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TABLE 7. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
NOTE – System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidi-
cation). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are
displayed. Alert codes are also displayed on the S30/S40 thermostat.
Alert
Codes
Inverter
Code
Inverter LED Flash Code
(number of ashes)
Priority Alarm Description Possible Causes and Clearing Alarm
Red LED Green LED
E601 N/A N/A N/A Minor
Outdoor unit has been cycled
OFF on low temperature
protection.
Low temperature protection: Outdoor unit will not operate when
the outdoor temperature is at or below 4°F (20°C). If the unit is
operating and the outdoor temperature drops below 4°F (20°C),
the unit continues to operate until the room thermostat is satised
or the outdoor temperature drops to 15°F (26°C). Outdoor unit
ambient sensor provides temperature readings.
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