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We have 73 questions about mending 'central heating works hot water cold'

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Mend Heating, Home Heating Systems

Hot water problem in my combi boiler?

My combi boiler works fine in central heating mode. When in hot water mode, however, it fires intermitently so... [Read more]
Mend Heating, Home Heating Systems

central heating Works but no hot?

Central heating works, boiler on, power on, all ok from tank (system mate) there are 2 pipes 1 label hot wat... [Read more]
Mend Heating, Home Heating Systems

no hotwater on worcester 24cdi ?

My central heating works ok but when I come to run the hot water for a bath the light indicator (red) does not... [Read more]
Mend Heating, Home Heating Systems

my Powermax 155x combi boiler has high pressure?

i get hot water and the central heating works but the pressure keeps rising and i have to turn the boiler off.... [Read more]
Mend D.I.Y, Plumbing

I have no water at all the my upstairs bathroom?

I have full hot and cold water downstairs, but nothing at all to the upstairs taps shower or toilet. I have a... [Read more]
Mend Heating, Home Heating Systems

heat line c28 boiler?

The boiler works fine with the central heating but when it comes to the hot water it fires for only about five... [Read more]
Mend Heating, Home Heating Systems

Halstead Ace High boiler central heating cuts out before thermostat tempera?

Hi, my Halstead Ace High boiler central heating cuts out before thermostat temperature. Hot water works fine a... [Read more]
Mend Heating, Home Heating Systems

worcester bosch boiler - pressure problems?

COLD- pressure is less than 1. demanding hot water trips the boiler. I turn the central heating on and the... [Read more]
Mend Heating, Home Heating Systems

vaillant ecomax 824e flashing e20,e13,f20. How to fix it?

Thing is, that my boiler (which is vaillant ecomax824e) use to go through these codes e20 and then f 20, or e1... [Read more]
Mend Heating, Home Heating Systems

No Hot water from combi?

I have a 10 year old Vokera Linea 28. I have no hot or cold water coming through the taps at all. The central ... [Read more]
Mend Heating, Home Heating Systems

My Potterton 80e often doesn't start up anyone know why?

My Potterton 80e gas central heating and hot water boiler often won't fire up on its own . We tend to have ... [Read more]
Mend Heating, Home Heating Systems

No hot water but heating still works?

I'm using a Potterton Neataheat 10-16 when I switch on the Central Heating the Boiler fires up as normal the R... [Read more]
Mend Heating, Home Heating Systems

Potterton Puma 100 - slow hot water supply?

Have a Potterton Puma 100. central heating works fine but when drawing hot water it remains cold/cool until ra... [Read more]
Mend Heating, Home Heating Systems

Boiler not heating water correctly?

I have a Ferroli Optimax HE 31c Combi-Boiler, since it has been installed the boiler has not heated the water ... [Read more]
Mend Heating, Home Heating Systems

Boiler stays Lit but look warm?

I have a modena 102 combi and have just put in new heat sensors for for the CH and DHW as the flame kept going... [Read more]
Mend Heating, Home Heating Systems

Ravenheat RSF 100ET dhw ?

domestic hot water goes hot then cold, central heating works ok, 3 way valve appears to be working ok. where w... [Read more]
Mend Heating, Home Heating Systems

No water running from hot tap?

I have no water symbol on my Vaillant Eco Plus boiler and when the hot water tap is turned on no water runs fr... [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

worchester 240, pressure dial reads same hot or cold?

my worchester bosch 240, works fine, but for the pressure dial does not move from 2.9 weather central heating/... [Read more]
Mend Heating, Home Heating Systems

problem with boiler?

Hello, i have a Biasi 24s boiler. The central heating works fine but when i turn my hot water on, the water ve... [Read more]
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