Displaying & Reading Trouble Codes
SELF-DIAGNOSTIC FEATURESIf the self-diagnostics feature of the automatic air conditioning system detects a fault while the system is operating, the "°F/°C" symbol to the right of the temperature number will flash very rapidly and the appropriate fault code will be produced by the control assembly microprocessor.
With the exception of Fault Code 09 (Low Freon), fault codes will not be stored in the microprocessor.
As soon as a fault has been detected, the control assembly microprocessor will use a default value (as a parameter value) until the fault is no longer detected.
ENTERING DIAGNOSTIC MODE
To enter the diagnostic mode, the "EXT TEMP" touch switch must be pressed and held while the "OFF" switch is then pressed to enter the command (normally within 5 seconds). Upon entry into the diagnostic mode, the LCD will display any fault codes that are present.