PC0L Error CodeUpdated 2 hours ago

PC0L Error Code: Outdoor Unit Low Ambient Temperature Protection

This is a low ambient temperature protection function. 

If the compressor is off and the outdoor ambient temperature (T4) remains below -31°F (-35°C) for 10 seconds, the system stops and displays a fault code. 

If the compressor is on and T4 remains below -40°F (-40°C) for 10 seconds, the system stops and displays a fault code. 

When T4 remains at or above -26°F (-32°C) for 10 seconds, the system exits protection mode.