While you wait for answers, we may have found some information which could help you.
Click here for Creda Storage HeaterCreda Night Storage Heater 79065B?
How to adjust automatic timing of the creda automatic heater model 79151?
Storage Heaters - Creda 79141 and 79151?
Heater not turning off?
need diagram for Creda Comfortair AB heater problem?
How can I fix my creda storage heater 79161? ?