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Fix Fault Vaillant

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We have 1280 questions about fixing 'vaillant'

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Vaillant Ecotec 831 no hot water, but heating works fine?

I have a Vaillant ecotec plus. The heating system works fine but when you open a hot tap the boiler doesnt fire up or recognise a tap is open. A tap symbol should appear the display but nothing! All t ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

Vaillant Turbomax 824E won't light?

I have sparks and gas but the boiler often takes up to 10 cycles to light. This is intermittent, but more often than not now. Always lights with a match !

home Fix label Heating label_important Home Heating Systems category Vaillantdone

How to fill Vaillant Combi boiler?

Hi there The pressure on my wall mounted Vaillant combi boiler (VCW sine 18 T 3 W F H) is low... I understand the boiler needs "filling". Does anyone know how I should do this - or do I need to cal ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

Vaillant Turbomax VUW GB 242 E - no hot water?

CH works fine. DHW works when CH is on. No DHW when CH is off. White rocker arm isn't pushing down the microswitch when DHW is called for. I've replaced the diaphragm but still the rocker arm wo ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

Why has temp on my hot water dropped so much?

We have a Vaillant Turbomax Pro combi boiler. I believe it's only about 4 years old. My hot water temp has dropped dramatically! I like very hot water, so my temp gage on my combi boiler is at almo ... more

home Fix label D.I.Y label_important Plumbing category Vaillantdone

recurring rust problem with Vaillant combi/heating?

I have a Vaillant combi VCW280, 5 years old, with Hudevad radiators. We are going through a recurring cycle of DHW heat exchanger primary side clogging up with quite large rust particles, with the rad ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

how can i fix my vaillant turbo max 282?

i have a vailant vuw282 turbo max the heating system works fine, but the running water isnt getting up to temperature there is a slight leak from the diveter valve by the micro switch and the diverto ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

vaillant 242 help!?

boiler starts sequence fan runs then goes to lockout,no spark at electrode,no gas getting through,have cleaned all tubes,checked all reset switches,have linked pressure switch out and fitted new pcb a ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

model number?

where do i find the model number on my vaillant boiler

home Fix label Heating label_important Home Heating Systems category Vaillantdone

Flame on for 2 secs. off for two hours. !!!!!?

On my Vaillant boiler, which must be an old model as it has no l.e.d. readouts etc, the flames will work for about two seconds then stops for two hours or two days... No matter what buttons I presss i ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

Poor hot water temperature with heating on?

I have a Vaillant Turbomax combination heating boiler. When the central heating is operating & a hot tap is opened the hot water temp is low. If the heating is off then the temp is fine. I have ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

Vaillant turbomax VUW/GB282/1E heating fault?

I was called to take a look at this particular model earlier today and whilst waiting for a response from Vaillant thought I may test the local knowledge. We have a situation where the bolier will fir ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

How do i light the pilot light on a Vaillant combi VCW Sine 18T3WFH?

Hi Have moved into a property with an old vaillant boiler which has a green button a red button and a grey knob. Boiler has gone out and now i need to relight it, reason for boiler going out was ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

heating problem?

I have a vaillant combi boiler. Hot water is always fine, but can only get the heating on every now and then. Could someone let me know what they think the problem might be as it is sending me nuts. ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

vaillant 242e?

fan runs, pump runs, pressure switch makes but no ignition, have cleaned tubes and ensured reset button on ch stat is ok, electrodes not sparking. everything starts up as normal and goes through the s ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

vaillant vuw 242e?

fan starts up but nothing else happens then goes to lockout,i have linked the pressure switch out but will not fire up,no spark at electrode as well

home Fix label Heating label_important Home Heating Systems category Vaillantdone

How can fix my Vaillant VCWGB 282EH combi boiler?

My vaillant VCW GB 282 EH boiler failed to heat raditors but hot water supply seems to be working. I found it extremely hard from yellow pages who can come and fix this problem(s). One engineer from ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

vaillant open vent ecotec plus 418 fault 28?

boiler fired up when first turned on then turned it off when turned on again no egnition two codes come up s98 and f28

home Fix label Heating label_important Home Heating Systems category Vaillantdone

How do I set the timer on a Vaillant Turbomax plus boiler?

Just moved into a new house and can't set the timer on my boiler.Any idea anyone? Cheers.

home Fix label Heating label_important Home Heating Systems category Vaillantdone

I have a noisy VCW Sine TCW Vaillant Combi Boiler after bleeding the rads?

I bled 2 upstairs radiators which were cold at the top and let out quite a bit of air but having done so, the boiler now has a whining noise which I suppose is air related. Any ideas how to remove the ... more

home Fix label Heating label_important Home Heating Systems category Vaillantdone

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