Thermostat sensor reading skewed by weather
I have a Birkshire 400BH 2014.
It seems that my remote thermostat inside reading in zone 2 (bedroom) is heavily skewed by temperature outside. For example, if sun is shining on the motorhome wall and it gets hot outside, the thermostat will show that it is 90F inside, while it is actually 65F inside (measured by different thermometer) because air-conditioner keeps working in accordance with high thermostat sensor reading. Alternative, at night, when outside temperature drops down to 60F, the thermostat shows inside temperature of 70F while it is actually 77F in the room. When the temperature outside is consistently cold or hot, then I can set a thermostat to a certain temperature (not the actual desired temperature, but the one lower or higher) and it will keep the room at desired temperature. Zone 1 works normal is all temperature conditions and temperature on thermostat correspond to the temperature in the room independently of outside temperature.
Basically, if it is cold outside the thermostat sensor reading of inside temp is significantly lowered and if it is hot outside, the reading of inside temperature is significantly increased. It almost seems that the sensor is measuring the temperature of the wire that it is connected to instead of measuring temps inside the room.