Chapter 6: Alarms and System Failure Codes
System Failure Codes
6-14 Service Manual
6.2.4 System Failure 3
System failure 3 indicates: During ADC calibration, the software detected a channel out of range.
6.2.5 System Failure 5
System failure 5 indicates: The volt reference is out of the 1.171V - 1.259V range.
6.2.6 System Failure 6
System failure 6 indicates: Defective overtemp DAC circuit on the control board.
6.2.7 System Failure 7
System failure 7 indicates: 1.0 V Thermistor reference voltage is out of 0.951V - 1.049V range.
Cause(s) Action(s)
During system calibration,
J1, J2, and J4 were not
unplugged, or calibration
jumper JP1 is not installed
properly.
Before calibrating, make sure J1, J2, and J4 on the control board are
disconnected. Verify JP1 is correctly positioned. (Refer to system
calibration instructions.)
Defective circuit on control
board
Replace the control board.
Cause(s) Action(s)
System calibration
required
Perform system calibration.
Defective control board Replace the control board.
Cause(s) Action(s)
System calibration
required
Perform system calibration.
Defective control board Replace the control board.
Cause(s) Action(s)
System calibration
required
Perform system calibration.
Defective control board Replace the control board.