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We have 74 questions about mending 'boiler hot demand central'

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Mend D.I.Y, Plumbing

no central heating on demand?

when i select CH boiler fails to ignite but when i select just HW i get hot water and central heating is th... [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

Worcester 24i RSF Junior - Water Flow Switch Melted!!?

Hi, had a few probs recently wi boiler, new Gas Valve & new PCB within last 2 months seemed to have sorted it.... [Read more]
Mend Heating, Home Heating Systems

worcester 350 combi boiler keeps tripping RCCB?

As soon as demand for either hot water or central heating is called for the RCCB in my consumer unit trips.Any... [Read more]
Mend D.I.Y, Plumbing

Valiant VCW GB221H does not fire on demand?

I have a combiboiler of the above model. It has been shut down for the past 12 months or so. I have flushed th... [Read more]
Mend Heating, Home Heating Systems

Vaillant VCW GB 242 E :- Failure to iginite when central heating demanded?

My Vaillant VCW GB 242 E Combi Compact Wall Mounted Boiler is failing to ignite when the central heating is sw... [Read more]
Mend Heating, Home Heating Systems

how can i repair my worcester 26cdi combi boiler?

the hot water and central heating are overheating and shutting the boiler down. when iether are called for on ... [Read more]
Mend Heating, Home Heating Systems

how can i fix my worcester 24cdi combi?

problem is no hot water from taps although my central heating works fine rads come on on all settings and boil... [Read more]
Mend Heating, Home Heating Systems

IDEAL ICOS HE24 BOILER IGNITION BANG?

Our HE24 Ideal condesating gas boiler is now 4 years old and has started to have a loud ignition bang when the... [Read more]
Mend Heating, Home Heating Systems

How can I fix my Worcester Bosch Combi boiler?

I have a 28cdi and when you run the hot tap the water gets hotter and hotter until the pilot cuts out. After a... [Read more]
Mend Heating, Home Heating Systems

How can I fix my Puma 100e combi boiler from constantly turning on and off?

I have monitored the running of the boiler for over 30 minutes and it fires up and stays on for 30 seconds the... [Read more]
Mend Heating, Home Heating Systems

Worcester GreenStarHE Combi Boiler: No Hot Water from Taps?

We have a Worcester GreenStarHE Combi Boiler (4 years old). Today, out of the blue, hot water no longer comes ... [Read more]
Mend Heating, Home Heating Systems

potterton puma 100e combi keeps locking out ?

the central heating works fine until hot water is called for then when demand ends sometimes the boiler boils ... [Read more]
Mend Heating, Oil Filled Radiators

worcester highflo 400 no heating?

my worcester highflo 400 combi gives me hot water but no central heating boiler fire for on demand water but n... [Read more]
Mend Heating, Home Heating Systems

Potterton Puma 80 - No hot water?

Potterton Puma 80 works fine with central heating, but without CH on, it does not produce hot water. At hot wa... [Read more]
Mend Heating, Home Heating Systems

heating no hot water?

haveing problems with worcester 24 si boiler working in central heating no problems but will not fire up on ho... [Read more]
Mend Heating, Home Heating Systems

Vaillant VCW GB 182E Combi Boiler?

The boiler provides hot water on demand but the central heating will not come on despite the boiler, thermosta... [Read more]
Mend Heating, Home Heating Systems

vokera 24e boiler doesnt relight?

Usually in the morning, central heating working fine. Then use hot water as normal, but once demand form hot w... [Read more]
Mend Heating, Home Heating Systems

Baxi combi 105HE boiler fault on the heating side?

I have a Baxi 105HE combi boiler. When the hot water is in demand the boiler will run ok no matter how many t... [Read more]
Mend Heating, Home Heating Systems

Baxi 105HE Heating fault?

I have a Baxi 105HE combi boiler. When the hot water is in demand the boiler will run ok no matter how many t... [Read more]
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