Just in case anyone needs Aislemaster Technical support, for this or any other issues any where in the world, you can use this link.
Link is https://warranty.combilift.net/technical-support-form/
Combilift Technical Support is free to use

Thanks,
Richard

Hi , thanks for the information. When I get back to the customer I'll try it again. Thank you.

Hi,

Turn the keyswitch On.
Pull out the floor inspection plate and rotate to get access to the controllers plugs.
Connect your Curtis handheld or laptop with Curtis software to the Traction controllers plug.
Go to Parameters > Combi AM Master > Hourmeter Settings > Maintenance Settings.
Change the "Reset Maintenance" to On. (When you change this parameter, it will toggle to On momentarily then switch Off again).
Turn the keyswitch Off.
Disconnect the Curtis handheld or laptop.
Wait at least 5 seconds before keying back On.
If the service light turned Off then the procedure has been completed correctly.

Any issues please go to the web site (BLey has shared these already... Thank you Appreciated). Hope this helps.

Thank you for the reply. I do have the Curtis handset but there are no current codes. I deleted the history on both lift and travel motor controllers also. This unit has an onboard analyzer that requires a 4 digit pass code to access the " Engage" system.

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.