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Hi I have a issue with my valiant combo boiler. When heating comes on or when I turn water on it makes aeroplane noises. It's only just started it so can someone please help.

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  • Water Master
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Have you done the maintenance on it, like draining it and checking the anode etc?

Posted on May 01, 2015

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Posted on Jan 02, 2017

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SOURCE: Hi there. Our valiant boiler doesn't seem

Lack of pressure in the primary circuit [radiators] Look for a pressure gauge should read between 0.5 & 1.5 bar
Somewhere there is a tap/valve/pipe connection to refill & looks like a small thumb turn or a screwdriver turn on a connection on the mains water inlet pipe. turn on until you get the right pressure then off

Posted on Dec 22, 2009

Testimonial: " Many thanks for your speedy reply. Helpful, although problem not yet solved."

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I got htp boiler combo the boiler make domestic hot water and no heat, termostat good relay good,any parts got be replace.


If you have replaced all parts of the boiler, then there is a water leak somewhere in the system. This applies to flow water heaters. Water does not get warm up then. Perhaps the burner was blown, if you did not check it.

Nov 01, 2017 | Water Water Heaters

1 Answer

My new viessman boiler is showing F1 after it made a humming that went on for half an hour


F1 means burner is at fault ,lack of pressure, best to call viessman or the installer back as if its a new boiler it has a five year warranty

Jun 07, 2015 | Water Water Heaters

1 Answer

Hi I have a problem with my valiant combo boiler making aeroplane noises when heating comes on and i turn on the hot water. It's only started doing this so can some body help.


You don't say what model your boiler is but if its one of the older types in my experience its caused by the built in bye-pass and would require changing it to overcome the noise you describe which is what most customers describe. You can prove it by turning the central heating valve of on the flow side of the boiler momentarily you will hear the noise stop then quickly turn it back on, it often helps to you replace with new one.

May 01, 2015 | Water Heaters

1 Answer

Why does my water no come on in the morning when the programmer is asking it too and does in the evening.


Check the time clock is accurate.
If this is a condenser boiler [it has two water pipes to the outside] check that the pipe from the condenser is not blocked with ice, if so heat with a heat drier

Oct 17, 2014 | Water Heaters

1 Answer

Ariston euro-combi boiler not giving hot water


odd noise like popping or singeing fire....clicking noises.....sounds like you have a water leak putting out the pilot.......or your thermo coupling is bad....or the noise is the tank full of calcium buildup and that will make noises when the burner is on

Jan 19, 2013 | Water Heaters

1 Answer

Noisy Hot Water Gushing In Boiler


You may excess air in the lines

Nov 06, 2012 | Water Heaters

1 Answer

Hi there. Our valiant boiler doesn't seem


Lack of pressure in the primary circuit [radiators] Look for a pressure gauge should read between 0.5 & 1.5 bar
Somewhere there is a tap/valve/pipe connection to refill & looks like a small thumb turn or a screwdriver turn on a connection on the mains water inlet pipe. turn on until you get the right pressure then off

Dec 16, 2009 | Water Heaters

1 Answer

Swich on heating the pilot lights up then the boiler starts making banging noises the pressure gauge starts fluctuating and the boiler cuts out


hi you could be drawing air into the system try bleeding the system check all seals and if ok tighten all connections

Nov 17, 2009 | Water Heaters

1 Answer

Central heating and hot water have suddenly stopped working


not an engineer but maybe a heating compant,, it sounds like you have a relay that has gone bad, you have what we call a winter summer system your domestic water comes from a tank inside the boiler, you might want to think about splitting the system to save you some money in the long run, seperate the water heater from the boiler so you only heat up in the winter, right now you are heating the system that heats your house to get 30 or 40 gals of domestic hot water, it would cost you less by seperating them

May 17, 2009 | Water Heaters

1 Answer

Brand new valiant condensing boiler installed will not work


Valliant boilers have software that can be used to diagnose the unit. The software can be purchased at the plumbing supply house that the boiler was purchased from. You can also get tech. service by email as well. It sound like there is an issue with the electrical controls with it. Or the controls were wired wrong.
Technical enquiries 01634 292392 or technical@vaillant.co.uk

Apr 01, 2009 | Water Heaters

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