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Mend high vaillant boiler

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 t... [Read more]
Mend vaillant max boiler

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 t... [Read more]
Mend hot water flow problem

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 s... [Read more]
Mend vcw h heat exchanger

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 anyt... [Read more]
Mend luke warm 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 ... [Read more]
Mend eco max boiler

Vaillant eco max combination boiler?

boiler stop working showing F10 and now F30. please advice what is actual problem and how to go about. thank... [Read more]
Mend wireless thermostat honeywell

Would router interfere with wireless room thermostat?

Our room thermostat ( Honeywell) has ceased to communicate with our boiler.This coincides with having a router... [Read more]
Mend vaillant boiler heating

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 ... [Read more]
Mend vaillant boiler bar

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 ... [Read more]
Mend dial heating side

Dial on red?

My vaillant boiler dial is in the red on the heating side
Mend water boiler demand heat

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. T... [Read more]
Mend water ch system

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 th... [Read more]
Mend vaillant combi boiler

Vaillant VCW GB 242EH combi boiler?

CH flame failure due to low water pressure. re- pressurised but wont ignite. pump , fan & DHW working OK
Mend ecotec water heating

what is fault F75 on vaillant ecotec 360?

boiler does not come on so no hot water or heating.
Mend hot heating micro

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 pum... [Read more]
Mend error message displayed

Error message on thermostat?

What does BMU Err mean when displayed on the thermostat for my Vaillant system?
Mend vaillant boiler going hot

vcwgb242eh vaillant combi boiler?

vcwgb242eh shower off combi boiler keeps going hot and cold
Mend vaillant boiler ecotec

Vaillant Boiler Ecotec?

Temperature shows normal but it flashes and theres another figure that says 0.6 bar. what does this mean?
Mend pressure heating working hot

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... [Read more]
Mend vaillant water going hot cold

our can i fix my cobi vaillant boiler?

my boiler the water keeps going hot then cold at all times what is the problem

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