Jim, I had no light in the unit but the control still worked. When it started cooling again the light inside worked again. I think the cold caused the circuit board to start acting up. The RV tech told me that if the control panel did not work to put a 40 watt bulb near the circuit board in the outside compartment. Blocking the vents makes a hugh difference in the winter.
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Dennis & Linda Ward
Paola, Kansas
Montana 3735MK Legacy Edition
1200 watts of Solar
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