What happens if the AC evaporator ices over?

Question

I am thinking of replacing the air conditioning evaporator temperature sensor in my 2011 ford fusion with a resistor, since the dash must be removed to replace the sensor. The warning that goes with this procedure is that if you use the air conditioner in very cold weather the AC evaporator may ice up. What harm could come from the evaporator freezing ? maybe water will build up behind the dash leading to a musty smell?

blacksmith37 · Accepted Answer

If the evaporator becomes iced , much less or no air will blow through it an the AC will not cool the car. It probably will not "harm" anything , the AC will just work poorly , likely including the defrosters.

Correct answer by blacksmith37 on July 14, 2021

What happens if the AC evaporator ices over?

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