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We have 168 questions about mending 'boiler problem runs hot'

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Mend Heating, Oil Filled Radiators

No hot water Ferrior 102 combi boiler?

After returning from a few days holiday, I had no water at all. All the pipes were frozen but after heating th... [Read more]
Mend Heating, Home Heating Systems

BIASI Combi produces heating but no hot water?

I am at my mums and for weeks it would appear she has been living with this problem. The BIASI Combi runs the ... [Read more]
Mend Heating, Home Heating Systems

hot water goes cold ?

i have a vokera linea 730 boiler and the problem is ,in heating & hot water mode the hot water when switched o... [Read more]
Mend Heating, Home Heating Systems

Can I fix my own boiler?

Hi, can anyone advise on a problem with our boiler? The boiler is only used for heating our water and not any ... [Read more]
Mend Heating, Home Heating Systems

Worcester Highflow problem with hot water?

I am wondering whether anyone could advise of the likely cause of my Worcester Highflow combi boiler only prod... [Read more]
Mend Heating, Home Heating Systems

Ferolli SYS 10-23 Boiler runs continuously?

Hi there. I have a Ferolli SYS 10-23 gas boiler. The boiler is run from a Grasslin QE2 timer switch. Recentl... [Read more]
Mend Heating, Home Heating Systems

How can I mend my Danfoss thermostatic cylinder control valve?

Danfoss have just told me that my Thermostatic cylinder control 2 part valve and thermostat 22mm, gravity fed,... [Read more]
Mend Heating, Home Heating Systems

Worcester 19/24 CBi Constantly locking out?

I have a Worcester 19/24 CBi boiler (4 years old) which keeps locking out whenever I put the central heating o... [Read more]
Mend Heating, Home Heating Systems

Why is my water still to hot?

Previous Q & A :- I have a recently installed worcester 24i (LPG). The tap water gets very hot and after a wh... [Read more]
Mend Heating, Home Heating Systems

Intermittent hot water problem?

I have a worcester boiler (can't remember model name) which seems to have an intermittent problem where shower... [Read more]
Mend Heating, Home Heating Systems

luke warm water?

My Ferrolli Boiler dosn't have constant hot water,It runs hot then cold and every time I get into the bath it ... [Read more]
Mend Heating, Home Heating Systems

halstead ace bolier lockout problems?

the boiler has gone into lockout mode consistently, i have reset via the button underneath the boiler, runs fo... [Read more]
Mend Heating, Home Heating Systems

water runs hot then cold?

My Ferrolli Boiler is doing my head in the water runs hot then cold .ai was told by a plummer that it was my c... [Read more]
Mend Heating, Home Heating Systems

hot water but no central heating on cb28 alpha combi?

checked micro switch and removed and cleaned diverter value, boiler runs on heat and water.and stops on boiler... [Read more]
Mend Heating, Home Heating Systems

What is the problem with my baxi 105e instant, ?

In hot water mode everything seems to function as it should however when central heating is required the boile... [Read more]
Mend Heating, Home Heating Systems

heating probs?

I have a Chafetaux Britony combi boiler that works fine when you need hot water. The problem sarts when you sw... [Read more]
Mend Heating, Home Heating Systems

How can I fix my Valiant combi boiler?

I have a combi which is approx 10 yrs old, however it has developed a problem. On both heat & hot water it run... [Read more]
Mend Heating, Home Heating Systems

Problem with my Ferroli F30 boiler?

I have a Ferroli F30 boiler which is about 4 years old. It developed a problem a little while ago. When runnin... [Read more]
Mend Heating, Home Heating Systems

Ferroli Falcon II Ignition Wont Fire Up?

Hello. I have a Ferroli FER Falcon II Combi Boiler. The fan runs but the ignition does not fire up. However, I... [Read more]
Mend Heating, Home Heating Systems

sabere 25he died pcb change which one ?

Hi my boiler fitted last november so not even 1 year old . tried fault diagnosis fan runs pump runs no hot wat... [Read more]
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