plumber said it was due to a leaky valve on the filli... [Read more]
Mend Heating, Home Heating Systems

Radiators suddenly gone cold!!!?

I'm at my wits end!!! This is now my third posting about this and I really think I'm going to scream! 2 out of... [Read more]
Mend Heating, Home Heating Systems

Radiators suddenly gone cold?

This is my second question about this, sorry. I have 8 radiators in my house, two of which are open. Very re... [Read more]
Mend D.I.Y, Plumbing

Radiators are cold at the bottom?

I have a problem with some of our central heating radiators on the ground floor only getting hot from halfway ... [Read more]
Mend Heating, Home Heating Systems

Central Heating Control?

Every ten days or so the central heating system ignores the programming set into the clpock programme. It rem... [Read more]
Mend Heating, Home Heating Systems

Intermittent Fault Vaillant turbomax VUW 242E?

How can I fix my Vaillant Turbomax VUW 242E? My boiler is 8 yrs old. The flame indicator illuminates but th... [Read more]
Mend Heating, Home Heating Systems

hot water runs cold?

My hot water runs cold and only runs hot when the radiators are working. What is wrong with my boiler?
Mend Heating, Home Heating Systems

not working?

my pump,pilot and everything seems to work,but as soon as my radiators get hot the system seem to continue to ... [Read more]
Mend Heating, Home Heating Systems

Central Heating System?

I fitted a new pump to the central heating pump a few weeks ago. Now the radiators are hot but the water is co... [Read more]
Mend Heating, Home Heating Systems

Radiator problems?

Hi all, i have a valliant combi boiler no mod number the central heating system running my radiators, the wat... [Read more]
Mend Heating, Home Heating Systems

gas central heating, 2 radiators cold, any ideas?

The combi - boiler seems fine, 4 radiators working fine, hot water also fine. 2 radiators stubbornly stone co... [Read more]
Mend D.I.Y, Plumbing

Water in cylinder not getting hot?

Similar question to one already posted. My system is vented indirect, and although the radiators are getting h... [Read more]
Mend Heating, Home Heating Systems

What's wrong with our boiler?!?

We have an old-ish Potterton Flamingo boiler that we inherited when we bought our flat 3 1/2 years ago, it isn... [Read more]
Mend Heating, Oil Filled Radiators

i have a vaillant ecotec boiler the rads com on but the water is cold help?

i have a vaillant ecotec 824R1 or B24R1 the radiators come on hot but the water is cold help please its a new ... [Read more]
Mend Heating, Home Heating Systems

myson velaire standard domestic oil boiler keeps cutting out?

AFTER INITIAL START UP THE BOILER KEEPS CUTTING OUT. THE WATER RUNS COLD BEFORE BURNER STARTS AGAIN, RADIATORS... [Read more]
Mend Heating, Home Heating Systems

Potterton Profile 30E keeps tripping on Central Heating?

My Potterton Profile 30E keeps tripping off and requires the reset button to be pressed to restart. This typic... [Read more]
Mend Heating, Home Heating Systems

Fault with Ravenheat Combi boiler (heating goes off)?

I have a Ravenheat Combi boiler which provides hot water ok. However, when the central heating is switched on,... [Read more]
Mend Heating, Home Heating Systems

Bosch Combi boiler 240 ignites and burn gas - no hot water at all?

Hi I have a Worcester Bosch 240i Combi boiler the electronics seems to work fine. When open tap it ignites... [Read more]
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