How to mend Vaillant

what does a flashing L 9 mean on the make isar HE24?

No heating or hot water, L 9 flashing, what does this mean? The combi boiler is an isar HE24.

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Vaillant Turbomax 824 overheats very quickly in heating mode?

My Vaillant Turbomax 824e overheats in heating mode all of a sudden after 12 years working fine... I replaced ... [Read more]

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Valiantecotec - more pressure than needed?

Just re-pressurised my ecotech boiler and over pressured it to between 2 and 3 bar. Is that a problem and i... [Read more]

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How can I fix my Vaillant Turbomax Combination Boiler?

My Vaillant Turbomax Combination Boiler provides a good hot water supply to the radiators but the tap water is... [Read more]

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Hot water problem?

A vaillant boiler has a problem with its hot water it going to hot. The hot water stat is set at 60c but the b... [Read more]

how do i fix vaillant turbomax 242ie?

fan proving light does not come on and boiler locks out after a few seconds. new fan fitted; new air pressure... [Read more]

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Vaillant Ecomax boiler - Fault Code F22 - Please help?

Major probs with my ecomax boiler. Over 2 weeks ago, when in shower noticed problem whereby hot water would ru... [Read more]

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Boiler does not fire up - nothing showing on screen of Vaillant Eco Max Pro?

Boiler does not fire up - nothing showing on screen of Vaillant Eco Max Pro. What is wrong? Seems as though ... [Read more]

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vailiant eco tech combi 824 boiler?

How do I find the changeover diaphram as I can get heating but no hot water and have been told that you can re... [Read more]

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How do I fix F75 problem on vaillant ecotec 618 R1?

How do I fix F75 problem on vaillant ecotec 618 R1

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vaillant 824e eco max?

how to replace diverter valve

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vaillant 824e eco max?

how to replace diverter valve on vaillant 824e eco max boiler

no hot water on model vailliant turbomax pro828e, light not lit?

all lights are lit except the hot water light, i have no hot water how can i fix it please

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Vaillant Ecotec Pro with F22 fault?

Vaillant Ecotec Pro with F22 fault - I know this means it needs topping up with water as the pressure is .2 ba... [Read more]

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how do I fix vaillant ecotec plus reading F.75?

My vaillant ecotec plus displays f.75. Pressure reads 1.4 bar. Have no heating or hot water. how do I fix this... [Read more]

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What is fault F25?

Electric went off for four hours but unable to get vaillant ecotec boiler back on. Fault F25 shows. Any ideas?

How to reduce the presue in the system.I over fill it!?

Vailant turbo MAX plus-I over fill the system and the pressue is between the green and red section.The fault d... [Read more]

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how old is the valiant turbomax vuw gb 242 boiler?

how old is the valiant turbomax vuw gb 242 boiler

valliant ecotec pro 28 boiler. The pressure keeps going down!!?

Help the pressure on my boiler keeps showing F22 error code - came on here yesterday and followed the instruct... [Read more]

Pressure gauge Valliant eco?

Wheh both heating and hot water are on presure gauge goes to red.