290 Amberjack AC Thermostat Issue

DHebner

New Member
May 27, 2015
2
Maryland
Boat Info
290 Amberjack 2000
Engines
5.0L with Bravo II Drives
My AC is working fine mechanically but I think something is wrong with the thermostat. I can set the temp to below the cabin temp so the unit comes on but it only holds for about 10 seconds before it automatically scrolls up to the max temp of 99 degrees. Which obviously makes it cut off. If I scroll the set temp back down to a temp below the cabin it comes on and cools for about 20 seconds and then scrolls up to 99 again.

Has anyone heard of this? Any suggestions?
 

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