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We have 22642 questions about mending 'boiler'

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Mend Heating, Home Heating Systems

why does boiler keep ejecting water from c/heating?

halstead boiler combi 82 keeps ejecting water from c/heating when running central heating even when central he... [Read more]
Mend Heating, Home Heating Systems

operating instructions?

does anybody know where i can find free operating instructions for a boiler ie internet site. cheers
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

baxi main 30 boiler?

boiler cuts off itself then ihave to switch off and on then resetting switch to activate again what is the fau... [Read more]
Mend Heating, Home Heating Systems

the pilot light wont come on?

pilot light wont stay on and its not heatin up when it does stay on its only for 1 to 2 mins the boiler is a i... [Read more]
Mend Heating, Home Heating Systems

radiant combi boiler maxicomfort ?

no heating or hot water turn on lights come on pressure is ok,after 10 sec red light with pa stays comes on.n... [Read more]
Mend Heating, Home Heating Systems

Can anybody help with a Vaillant boiler with a fault code f33 ?

My Vaillant boiler (ThermoCompact) has a fault (again) of f 33. I am painfully aware of what it is (the last ... [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

Micron 40ff heating up then cooling right down before starting up again. ?

Please help I have a Micron 40ff with radiators with TRV's & a room stat, I replaced the old style PCB about 3... [Read more]
Mend Heating, Home Heating Systems

boiler make in a noise?

when heating or water comes on there a noise like a howlin comes from boiler have let air out of system and r... [Read more]
Mend Heating, Home Heating Systems

Vaillant shows more than 50° c?

I have a Vaillant Gas Boiler. A year ago it didn't work and a lot of people tried fixing it. Now it does work,... [Read more]
Mend Heating, Home Heating Systems

Glow Worm 30 cxi leaking slightly, please help?

My boiler is leaking very slightly from the cold water inlet pipe (I believe). Has anyone came across a simil... [Read more]
Mend Heating, Home Heating Systems

Micron 80FF--how to fix?

boiler 7years old. Circuit board, thermistor, Gas valve, thermostat and air pressure switch have been replaced... [Read more]
Mend Heating, Fan Heaters

ferroli optimax he 31 fan parts?

wy the boiler report fan problem after less than a week been intall?
Mend Heating, Home Heating Systems

ref auto venting valve on 24 i worcester boiler?

ref to my last q does the valve have a screw on it or is it left open
Mend Heating, Home Heating Systems

code 04 fault . loss of pressure?

the system losses pressure when not in use overnight . i added water through filling loop , boiler then starts... [Read more]
Mend Heating, Home Heating Systems

What is causing leak from overflow pipe on baxi combi instant 105e?

Leak from overflow pipe on baxi combi instant 105e of about 2 mugs a night. Consequently boiler not firing up... [Read more]
Mend Heating, Home Heating Systems

wordester combi 24cdi?

the boiler switches on but after 30 seconds the "tap"icon flashes red and we can not get heating or hot water.
Mend Heating, Home Heating Systems

Valliant boiler with low water pressure?

I have a Valliant boiler modelVUW GB 242E I always have to open the water inlet valve to keep the pressure up ... [Read more]
Mend Heating, Home Heating Systems

worcester 24i RSF boiler(7 years old)?

system working ok but water is coming out of the top hole in the auto air vent. have switched the system off ... [Read more]

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