How to mend Vaillant Vuw 242e

how do I rectify the fault as detailed below?

vaillant ecoTEC plus boiler fault code - how to fix?

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

Why is heating on at night?

Hot water comes and goes!?

my boiler will no work?

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

Vaillant ecotec plus 630?

Vaillant ecotec 831 plus?

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

Valliant Eco tec 28?

What does f.25 mean?

No hot water, intermittent when air temp drops?

resetting thermostatat?

Vailliant turbo max plus 824e?

Vaillant Thermocompact Fault?

my vaillant boiler is saying a code com on it ?

no heating water?

Vaillant eco plus 531 boiler?

How do I fix f22 error on my Vaillent Ecotec Plus boiler?

Vaillant vcw gb242 eh central heating problem?

Vaillant igniting issue ( domestic ) not CH?

Valiant thermostat , BMU-Err ?

Vaillant Ecotech Plus 831 F22 fault?

Advice?

Problem with the pressure in combi boiler?

how do I vent the heat exchanger?

Vaillant F22 fault?

Vaillant 828E - no hot water?

Vaillant condensing boiler ecoTEC plus?