Recent: Safely remove screen protector from a Macbook Air?

Mend > Plumbing

Mend Ideal Classic LFF & FF Central Heating Boiler Radiators

knocking sound?

hi
my boiler make's a knocking sound when the central heating starts up i have checked all the radiators and none seem to have any air in them.
can you help me please

my boiler is an ideal classic lxff & ff
thankyou

kim
February 2010
IdealIdeal Classic LFF & FFD.I.Y, PlumbingCentral Heating Boiler Radiators
check pump not working so water not circulate and boiler is overheating if sound comes after a while than scale in the boiler

mr K
February 2010
Sounds like air in the system...Try bleeding your rads.

CHUM
February 2010

Automatic Answer

We may have found other answers which could help you.

Click here for Central Heating Boiler Radiators

Related Questions ...

Mend boiler central heating radiators
1

My central heating system is very noisy?

I have a combi boiler which is about 5 years old. When the heating comes on, I get a lot of clunking and clic... [Read more]
Mend hot water central heating immersion heater
4

Immersion heater water luke warm at best?

Hi, We have an old (1970/80's) heating sytem. We have a Concord boiler which feeds the radiators and central h... [Read more]
Mend boiler thermostat radiators
2

should my central heating pump run all the time ?

I have a Baxi combi boiler which is 8yrs old. I put my heating on constant at a low temperature. I don't hav... [Read more]
Mend central heating radiators pressure
2

Urgent Help Needed For Heating Issue?

Hi All, I have a modena 80e model boiler and have just attempted to fire up my central heating. The issue ... [Read more]
Mend radiators boiler gas
1

radiators not getting hot?

we have a vokera compact boiler and have had british gas out recently as we have a warrranty out with them but... [Read more]
Mend central heating temperature boiler
1

TRVs not working?

I had a new combi boiler fitted about a year ago but it was only used for hot water but I recently had central... [Read more]
Mend central heating plumbing radiators
14

Central Heating problem?

Hello all, I have a glow Worm spacesaver and the problem is that when I put the heating on,the boiler fires u... [Read more]
Mend heating radiators thermostat
2

Central heating coming on when heating the water?

Hello, We had an issue with the boiler a while back, it broke down and wasn't heating the water, bloke came... [Read more]
Mend boiler radiators central heating
1

noisy central heating?

when the central heating comes on there is a loud bang. its sometimes the second or third time the central hea... [Read more]
Mend central heating radiators plumber
1

bolier pressure ?

I must admit I know nothing about boilers/central heating etc...but, we had a plumber out yesterday to fix a p... [Read more]
Mend central heating radiators plumbing
3

Central heating not working at all?

Boiler is working, hot water in the taps, pump is working on the boiler, thermostats and timer working okay, t... [Read more]
Mend central heating boiler temperature
4

Sime super 90. No hot water. Won't fire up?

hi, The central heating (radiators) is fine although, for quite a while now the switch clicks on and off a f... [Read more]
Mend central heating radiators combi
3

Puma 80e downstairs radiators cold upstairs very warm?

Hi i have a Potterton Puma 80e combi boiler. With the central heating on the upstairs radiators are getting ve... [Read more]
Mend central heating combi boiler radiators
1

What is the cause of cold radiators in my top bedrooms?

My central heating works fine and I had a very good make, fully certified combi boiler installed only last yea... [Read more]
Mend boiler plumbing hot water

My shower and hot water taps are running cold?
Mend boiler frozen pipe error code

No heating or hot water and no idea whats wrong !!?
Mend boiler ignition heating

My ideal isar HE 24 is showing F L on the screen and won't fire up. ?
Mend boiler heating diverter valve

diveter or not?
Mend central heating boiler radiators

knocking sound?
Mend sealed system heating

converting to sealed system?
Mend boiler leak system

Gas Jet Lights but goes off again after about a minute?
Mend boiler heating plumbing

I have an Ideal ff380 boiler. The heating is not coming on with the timer?
Mend boiler noise plumbing

rattling nosie in the ideal bolier??
Mend where overheat button

where is the overheat button on an ideal elan2!!!!!?
Mend code 24 showing

h3 code ideal izar he24 what is it?
Mend safety valve boiler

safety relief valve?

How to mend ...

Find out how to mend just about anything howtomendit.com for free repair help, information and advice.
Mend Plumbing ...

Other models...

Ideal Isar HE 24

Related Categories

Mend D.I.Y Tools
D.I.Y Tools
Mend Decorating
Decorating
Mend Gardening
Gardening
Mend General D.I.Y
General D.I.Y
Mend Lighting
Lighting
Mend Roofing
Roofing
Mend Switches and Sockets
Switches and Sockets
Mend Toilets
Toilets
Mend Windows and Doors
Windows and Doors

Topic

Ideal Classic Boiler Knocking Sound - Help