Radiator making humming noise

[actuarygi]

Hi, my radiator is making a humming noise when it is turned on. I have bled the air out but that has not stopped the noise. Anyone who could help me with it ? Thanks !

[DulwichFox]

Possibly the Thermostatic Valve. Try closing it down and opening up again..

DulwichFox

[HunterHtingSolutions]

If there is a thermostatic valve fitted it is almost certainly the problem. Depending on the brand of the thermostatic valve most of the heads unscrew (chrome ring just below the plastic part of the head). Take head off and see if the sound stops, if the pin is stuck in the original position the noise will continue. You can sometimes free the pin up just by hitting the brass angled part of the valve with a pair of grips. I wouldn't recommend you pulling the pin out yourself manually as some pull right out and you'll get wet!

Hope that sorts the situation!

Billy

[Garveyplumbing]

Open both valves on either side of the radiator fully by turning them anti clock wise. If this doesn't work then you will probably require a new set of valves. (Thermostatic and lock shield)

[actuarygi]

Thanks guys. The noise is actually coming from the central heating unit boiler (the one unit that is inside the house), not the individual radiators in the rooms. I have posted some picture of the pressure perhaps that helps to explain. Thanks !!!

[actuarygi]

more photo

[actuarygi]

more photo 2

[DulwichFox]

Your system is showing 0 bar. Dial

Most systems operate at 1 - 1.5 bar.

Normally you can top this up by opening a tap.

As you have a separate pressure vessel and loosing pressure

you may well have a water leak in your system.

I'm not a heating engineer but have had some dealings with such things.

I strongly advise you to appoint a qualified engineer to take a look.

I'm sure someone here on EDF will pick this up.

DulwichFox

[Jeremy]

Possibly bleeding the radiators caused a loss of pressure... should top it up by opening the inlet tap, as fox suggests. Doubt that will fix the noise though.

[Johnny5]

Hi

Topping up pressure will help elimate any heat transfer problems through main heat exchanger

If problem still persists other faults are

1

Possible vibration through boiler heat exchanger

2

No system by pass or not set

3

Internal circulation pump

4

If noisy in operation at low flame , poor combustion setting

5

Main heat exchanger , is vibrating on housing inside appliance

6

Fan noise

( check co2 readings and non return diaphragm

Hope this helps

Used to work for Worcester bosch , so had many a noisy boiler

Ps

Possible case as well

Needs to be checked out if pressure does not help

All the best

John powers

[actuarygi]

Thanks everyone for your input !!