Re: Air conditioner serial numbers
That doesn't work for a LM 365. Everything is centrally ducted. There are no "distribution boxes".
When this question came up before, IIRC, you need to call HL with your VIN number. They should be able to tell you what the serial numbers are.
BTW, TheWolfes, if you're concerned about warranty work, most folks here simply call Dometic with their VIN number and purchase date. Dometic has been really good about working directly with HL for work authorizations and getting approval for local mobile tech (Dometic-certified, of course) to do the work. There still may be a small service fee though.