forgive me I'm no electrician but in my Apt I have two storage heaters the main controls the on in the hall, but the overnight "boost" isn't working if i however flick the switch on for "instant" heat that works and the same with the boiler if i flick the immersion on it will heat up hot water but it wont heat up overnight like it should, any ideas what could be causing the failure of the overnight boost? any help appreciated
