Question about Heating & Cooling

Open Question

We have a vaillant combi boiler model 824 plus, it is hit and miss if it fires up for hot water.The pump runs the fan runs but no flame. when it doesnt fire the diagnostics on the front of the boiler show S13. Can you help

Posted by on

5 Suggested Answers

zeusfaber
  • 247 Answers

SOURCE: Vaillant Ecotec combi boiler -

David,

The fact that you're getting a little burst of domestic hot water suggests that the boiler is capable of circulating hot primary loop water through the heat exchanger, but doesn't necessarily do so when it needs to.

What seems to be lacking is a recognition that domestic hot water is now being drawn off, and that the boiler needs to fire up and divert the primary flow through the heat exchanger.

A good place to start might be the flow switch (usually in the bottom of the boiler, where the cold water supply comes in) or the electrical connections to it.

A.

Posted on Oct 07, 2008

  • 1 Answer

SOURCE: hi,i have a vaillant turbomax

I had this. Open up the main case, take the second inner case front off to expose the boiler.

Clean the thermocouple which detects the flame being lit with some steel wool held with needle nose pliers. It will be all sooty and will turn off the gas as a safety precaution if it does not detect heat fast enough.

Don't listen to the gas man who will say "needs a new circuit board mate" as this is usually a stock response.

Posted on Jan 05, 2009

  • 13 Answers

SOURCE: f20 error on vaillant eco28

F20 is a flow sensor error. Can be due to a defective sensor/ not correctly fitted, or you may have poor circulation, a big difference in flow and return temperatures, can sometimes make the boiler think it has a defective sensor, check good circulation through system, or if you have thermostatic radaiators valves on every single radiator, take 1 head off, as if you dont have a bypass fitted, it needs a radiator as a bypass circuit

Posted on Mar 03, 2009

  • 30 Answers

SOURCE: central heating boiler problem

this is probably a faulty diverter valve. more info needed

Posted on Mar 26, 2009

  • 30 Answers

SOURCE: 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.

Posted on Mar 26, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Vaillant ecotec plus 824 problems


The Symbols should be there whenever the boiler is in use, it confirms the pump is running and the gas valve is open...i.e firing.
the pump overrun may come on after a firing to dissipate excess heat and is what it says, i.e the pump continues to run to keep the hot water moving to prevent the boiler from getting noisey. Sometimes you may see a radiator symbol which means the boiler is doing a 'heating' cycle as against hot water.

Nov 20, 2013 | Computers & Internet

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 | Heating & Cooling

1 Answer

F22 error/ low pressure


F.22 Dry fire Too little water in the appliance, water pressure sensor defective,
cable to pump or water sensor defective, pump blocked or defective,
pump output too low

May 11, 2010 | Heating & Cooling

2 Answers

Lost my user manual for the vaillant boiler ecotec plus 824 R1


try to enter here all informations and you can find the manual: http://instructions-manuals.com/search.php?cmarque=VALLIANT%20&modele=ECOTEC%20PLUS%20824

Oct 27, 2009 | KDS Valiant 6380iPTD-01 Notebook

1 Answer

Vaillant combi boiler,dirty water comes out of hot and cold taps ,just been serviced by british gas,could you tell me the problem


Hi ,

Can you please tell me the model of the vaillant, and the approx age?

I can solve this problem

I await your reply

Thanks

Steve :)

Jul 16, 2009 | Water Heaters

1 Answer

Vaillant 831 combi boiler timer help


check to see the time clock is set with the clock symbol. there are three settings on analog clocks I , O and clock the I setting is constant running, the O setting is off and the clock setting is timer.
also try setting the thermostat up higher to see if the boiler fires.

Mar 25, 2009 | Water Heaters

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 | Heating & Cooling

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 | Heating & Cooling

1 Answer

Vaillant Ecotec combi boiler - radiators working but no hot water flow to taps


David,

The fact that you're getting a little burst of domestic hot water suggests that the boiler is capable of circulating hot primary loop water through the heat exchanger, but doesn't necessarily do so when it needs to.

What seems to be lacking is a recognition that domestic hot water is now being drawn off, and that the boiler needs to fire up and divert the primary flow through the heat exchanger.

A good place to start might be the flow switch (usually in the bottom of the boiler, where the cold water supply comes in) or the electrical connections to it.

A.

Oct 05, 2008 | Heating & Cooling

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

71 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2190 Answers

Dan Webster
Dan Webster

Level 3 Expert

8205 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...