How to mend...Vaillant

Vaillant F22 fault?

f22 fault how to fix

Boiler over pressure on the hot-water side?

My vaillant boiler dial is in the red on the hot water side

Vaillant eco plus 531 boiler?

replaced pcb board f70 ,asks for password no,17, but no 17 on display ,goes from 16 to 22 .on boiler vaillant... [Read more]

Vaillant Turbomax pro?

Vaillant Turbomax pro. The central heating will not come on but the hot water is working ok

Vaillant 828E - no hot water?

Green light is not flashing when hot water tap is running. Central heating works ok

Vaillant condensing boiler ecoTEC plus?

The boiler stopped working and showed fault F22 dry fire. I changed the 3 amp fuse in the electric switch and ... [Read more]

how do I rectify the fault as detailed below?

occasionally my vaillant eco tec pro combi boiler does not come on in the morning and a bmu error code appears... [Read more]

Water heater / boiler trips after ignition?

Vaillant VP5-ZE on demand water heater, ignites, but the ignition sparks continue to spark and the system shut... [Read more]

Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?

My boiler lights easily but after 5 minutes there is a click and then it goes off and the pilot goes out.

how to fix water pressure its down at bottom of grey part?

the heating and hot water working but pressure looks to low Vaillant ecoTEC condensing boiler

Vaillant vcw gb242 eh central heating problem?

Hi just wondered if anybody can point me in the right direction, central heating wont come on, if you press th... [Read more]

Hot water comes and goes!?

I live in Spain and have a Vaillant Geyser (Water Heater) References MAG premium ES 19/2 GXI, GI and ... [Read more]

can i replace my Potterton EP2 2 way programmer with a Center EHE0200361 RF?

my boiler is a Vaillant ecotec 618 and is NOT a combi, I wish to replace the Potterton EP2 2 way programmer wi... [Read more]

vaillant ecoTEC plus boiler fault code - how to fix?

I have ave a vaillant boiler and just now i used the kitchen tap water and there is not hot water. And, the bo... [Read more]

What does f.25 mean?

I have money in my meter but my vaillant boiler keeps saying f.25 the pressure is just above the first line w... [Read more]

Vaillant igniting issue ( domestic ) not CH?

Hello to everyone, I have a Vaillant sine 18 T-3 combi boiler that was installed in 1985. Have had parts repl... [Read more]

Vaillant ecomax 828/2 e water pressure sensor?

Hi, I need to replace the water pressure sensor, I understand that it's a quite straight forward fix, can some... [Read more]

my vaillant boiler is saying a code com on it ?

what do I do when your boiler says com on it an no heating or hot water