Hi all, have the same problems with Mspa lite. E1 code from first day of use not heating, ( have not had spa a month), arrived on 29th June new, did everything which it says to do in handbook, still no good, contacted Mspa, waste of time because they say I live in NI,,, told me to contacted who I bought it from, awaiting new upgrade filter unit from them. Not pleased.... at all with workings of spa.