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Fix Fault Vaillant

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We have 1280 questions about fixing 'vaillant'

why does the pump keep running when I turn the hot tap off?

My Vaillant combi boiler VCWE 240 works fine with the heating, but when I use the hot water, it doesn't switch the pump off when I turn the tap off. I've had Vaillant techs out & they just fiddled wit ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

I have a Vaillant thermo compact plus 628E ?

Please can any one advise me on what I can do with a F23 fault on the boiler. Done flush and changed the pump!!! Please please. It comes on/off then after with fault code F23
home Fix label Heating label_important Home Heating Systems category Vaillantdone

My 18 year old Vaillant VCW GB 242?

The boiler has started losing a lot of water & needs topping up at least once a week. I have been advised by a plumber that there must a leak somewhere in the pipework under the floorboards.Is it at ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

Ravenheat heating thermostat transmitter does not work?

My Vaillant combi boiler provides hot water but the Ravenheat transmitter type thermostat has stopped working so that the central heating does not work at all. Transmitter unit batteries have sufficie ... more
home Fix label Heating label_important Home Heating Systems category Ravenheatdone

How to refill Vaillant ecoTEC pro system?

I have a Vaillant ecoTEC pro combi bolier. Following workmen removing a radiator I have an F22 code error. How do I refill the system?
home Fix label Heating label_important Home Heating Systems category Vaillantdone

How difficult or easy to replace pump on boiler?

We have a Vaillant Thermocompact 615EH boiler which has started to get noisy and needs replacing. It looks relatively simple to replace but would welcome advice as I can't find a repair manual.
home Fix label Heating label_important Home Heating Systems category Vaillantdone

Have a vaillant ecotec plus 824. The water gets hot then goes cold?

Have a vaillant ecotec plus 824. Real problems!!The water gets hot for about a minute then goes cold and stays cold?...... An engineer came yesterday to stabilise the pressure as needle was going into ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

vaillant ecomax 835-e we have hot water but heating does not fire up?

we operate our boiler manualy turning it on and off as we need it our hot water is working fine but our heating has refused to fire up the water pressure is ok we have replaced the batteries in the r ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

fault code s.0?

my vaillant boiler wont turn on
home Fix label Heating label_important Home Heating Systems category Vaillant

How to adjust heating & water controls Vaillant ecoTECpro?

Since being serviced recently both water & heating have become too hot; the dialls on the left which control water and heating (with plus and minus schemes) must have been altered by the servicer beca ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

Vaillant mag125/7 LPG water heater?

Hi, I have a fault with the water heater in my motorhome. It is slow to ignite the burner when the hot water tap is opened and slow to go off when the hot water tap is closed. Can't find a manual for ... more
home Fix label Vehicles label_important Mobile Homes category Vaillant

how to fix my Vaillant ecotec plus 824?

My boiler is flashing con on display as I have had a rubber pipe split. I have tried hair dryer for 1/2 hour in the electric panel with power off and when I switch it on the boiler works fine but the ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

Ignition indicater flashing VUW242/1E Vaillant?

Timer turns heating off 30 seconds later Ignition indicater flashing . Power off resets til hot water or heating is used then Ignition indicater flashing? Gordon
home Fix label Heating label_important Home Heating Systems category Vaillantdone

vaillant ecomax 828/2 e?

hot water runs cold after a couple of min, no fault showing on the display panel
home Fix label Heating label_important Home Heating Systems category Vaillantdone

Vaillant ecoTec 831 I have hot water but no heating?

Please help! Our heating has suddenly stopped working. The display shows that the internal pump is running, the heating mode is active and the warmstart system is active. No flame is showing (no ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

Pressure increase and decrease problem?

I have a vaillant combi turbo 824e and have noticed the pressure dropping to well below 1 bar. I top up and bleed the system . The system when cheating on goes up over to 3bar and relief kicks in. Aft ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

Vaillant turbo max going into lockout??

Iv got a customer with a vaillant turbo max,black front green control buttons,gc 4704425.wen heating is on,they run hot tap but sometimes goes into lockout,it happens more wen heating has been on for ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

could anyone help me please my vaillant boiler wont switch on?

my valliant boiler wont switch on, the fuse is ok, the lights on the boiler are off even when i switch it on
home Fix label Bathroom Appliances label_important Baths and Showers category Vaillant

Change diaphragm on Vaillant boiler valve?

I have got a Vaillant boiler model no VUW 242 EH and need to change the diaphragm on the diverter valve. Is it possible to just drop the bottom part of the valve and do this in situ and if so anything ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

How can I fix my Vaillant Ecotec Plus 428 boiler problem?

When the outside temperature is very cold, and the boiler fires up to heat domestic water and/or the central heating, after about 15 minutes, a vibration/rattling noise is generated in the boiler, whi ... more
home Fix label Heating label_important Home Heating Systems category Vaillantdone

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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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