Welcome to the forum.
For the first item, make sure your thermostat is set to AUTO and not HIGH or LOW for fan speed.
I'll leave the second item to those who have experienced this problem.
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Now: 2019 Winnebago 2500FL w/e2 WDH;Sold: 2015 Bullet Premier 19FBPR (shown)
2012 Ford F-250 Lariat Super Duty Crew Cab (gas 6.2 L, 3.73 gear ratio 2WD, 172" WB)
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