How to mend Ariston 21rff1

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

ariston boiler slow to ignite?

eurocombi?

Replace PCb on 30he?

boiler stopped working?

Ariston Microgenus 23 MFFI PCB Defect?

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

Ariston microgenus 23 sounds like a jumbo jet!?

Boiler fault Ariston Dia 20 mffi ce type c?

E 34 on ariston boiler microgenus 24?

how to fix a err 103?

Ariston Error Code E02 now A77?

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

boiler keeps going out?

No display on Ariston e-combi approx3yrs old?

gas boiler keeps going to reset?

ariston e combi evo?

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

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

ariston genus he shows error A06?

ariston boiler?

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

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

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

Heating? Ariston micro genus 27 mffi?

What is the problem?

Ariston microgenus 27 mffi problem?

Arriston combi boiler hot water scalding temp light comes on?

error code e02 wont work when pressurised?

ariston microgenus 23 chimney led on?