Kenwood dishwasher kdw 12sl3a?

Hi I have the above dishwasher. It has a e3 error. from what i have read it could be thermostat. the water isnt warm or the plates when opened. Is it purely the only problem? or this tilting 45degrees will help? it has been transported in car on its back and to be honest cant see that that is going to help. can anyone please please please help. fed up of putting dishes in and they come out dirty . and hate washing up thanks. my number 07549358013