Changed mine out today in the ACE 30.3. I used the Coleman Mach model (8330-3862) that matches up with the old analog one. The wires were identical colors, and the screw holes were the same, so was a simple install. Took me about 10 minutes. Everyone else who had used it said it was a two degree range - that is exactly what I got. With heat on and temp set to 73, it turned on at 72 and shut off at 74. With A/C on I set temp to 72. It turned on at 73 and off at 71. I'm anxious to get on our next trip (three weeks from now) and see how it maintains the cabin comfort through the night without all the swings.
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Wayne & Jo Roe
Retired USAF
Thor ACE 30.3
FMCA #F479085
Good Sam #848205704
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