Displaying & Reading Trouble Codes

Description:

If a system fault is detected, the LED indicator above the mode button depressed on the control head will flash for one minute. Diagnostic Trouble Codes (DTCs) will then be stored. DTCs are only stored when a system fault is present. History DTC(s) cannot be set except for DTC 09 (Low Freon).

To enter the diagnostic mode, push and hold the fan "up" arrow and fan "down" arrow at the same time for approximately 5 seconds.

The LCD (Liquid Crystal Display) will show "-00." Push "AUTO FAN" and the LCD will show any fault DTC(s) stored in the programmer.