While you wait for answers, we may have found some information which could help you.
Click here for Gas Fire StayE1 error code ?
What is Error Code A2 on Ariston water heater?
How to reset Dimplex storage heater CXL5N?
igenix?
Creda Night Storage Heater 79065B?
Looking for reset button on dimplex convector heater DX25F10?