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We have 458 questions about mending 'boiler combi turn hot'

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Mend Heating, Home Heating Systems

How do I rectify aU9 Code?

Worcester Bosch Greenstar 37CDi Combi showing code U9? My boiler is showing code U9, I know this means that th... [Read more]
Mend Heating, Home Heating Systems

Siemens RDH 10 RF Thermostat not triggering heating?

I have Siemens RDH 10 RF Thermostat and a Worcester Bosch Greenstar 30CDi combi boiler. The battery in the th... [Read more]
Mend D.I.Y, Plumbing

Bosch combi 28i junior no hot water/heating going off?

My Worcester Bosch Combi Boiler, 28i Junior, red light flashing. It comes on after about 5 mins of me having t... [Read more]
Mend Heating, Home Heating Systems

Heatline Monza 28A?

Hello I have a Heatline monza 28A combi boiler which I have just started to have problems with. The heating... [Read more]
Mend Heating, Home Heating Systems

Can't get hot water working, heating okay?

I've just moved house and have an Intergas Combi Compact Eco RF gas boiler with a separate Megaflow tank with ... [Read more]
Mend Heating, Home Heating Systems

worcester24i rsf?

worcester 24i rsf combi boiler.no hot water when i turn hot water taps on heating is ok
Mend D.I.Y, Plumbing

No water in parts of house?

Hi there, So last night we turned on an isolation valve so we could sort out the bathroom taps upstairs. When... [Read more]
Mend Heating, Home Heating Systems

why is my combi boiler not staying fired for central heating. water fine?

my Glow worm combi has been having odd days when the central heating isn't working but then has been ok again ... [Read more]
Mend Heating, Home Heating Systems

Baxi Combi 80e - Hot water Inconsistant?

I have a Baxi Combi 80e. I have an issue that the hot water doesn't run constantly when the tap is on and will... [Read more]
Mend Heating, Home Heating Systems

Boiler needs kick started by hot water for heating?

We have a Combi boiler controlled by a Hive thermostat. The scenario is that you get up in the morning and th... [Read more]
Mend Heating, Home Heating Systems

How to fix my Potterton Promax Combi HE Plus boiler?

I have no heating or hot water, when I turn on the central heating or a hot water tap the boiler fires up then... [Read more]
Mend Heating, Home Heating Systems

micro switch on a potterton combi boiler?

hi can anyone tell me how do you know if the micro switch on my boiler is working? i am getting hot water but ... [Read more]
Mend Heating, Home Heating Systems

Worcester greenstar combi boiler not heating above 35C?

I have a new Worcester Bosch 30i combi boiler which was installed a couple of months ago, but I just can't see... [Read more]
Mend Heating, Home Heating Systems

fialure of central heating ?

hi I have a halstead hi ace combi boiler the central heating was going off after around a hour though on overr... [Read more]
Mend Heating, Home Heating Systems

Firebird enviromax c26 hot waterissue?

Hello, I have a combi oil boiler which is a c26 firebird enviromax, installed roughly two years ago, the hot w... [Read more]
Mend Heating, Home Heating Systems

baxi 105 combi problem?

Hello. i have a baxi 105 combi boiler. works fine on hot water, when turn on heating works fine. but when i tu... [Read more]
Mend Heating, Home Heating Systems

Any ideas on how to fix my Ferroli Optimax HE Plus 31 C combi boiler?Ferrol?

Ferroli Optimax HE Plus 31 C 3 years old from new. Have heating but no hot water, when I turn on hot tap the D... [Read more]
Mend Heating, Home Heating Systems

Fault finding with halsted high ace combi?

The problem seems to be, when you use the hot water the boiler will not turn on or turns on but halfway throug... [Read more]

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