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Fix Fault Vaillant

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We have 1280 questions about fixing 'vaillant'

Vaillant Boiler completely silent when should be firing!?

My boiler is a Vaillant VC GB 142 EH (GC No. 4104409). Usually when it fires up, there is a whirring, then it fires. But now it is completely silent, and obviously not even trying to fire!! There is p ... more
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Pressure drop on Vaillant ecomax 828/2e Condensing Boiler?

Keep having to top up the boiler every other day as the pressure keeps dropping, would replacing the pressure relief valve fix the problem?
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Why is my Vaillant Turbomax VUW boiler pressure dropping after a service??

Hi, I had my boiler serviced and repaired (replacement diaphragm and push rod as micro switch wasn't working correctly) and ever since the pressure has been dropping to nothing every few hours. Wat ... more
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clock problem on vaillant combi boiler?

I have a Vaillant Turbo Max VUW BB242-5 The problem is the the central heating doesn't come on or turn off, like it should using the clock/timer. I guess this is a fault with the Clock? Would som ... more
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how can i fix my vaillant combi boiler?

hello how can i fix my vaillant combi boiler as when i put the heating on the boiler fires up straight away but not for the hot water it did a couple of times when i turned on the hot tap downstairs b ... more
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what code 5.1 means on vaillant turbomax vuw gb 242-5 boiler?

my boiler plays up on running my hot water, the info button lights up and upon pressing it the code 5.1 comes up.plus when i run a hot tap the code 5.10 comes up? i do not have an instruction manual s ... more
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How can i fix my Vaillant combi boiler?

The water pressure drops quite fast when the central heating is turned on. Looking at the external overflow pipe i can see the water dribbling out. How do I fix it and will it be expensive?
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pressure too high?

the pressure on my vaillant combi boiler keeps going too high. A service engineer lowered the pressure and refilled the system but water dripping from the flute and though I lower the pressure it kee ... more
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no pressure on vaillant GB221?

Vaillant VCW GB221H type c. Pressure bar is on zero, resulting in difficulty firing up and also lower water temp.cant workout how to get it back up no flexible hose or obvious tap to turn. Anybody a ... more
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vaillant combi boiler?

there is a red knob underneath the combi boiler to the right what does it do ?
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f28 fault is showing on my vaillant boiler system?

f28 fault is showing on my vaillant boiler system. how do i fix it??
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Combi boiler-pressure low-hot water ok?

Hi, I have a Vaillant Turbomax 242/282e boiler and the pressure has dropped to 0.5. Hot water is fine from all taps and hot and cold water comes out forcefully as per usual. I have looked for leaks ... more
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Vaillant VCW sine_18 T3-wax capsule?

Can anyone tell me where the wax capsule is located in this boiler & provide me with a brief description on how it should be replaced?
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how can i fix my vaillant turbo+824e?

no hot water. green light flashing on F1
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Vaillant f22 error code?

I have a Vaillant combi boiler that I have had since new. A problem has now developed. Whenever I flush the upstairs toilet the boiler turns out with error code f22. The puzzling thing is that this on ... more
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Vaillant VCW sine18 T3 WFH-hot water supply problem?

My boiler will not provide hot water at the tap unless it is running in heating mode when the tap is opened (position 1 on switch) but when the boiler shuts down via the room stat hot water can't be d ... more
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Please help with a Vaillant boiler? Turbomax combi 282e?

Hi, My Vaillant turbomax 282e c/h boiler is taking it's time lighting up after you've opened the hot tap. I have mistakenly replaced the flow switch thinking that it was the cause of the problem but s ... more
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My vaillant ecotec boiler is showing a high pressure?

My Vaillant ecotec boiler is showing a high water pressure in the pressure gauge???
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How can I fix my Vaillant Combi boiler VCW 18 T3W FH?

Whilst using the shower, the hot water cut out. The boiler failed to fire up for water until I'd left it for about 10 minutes. A service engineer has been round and 'diagnosed' that all it needs i ... more
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How to relight a VaillantWCW GB 221 boiler?

My vaillant WCW GB 221 boiler ignition light has blown out. How do I relight it. I don`t know which buttons to press or if it has piezo ignition. I do not have an instruction book.
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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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