Infrequently through the years, when I happened to be near a Hi-Lo dealer, I'd stop and pick a Hi-Lo sales brochure from that year. I only have eight, and one is from 1990! Joan, this is your lucky day!
So according to the brochure, two versions of the Model 229 "FunChaser"
were produced in 1990. The "L" version had a sofa in the forward end that converted into a double bed, and a "D" version that had a forward end dinette table and bench seats that converted into a double bed. Socal is correct about how to interpret the "229."
That year Hi-Lo offered the following five basic models: 209 FunMaker, 229 FunChaser, 259 Voyager, 279 Bon Voyage, & 339 Le Grand. The FunChaser, Voyager and Bon Voyage were each available in several style variations, each with its own designator letter... similar to what I described above for the FunChaser.
Who knows why Hi-Lo altered its traditional model numbering system to omit the zero that year. Until looking at the brochure, I'd have agreed with Sam and thought Joan's should be a Model 2290.
I plan to scan all these brochures and enter them into the HTF Library.
Joan, after reading through the brochure, it looks to me like you've found a terrific trailer with a great floor plan! Hope you have a lot of fun with it!
As a point of interest, I have two brochures from 1991. One for what we would now call their "Classic," line, although they didn't label them as such. The other is for their "FunLite" series. Hi-Lo reversed the Model number system for those FunLites... they offered three Funlite Models: 9119L, 9121FLL, and 9123D. Go figure...