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Vaillant boiler vrt 360f BMU error what can i do

The heating was working perfect yesterday. Got up this morning no heating and no hot water. what can i dothermostat reading BMU error. what can i do to fix it.

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Posted on Jan 02, 2017

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SOURCE: I have a Vaillant ecoTech central heating boiler

f76 over heat protection triggerd on heat ecxchanger , check water leval of just google vaillant fault codes

Posted on Jun 03, 2010

  • 13 Answers

SOURCE: Vaillant boiler (VCW GB 221)

The movement of the diverter valve is critical on this appliance, and is located on rear right of the boiler, when hot water is turned on, theres are two microswitches, which must break (they both close in Central heating mode), if pump is running, it is recognising the hot water demand, check microswitches are breaking, if not, it tends to be a defective servo valve (located above the water valve), or a blocked/ restricted control line (small copper tubes which connect into the servo valve)

Posted on Mar 03, 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

  • 1 Answer

SOURCE: Vaillant boiler - heating OK, but no hot water.

Most likey problem is the diverter valve, not energising fully. This in turn will not move the little plastic lever arm that actuates the microswitch on the side, sending the signal to ignite.

You can buy a diaghram kit from most local plumb centres, you need to replace the diaghram and seals, don't forget the silicon grease to ensure the plunger doesnt stick. Kits less than a tenner.

You should have noticed before it stopped working completely the water had reduced in temperature before the weeks it failed.

To make sure it is a diverter valve fault, depress the microswitch if you can, when the hot water is flowing and hey presto the demand for hot water light should shine.

Posted on Apr 26, 2009

  • 148 Answers

SOURCE: Honeywell ST6400C - hot water not working

some digital thermostats do no not work with zone valves is this a new thermostat that you had installed

Posted on May 10, 2009

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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.

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I have a vaillant eco tec pro boiler and the pressure guage is showing zero and boiler not working, is there a simple fis ?


Refill system with water to 1bar bleed rads refill again to 1 bar , there should be a filling loop to do this with.

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I need to power flash a vaillant boiler. can you please help. water goes hold and cold, sometime the heating stop but the water works and vice versa. i was told by an engineering that it needs power...


Hi

Although not a PC problem, i have had this same issue on my Vaillant Boiler, the problem you are describing is not a power flush problem, you need to clean out your exisiting diverter valve or purchase a new one

The diverter valve is repsonsible for either providing hot water or providing hot water to the central heating, when this valve gets stuck in between the symptoms you have described above occur

I would also not recommned that you do a power flush yourslef as you may end up damaging the boiler and its pump


If this has been useful please leave postive feedback/vote/testimonial - Thank You Again - shauqatm@yahoo.co.uk

Feb 23, 2010 | KDS Valiant 6380iPTD-01 Notebook

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LOOK ON ONE OF THE COVERS 75% OF ALL CODES ARE ON THE INSIDE OF A COVER FOR SERVICE TECHS, NOT MUCH HELP BUT HOPE IT LEADS YOU DOWN THE RIGHT PATH

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Vaillant boiler no heating or hot water


refere to manual check for override switch loss of pressure no problem re-pressurise and check for leak top of rad valve good place to start

Oct 10, 2009 | Water Heaters

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I have a Vaillant boiler Turbo Max VUW 242/1E, central heating is working but no hot water


Hi,

You have a faulty diverter valve, this is a fiddly job, you need to call in a 'Gas Safe' engineer to diagnose and replace this

I hope this helps

Steve

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

2 Answers

Vaillant boiler - heating OK, but no hot water.


Most likey problem is the diverter valve, not energising fully. This in turn will not move the little plastic lever arm that actuates the microswitch on the side, sending the signal to ignite.

You can buy a diaghram kit from most local plumb centres, you need to replace the diaghram and seals, don't forget the silicon grease to ensure the plunger doesnt stick. Kits less than a tenner.

You should have noticed before it stopped working completely the water had reduced in temperature before the weeks it failed.

To make sure it is a diverter valve fault, depress the microswitch if you can, when the hot water is flowing and hey presto the demand for hot water light should shine.

Apr 13, 2009 | Air Purifiers

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

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