How to mend Ariston 21rff1

I have an Ariston Genus boiler. Fault showing 30 40 50, I can't find manual?

E 34 on ariston boiler microgenus 24?

What is the problem?

Why is the pressure on my Ariston boiler rising to nearly 4 Bar?

Why does my boiler remain ON - even when switch is moved to OFF?

Ariston Error Code E02 now A77?

how to fix a err 103?

Ariston microgenus 27 mffi problem?

gas boiler keeps going to reset?

eurocombi?

ariston e combi evo?

ariston boiler slow to ignite?

boiler keeps going out?

Please could anyone tel me why my boiler constantly shows err 501. I reset?

error code e02 wont work when pressurised?

No display on Ariston e-combi approx3yrs old?

Arriston combi boiler hot water scalding temp light comes on?

Error light blinking (orange colour) on Ariston e-combi boiler?

Heating? Ariston micro genus 27 mffi?

Ariston Microgenus 23 MFFI PCB Defect?

I have an Ariston Clas He system with an error code of 1P2?

Replace PCb on 30he?

Boiler fault Ariston Dia 20 mffi ce type c?

ariston genus he shows error A06?

boiler stopped working?

ariston boiler?

ariston microgenus 23 chimney led on?

Ariston microgenus 23 sounds like a jumbo jet!?

Why is my ariston microgenus 23 combi boiler producing hot water downstairs?

I have error code 108 on my Ariston Combi boiler what do I do to fix it?