I believe you will need a curtis controller handset or laptop cord and software with at least dealer access to reset or change the maintenance light/interval.
Or if you need any help from Combilift (AisleMaster) just go to thier web site either click the link to technical help (scroll to the bottom and select "Technical Support", or you can use the chat bot and it will point you in the correct direction.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.