How to mend Ariston Micro Sstem

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

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

What is the problem?

E 34 on ariston boiler microgenus 24?

boiler stopped working?

ariston e combi evo?

Ariston microgenus 27 mffi problem?

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

gas boiler keeps going to reset?

ariston genus he shows error A06?

ariston microgenus 23 chimney led on?

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

Ariston Microgenus 23 MFFI PCB Defect?

eurocombi?

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

Arriston combi boiler hot water scalding temp light comes on?

ariston boiler slow to ignite?

Heating? Ariston micro genus 27 mffi?

Replace PCb on 30he?

how to fix a err 103?

boiler keeps going out?

Boiler fault Ariston Dia 20 mffi ce type c?

ariston boiler?

error code e02 wont work when pressurised?

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?

No display on Ariston e-combi approx3yrs old?

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

Ariston microgenus 23 sounds like a jumbo jet!?

Ariston Error Code E02 now A77?