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Topic-icon HEATER PA-28 151

  • Gregory Brown
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10 months 4 weeks ago #1228

The heater on my warrior does not seem to be working. The defrost works bur when i slide the heater lever, no heat comes out. checked the flapper valve and it works, also made sure the floor vents are open. Any Ideas

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10 months 3 weeks ago #1236

If the flapper is working correctly and the defroster is working, there must be a blockage in the ducting aft of the control. I suggest you get a strong flashlight and an inspection mirror to look inside the ducting to see of a creature decided to move in and build a nest.
If your mechanic has a borescope that will help view the inside of the heat ducting.
Please take pictures and let me know what you find.

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