Bought a Costway for the truck (Have a Unique Off Grid 60L in the boat which I am very happy with) Been test running it in the house. It appears to cycle predictably every 20 minutes with a 4 degree temperature drop over that 20 minutes. Seems that it happens regardless of ambient temperature which has varied 10-15 degrees while testing. It also followed that same cycling pattern with or without the transit bag which I assumed would provide more insulation. (Smittybilt bag is a perfect fit) It drops 1 degree from the set temperature at 15 minutes and 2 more degrees in the last five minutes and then kicks on. Has anyone monitored the cycle frequency on their Costway? I've got a strange impression that it is cycling on a timer program and not a temperature sensor. Am I nuts or has anyone else noticed this. Our Unique 60l does not cycle so predictably. It doesn't seem normal to me that it would drop only 1 degree in 15 minutes and then 2 more degrees in five minutes. That process seems programmed to me. I have not however, timed the length of the cycles that it runs. Perhaps it is programmed to come on every 20 minutes but also programmed to shut off at the temperature you set which would make the length of time to cool it vary.
Edit: I just timed a cycle at 3:35
Edit: Ran a draw test over a 24 hr period set at 36 degrees with transit bag on. .875 amps per hour.