Evaporator. My bad.
2015 Forest River Georgetown XL
AC Model B57915.711J0 with a EasyTouch RV thermostat
On the thermostat info screen, it shows the temp.
Some info I found in the manual:
Freeze Fault: Temperature of inside coil has dropped below 30°F (-1°C). The compressor will turn off and the fan will run until the inside coil sensor temperature reaches 54°F (12°C). The compressor will then run again if required. This fault can mean the air flow is restricted, filter is clogged, outside coils are dirty, refrigerant is low, humidity is very high, or the sensor is bad if becomes a recurring problem. • Freeze sensor: The control board will report three errors for the freeze sensor. BR = bad reading (out of range), OP = open sensor, MS = missing sensor. These letters will show in the freeze sensor temperature location in place of the temperature.
I am getting no errors.
To make it even more interesting. I have 2 AC’s, this morning with both off the temp is the same 63°. I’m still leaning towards replacing the circuit board but not sure.