...manual to determine any special service requirements etc. eg cleaning, maintenance, serviceing etc. I suspect the a/c is probably around 10 yrs old. It was in the house when I bought it. Please help. Your message says "We found your manual", but the units listed do not indicate that my unit is covered. Are these units ie ASU15RLQ etc similar to or just branded differently? My unit AST14RVACW is a FUJITSU a/c, 3850w cooling, 4800w heating Model. PLEASE HELP. Bert R.