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My vaillant boiler is displaying fault f.22 - Air Conditioners

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  • D4Danny Nov 23, 2008

    Hi there,

    My Vaillant boiler is displaying error F.22. This meant no hot water and also the radiator is not hotting up, any idea or help will be much appreciated

  • caledonian63 May 10, 2009

    How do I fill and how much water do I add to my Vaillant eco tec pro 28?

  • Anonymous Mar 26, 2014

    intermittent fault boiler stops no h.w. no heating on refiring boiler both heating and h.w. restored . few days later same thing happens

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Have you topped the system up with water? The pressure gauge should be showing an operating pressure of 1.5 Bar in the green section.

Posted on Jan 13, 2009

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Vaillant aqua plus combination boiler


First off, I'm not familiar with this particular boiler. I'm in the USA. I believe this is manufactured in the UK and may not be distributed here.
Second, and are you sure you needed to replace the blower in the first place?

Those questions really need to be answered before making any accurate remote diagnostics. This is a pretty complex piece of equipment with costly replacement parts. Some diagnostic and/or service work should be left up to a professional in your area if you're really not sure of what you're doing.

We all (or most of us) like to save money by doing our own repairs. If you feel confident about working on this further you can go to www.vaillant.co.uk to get manuals and service info online. This info will do you much more good than my guesses will. This unit has a diagnostic/control board that will display most faults if you know how to use it. I looked at some of the info online. They have pretty good stuff available to you if you know how to use it.

After all saying that, it "could" be the pressure switch not closing after the fan starts. You didn't say whether the new fan is starting or not. On a call for heat (or hot water) the fan starts (controlled by the main control board), the pressure switch proves the fan is running (and venting combustion gasses out of your home), it most likely has to prove water flow. If all the proving is confirmed, the ignition sequence will begin.....ignition, prove ignition, main gas valve opens, heats water, so on and so forth......

Now, if you still feel confident to work on this boiler, go to Vaillant's web site and read the manual(s). If you're not confident, call the heating man in your area. Just be careful with gas, electricity and hot water!!

I wish I could have given you more info to actually fix your problem, but I need more info as to why you changed the combustion blower to begin with. What WAS it doing? what IS it doing NOW and so on....

Good Luck to you! Let me know what you find out.

Bob
lainemech

Mar 18, 2014 | Air Conditioners

1 Answer

Hi can anybody help,i have a vaillant combi boiler and i cannot turn the heating off on the radiators can anbody help cheers!


If you they won't go off when your timer is off. There's a possibility it's clock keeping it on although its turned off, which is fairly rare. However depending in which model of Vaillant you have, if your boiler has a hot water pre-heat on it. Some models which have this the diverter was prone for sticking thus leaving the port for the radiators open when in hot water mode.

Oct 03, 2013 | Air Conditioners

2 Answers

A have a vaillant ecotec boiler and when it fires up the fan is very noisy is this right


most likely no. there might be a obstruction in the blades, dirty filter, the motor might have a bad berring , the fan blades might have bent and now are touching the housing prob should call a trained tech boilers aint no joke

Aug 06, 2011 | Air Conditioners

1 Answer

MY VAILLANT BOILER IS DISPLAYING F75.


WHAT IS MY BOILER IS SHOWING F75 WHAT DO I DO?

Nov 28, 2010 | Fedders AEY08F2FCOM Wall/Window Air...

1 Answer

Manual for a Vaillant combi boiler, ecoTEC pro28


my eco tec wall mounted boiler cuts out after about 10to15 days this unit was fitted in august this year

Sep 29, 2010 | Air Conditioners

1 Answer

Central heating boiler problem


this is probably a faulty diverter valve. more info needed

Jan 02, 2009 | Air Conditioners

1 Answer

Vaillant combi boiler problem


when the tap is turned on and the water light on the boiler doesn't this means the diverter valve is not operating it could be down to low water pressure in the house this can be checked at the cold tap in the kitchen. if there is plenty of pressure then it could be the diagphram in the diverter valve is worn or split. the diagphram is only a few pounds but it depends on the engineer you get as to how much money he wants to fit it.
the egg timer symbol (or two pyramids together) is an ignition indicator turn off and on again to see if it will fire with the tap running. reset the boiler with the lower right hand control knob.

Dec 31, 2008 | Air Conditioners

2 Answers

Hi,i have a vaillant turbomax combi boiler,the radiator side is working well but when running hot tap the boiler kicks in for about 5 seconds ,hot water starts to flow then boiler cuts out,water runs cold...


Which turbomax, as there a two different models. The more modern one, with the brass CPL diverter valve, located at the front left of the boiler, was very prone sticking & jamming, this would restrict flow through the hot water circuit in the boiler, and cause cycling. Vaillant actually modified the diverter. You can identify, if it is the old type, as there is a very small hole in the middle of the diverter on the old ones, probable no more than 1mm-2mm wide. The modfied one, is much bigger approx 5mm wide. If old type, replace as this usally sorts the problem

Nov 23, 2008 | Air Conditioners

1 Answer

Vaillant thermocompact 628E gas boiler - not working. Seems as though no power getting through. I had a to replace a switch where some drops of water had leaked into that supplies the power to the boiler,...


Dear Prockie..

First, find the wiring diagram and a voltmeter. Attach one lead of the meter to a good ground. Then trace the voltage as laid out on the diagram. For example, if you have voltage to a switch or device, but no voltage out, then that device may be defective. Check all connections. Your boiler has "self diagnostics" but with no display a simple power problem is indicated. If you have no wiring diagram check with the manufacturer online.

Ray

Nov 15, 2008 | Air Conditioners

1 Answer

My parents have a Vaillant Ecotec 831 boiler. Has continually broken down ever since it was fitted nearly 2 years ago. The guy who fitted it keeps coming out and it works for a few days then packs in...


Get vaillant to look at it. It could be installation fault. Their advise is impartial and they can advise if boiler can be repaired.
devinder
Corgi engineer

Oct 14, 2008 | Air Conditioners

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