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We have 448 questions about mending 'hot system central'

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Mend hot water ferroli system

How can I fix the hot water and heating problem with my Ferroli Domina 80E?

I have a Ferroli Domina 80E, it is an older combination system. The hot water comes on when the hot tap runs, ... [Read more]
Mend water boiler bled

Strange Goings On with Boiler:Pressure Surging to 3+ when Hot Water Goes On?

Strange Goings On with Boiler: Pressure Surging when Hot Water Goes On I bled my radiators a few days ago... [Read more]
Mend potterton ii heating

Potterton Flamingo II, hot water is fine but central heating doesnt ignite?

Hello I have a Potterton Flamingo II. The hot water option works no problem, but when I select either wate... [Read more]
Mend water pressure vaillant

correct water pressure in a vaillant turbotec central heating gas boiler?

i have a vaillant gas central heating system with 10 radiators and i was wondering what would be the correct p... [Read more]
Mend combi working kitchen

Potterton Promax combi not working after re-pressurisation?

We had a new kitchen fitted in summer which meant the removal of a radiator. The workmen replaced it but never... [Read more]
Mend cylinder hot heating

Primatic Cylinder, no hot water C, heating OK how can I fix?

Primatic Cylinder: Central Heating works OK, but no hot water top pipe enntering ciylinder ( heat exchanger c... [Read more]
Mend heat degrees heating

Radiators heat to over 120 degrees Fahreheit, is this normal?

My central heating is heating up to what I believe is a dangerous level. I am worried my little boy will burn ... [Read more]
Mend baxi inset boiler

Spring pressure valve on an open vented system?

I have an open vented system with Baxi bermuda inset 2 back boiler (10 years old), indirect water cylinder (gr... [Read more]
Mend help heating hw

Potterton EP2000?

-------------------------------------------------------------------------------- Hi, i am desperate for some ... [Read more]
Mend we think we hot

We think we have an airlock in our hot water system?

We drained our central heating system down, and now having apparently filled it up again the boiler is working... [Read more]
Mend years heating water

Worcester Bosch Oil Heatslave 20/25 two years old?

Can not get the central heating to work; the water pump does not seem to be running. Hot water fine. Had a lon... [Read more]
Mend worcester 24i couple

Worcester 24i?

Hi drained down the system to repair a couple of weeping radiators, refilled the system to 1.5 bar vented all ... [Read more]
Mend pressure 30 he

Fault on Pump/Low Pressure - Potterton Performa 30 HE?

Our heating system (Potteron Performa 30 HE) is giving a fault saying 'fault on pump low pressure', which basi... [Read more]
Mend works fine apart

I have a Ravensheat condensing boiler 85T (I think), ?

It was installed in August last year and works fine apart from when you put the central heating on, it ignites... [Read more]
Mend central system hot

Operating Instructions?

Does anyone know where i can get operating instrucions for a Landis & Gyr central heating/hot water system? I ... [Read more]
Mend tank hot water central heating

tank of hot water but no central heating?

the hot water switch starts everything working and heats a tank of water, plus one radiator! however, the cent... [Read more]
Mend worcester combi boiler

Worcester combi 440 boiler?

I got an 18 month boiler which was working ok till few month ago. I noticed that the pressure is dropping and ... [Read more]
Mend heating control water

kingfisher mf gravity hot water/pumped central heating system?

how to control hot water in domestic water
Mend central heating radiators

How can i fix low water in my boiler/air in my central heating system. ?

I've had plumpers to fix a leaky pipe but since then cannot get the radiators to work even though i still have... [Read more]
Mend potterton performa 24

how to fix potterton performa 24?

boiler continues to burn,bypassing all instruction to do otherwise.ive tried resetting but again the boiler ju... [Read more]
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