dss595, that strange part is unfortunately normal for that AC. Another reason I got away from them. With the Coleman Mach, you can select Auto, then high or low fan, so it will only use that fan speed when on. With the newer dometic, if you put in auto, IT decides what fan speed it wants, which sometimes can lead to problems. Turns on, then a while later, fan shuts off (compressor keeps running), fan turns back on, maybe in high, maybe in low. Sometimes it gets confused. It's programmed to run high speed down to a certain temp, then swap to low speed, then off, if it makes it that far. I went through several control boxes and eventually just left it in "fan on" all day, then gave up completelly and vouched to never own one again. Another crappy thing with the dometic is the new 3 wire set up. If you're lucky enough, the factory ran 7 wires, only used 3, and you can put what you want up there later if you want. If only 3 wires, your stuck with it, or up for some modifying and wire runs.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.