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We have 206 questions about mending 'boiler running central heating'

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Mend Heating, Home Heating Systems

Worcester boiler 35CDi?

What can be wrong with my boiler? I first noticed a problem when my shower began running hot then cold, hot th... [Read more]
Mend Heating, Home Heating Systems

Boiler Hot water intermittently losing temp, Heating seems fine?

The title explains the main issue, for some reason the hot water drops often every 20 secs or so, sometimes it... [Read more]
Mend Heating, Home Heating Systems

How do I reset my wireless Siemens RDJ10RF thermostat?

"I have a wirelss Siemens RDJ10RF thrmostat with RCR10/433 receiver.""The lights on the receiver have gone out... [Read more]
Mend Heating, Home Heating Systems

my Ravenheat 820/20 combi keeps overheating?

when the boiler powers up on central heating the boiler keeps running and makes the water presure go above 3 b... [Read more]
Mend Heating, Home Heating Systems

Vokera boiler problem?

Central heating works fine but the hot water is a nightmare, can start hot but then runs cold I may be mistake... [Read more]
Mend Heating, Home Heating Systems

Potterton Programmer not controlling stat?

I developed a fault on my Potterton system as a direct result of trying to change the in room stat (Potterton ... [Read more]
Mend Heating, Home Heating Systems

How can I get rid of trapped air in central heating system?

After replacing the small rubber seal on the shaft of the hydraulic actuator in my BIASI 24S Combi boiler, the... [Read more]
Mend Heating, Home Heating Systems

How can I fix my Saunier Duval Semia Condens boiler?

The Central Heating (CH) side works perfectly but the Domestic Hot Water (DHW) has developed a problem, thus..... [Read more]
Mend Heating, Home Heating Systems

baxi combi 80eco?

Hi I have a baxi combi 80 eco boiler. The system preasure was too high on examination but has now been bled an... [Read more]
Mend Heating, Home Heating Systems

How can I fix my Vaillant Turbomax Plus combi boiler?

Have recently drained and refilled system. Turned boiler on and after an hour or so pressure was around 2 bar,... [Read more]
Mend Heating, Home Heating Systems

Vokera Compact 24 Fault?

No Central Heating or Hot Water The red light and fan are running constantly even when the switch on the fron... [Read more]
Mend Heating, Home Heating Systems

Worcester Bosch 25si not igniting?

Due to the recent very wet weather and strong winds, my boiler has gone into fault with flashing red light, I ... [Read more]
Mend Heating, Home Heating Systems

alpha boiler - hot water ok but only slight central heating ?????????

boiler is lighting and giving good hot water but the central heating is just lookwarm even after 3 or 4 hours ... [Read more]
Mend Heating, Home Heating Systems

potterton boiler?

why does potterton performa 24 boiler pump keep running on even when taps are turned off used only for hot wat... [Read more]
Mend Heating, Home Heating Systems

worcester 28cdi hot water but no central heating?

No problems running hot water but when central heating is switched on boiler momentarily switches on then shut... [Read more]
Mend Heating, Home Heating Systems

How can i fix my potterton combi 80?

My problem is when i switch the water on it takes ages for the flame to ignite, once it ignites it only stays ... [Read more]
Mend Heating, Home Heating Systems

halstead ace high boiler problem?

after my son has spent 20mins or so in the shower,shortly after there is a hissing sound, and hot water comes ... [Read more]
Mend Heating, Home Heating Systems

Central heating stops after about 2hrs running?

I have an Ideal Mexico Super RS 80 boiler which seems to run the heating system for about a couple of hours wh... [Read more]
Mend Heating, Home Heating Systems

Glowworm Flexicom F1 F4 faults?

Having a problem with boiler cutting out. NOT a condensate problem. Key bit of information is that it will run... [Read more]
Mend Heating, Home Heating Systems

What does the error code "L.E."mean on an isar HE24 combi boiler?

Some times when the boiler is running on central heating,the cut out opperates and L.E.flashes.Nothing works u... [Read more]
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