Forum Discussion
dougrainer
Aug 05, 2016Nomad
j-d wrote:
Doug, Thanks for the clarification on Freeze Sensor. We've had only the mechanically controlled ones, like an old two-knob window shaker, both Coleman Mach.
Let me ask... Does the freeze sensor then put the compressor on a duty cycle, where it takes time out to keep frost from forming? I'd thought the non-ducted a/c units like ours were a little more effective in cooling a coach on a hot day, than ducted ones. If for no other reason that the ducting was small and up in a hot roof area. We can run our Mach 15 full time on high fan all day. Doesn't freeze over, and sometimes it'll actually cycle, but it doesn't time out on frost.
The reason ducted work better is because you can get cold air more evenly thru out the RV. The freeze sensor when it gets to the freeze part tells the control board to shut down the compressor. Once the Evap warms up enough to close the sensor the compressor comes back on. I believe RVP has a kit to install a freeze sensor on mechanical AC controlled units. Doug
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