This video shows how to reset Carrier comfortlink alarms on RTUs, obviously this unit has no alarms, but still let's me go through the motions. Remember diagnose the problem before resetting, don't just reset and run! Default factory password is 1111. Majority of the time the coils are dirty and throw a code, and just cleaning and power cycling them won't reset the code. I posted a different video on how to read out the codes fully on the marquee so your not scrambling looking for a book to figure out what the abbreviation means.

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