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We have 325 questions about mending 'boiler running cold'

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Mend Heating, Home Heating Systems

boiler stopped heating water (baxi 105e)?

water went cold during shower,heating is ok but when i try running the hot water the hot water neon does not ... [Read more]
Mend Heating, Home Heating Systems

how to fix my vaillant turbomax plus 282/2e combi?

re: vaillant turbomax plus 282/2e combi boiler. Problem with c.h coming on when internal timer in 'off' and ro... [Read more]
Mend Heating, Home Heating Systems

How can i fix my worcester 24 i combi boiler?

I had my central heating on and at the same time started running a bath when the water suddenly started runnin... [Read more]
Mend Heating, Home Heating Systems

sabre 28 - continious hot water?

i have a sabre 28 combination boiler which is giving me problems running continious hot water. Water runs cold... [Read more]
Mend D.I.Y, Plumbing

Water going cold for 10 secs?

I have a ravenheat combi boiler it is one of the RSF 84et 84e. When running a shower or bath the water keeps g... [Read more]
Mend Heating, Home Heating Systems

halstead finest gold locking out?

finest gold locking out,i have to switch off/on power 4-5 times to get it running, pressure is at 1.7 bar on g... [Read more]
Mend Heating, Home Heating Systems

Hot water running cold from Combi boiler?

My boiler is 2 years old, the heating part is fine but in the last few weeks the hot water has been running co... [Read more]
Mend Heating, Home Heating Systems

1 RADIATOR REMAINS COLD?

MY HUSBAND PUT A SHELF UP AND PUT A SCREW THROUGH THE CENTRAL HEATING PIPE, WE HAVE A COMBI BOILER, HE REPAIRE... [Read more]
Mend Heating, Home Heating Systems

ferroli mondena 80 hot water running hot and cold?

boiler fires intermitent while hot water is running
Mend Heating, Home Heating Systems

Intrmitent hot water whilst running the shower or taps?

I have worcester 28i RSF combi boiler, Approx 7 years old, The hot water cycles hot and cold at about 30 sec... [Read more]
Mend Heating, Home Heating Systems

Ideal Classic LXFF & FF FF260?

Can anyone help please. My Ideal Classic LXFF & FF FF260 when I switch to constant the system just goes cold, ... [Read more]
Mend Heating, Home Heating Systems

Why is there a vacuum in sealed central heating system?

The pressure in my sealed central heating system increases to about 2.5Bar when hot and running and drops to a... [Read more]
Mend Heating, Home Heating Systems

Worcester oil heatslave 20/25 about 4years old. ?

When i ask for hot water I get the pre-heated hot water but when this is exhausted it runs cold. The boiler st... [Read more]
Mend Heating, Home Heating Systems

Boch worcester 280 combi boiler?

Hot water supply to radiators is ok. Hot water supply to kitchen and bathroom taps keep running hot and cold,... [Read more]
Mend Heating, Home Heating Systems

Baxi 105e hot water problem - runs hot and then cold?

Washing the dishes I discovered that the hot water runs and then you can hear the boiler shut off (the LEDs st... [Read more]
Mend Heating, Home Heating Systems

how can i fix my ferroli boiler!?

i have a ferroli F30 condensing combi boiler and of late seem to have a problem when running the hot water, us... [Read more]
Mend Heating, Home Heating Systems

Biasi Prisma 24se won't fire up when cold?

Over the last six months there has been a gradual increase in the time the boiler takes to fire from cold. Ori... [Read more]
Mend Heating, Home Heating Systems

Potterton 80, heating not working?

Potterton 80, hot water works fine, but the heating, flow pipe is hot but the return is cold. The boiler turns... [Read more]
Mend Heating, Convector Heaters

Alpha cb24 boiler no heating but hot water ok?

I have an Alpha CB24 combi boiler. The heating fires up for between 10 seconds and 3 minutes the cuts out keep... [Read more]
Mend Heating, Home Heating Systems

vokera linea 28 - intermittent hot water?

when running the hot taps - after a minute or so the boiler shuts down (ie no flames). If left the water runs ... [Read more]
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