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Fix Fault Vaillant

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We have 1280 questions about fixing 'vaillant'

poiler prussre is too high?

I have a Vaillant eco Plus 837 boiler, the problem I'm having is that the pressure reach 3.4 bar, I tried to reduce the pressure to 1.9 bar, after half an hour the pressure go up again
home Fix label Heating label_important Convector Heaters category Vaillant

Vaillant Turbo Max pressure gauge playing up?

Four year old boiler, gauge playing up. shows very low pressure ie one or below one when CH is off. When on then the needle gradually rises up and goes beyond the green bar to almost red. I have on ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

hot water flow problem?

i have a vaillant boiler when i turn the hot tap on the boiler only fires up when tap is fully open when you slow the flow of water down to get hotter water the boiler switches off
home Fix label D.I.Y label_important Plumbing category Vaillantdone

vaillant vcw gb 221 h heat exchanger?

i'm looking for a heat exchanger for a vaillant vcw gb 221 h the only part i can find listed doesn't look anything like my heat exchanger has anyone got a part number?
home Fix label Heating label_important Home Heating Systems category Vaillant

Cool radiators and luke warm water.Vaillant compact 637e?

I have a Vaillant compact 637e. It seem to be working OK as it's running and there are no fault codes, but my radiant arn't getting very hot and my water isn't as warm as it has been in the past.....c ... more
home Fix label Heating label_important Home Heating Systems category Vaillant

Vaillant eco max combination boiler?

boiler stop working showing F10 and now F30. please advice what is actual problem and how to go about. thanks. Sat
home Fix label Heating label_important Home Heating Systems category Vaillant

Would router interfere with wireless room thermostat?

Our room thermostat ( Honeywell) has ceased to communicate with our boiler.This coincides with having a router installed in the same room as the boiler. The boiler is giving us hot water, but there ... more
home Fix label D.I.Y label_important Plumbing category Honeywelldone

Vaillant EcotecPlus Boiler --Pressure gauge erratic?

Hi: When my heating is on, the needle of the pressure gauge shoots right up to the red. Then when the heat is off, it goes back down and sometimes dips to register an 0.5 bar pressure reading. Really ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

pressure gauge shows needle below one?

I have a turbo vaillant boiler. the needle on pressure gauge was below 1, so I added water to it taking it to just below 2 on the green bar. The following morning it was back to just below 1 but when ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

Dial on red?

My vaillant boiler dial is in the red on the heating side
home Fix label Heating label_important Home Heating Systems category Vaillantdone

No heating, but hot water. Boiler tells me there is ' NO demand for heat'?

I have a Vaillant ECOtec plus combination boiler. I rang Vaillant and they asked me to make various checks. They concluded that the thermostat was not communicating with the boiler and would need to ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

Vaillant 828E tubomax plus?

There is a drip and the water is out of the C/H system. looking at the diagram it might be the flow sensor that is leaking? how do I stop the leak ? I top up the system every 2 days.
home Fix label Heating label_important Home Heating Systems category Vaillant

Vaillant VCW GB 242EH combi boiler?

CH flame failure due to low water pressure. re- pressurised but wont ignite. pump , fan & DHW working OK
home Fix label Heating label_important Home Heating Systems category Vaillantdone

what is fault F75 on vaillant ecotec 360?

boiler does not come on so no hot water or heating.
home Fix label Heating label_important Home Heating Systems category Vaillantdone

first no hot water , now no heating vaillant 282e?

is there muck in the tubes of the pressure switch or is it the micro switch for that white arm behind the pump. startup sequence is all ok until ignition spark but no flame ????????????????????????? ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

Error message on thermostat?

What does BMU Err mean when displayed on the thermostat for my Vaillant system?
home Fix label Heating label_important Home Heating Systems category Vaillantdone

vcwgb242eh vaillant combi boiler?

vcwgb242eh shower off combi boiler keeps going hot and cold
home Fix label Household Appliances label_important Vacuum Cleaners category Vaillantdone

Vaillant Boiler Ecotec?

Temperature shows normal but it flashes and theres another figure that says 0.6 bar. what does this mean?
home Fix label Heating label_important Home Heating Systems category Vaillantdone

I have a vaillant eco tec and the pressure is only 0.8. ?

I have a vaillant eco tec and the pressure is only 0.8 so therefore the heating is working but there is no hot water. I turn the valves on the feeder pipe to fill the system ( I have done this sucessf ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

our can i fix my cobi vaillant boiler?

my boiler the water keeps going hot then cold at all times what is the problem
home Fix label Heating label_important Home Heating Systems category Vaillant

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Fix Fault

Audio Bathroom Appliances Boats Breakables Cameras Clocks and Watches Clothing Computers Cooling D.I.Y Furnishings Furniture Garden Tools Heating Household Appliances Kitchen Appliances Leisure Equipment Memory Musical Instruments Navigation Office Appliances Power Tools Security Systems Software Telephones Toys Vehicles Video

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