The most common errors with the digital units are indicated with actual error codes in the timer LED, the following is a list of the most common error codes.

 

Error Code Description Error Determination probable cause
1 Bed temp is greater than 139 degrees the motors are running and the bed temp is increasing past 139 degrees Thermistor shorted, loss of heater control, disconnect power and reset. (Call for service or board repair.)

 
4 The heater is on, but the bed temperature is not rising the motors are running, the heater voltage is 100% but the bed temp is not rising or rising slowly. the thermistor is open, the heater is open and/or the snap disc is open.
5 The heater voltage is too high The measured heater voltage is > nominal + 20% Triac is self commutating or shorted,  possible heater open. order here
7 The motor current exceeded maximum limit Steady state motor current > 10 amps Motors worn, replace and recalibrate
       
8 The motor current is too low Motor current is less than the nominal - 30% Replace motors and do calibration. check motor fuse, triac not firing
9 The motor current is too high Motor current greater than the nominal + 30% Motor fuse blow, motor(s) worn, replace and calibrate. one motor is worn and air is blowing out.  triac or triac driver
13 The machine has not been calibrated. The calculation in the calibration field has failed the boundary check. Run the machine calibration.
14 Clock read error serial port not running or clock not running call for repair, crystal failure
15 Line frequency too low running timer value greater than 45 hz (should be 30) line frequency failure, check rectifier on board,  call for service or repair of board.
16 Line frequency too high running timer value < 65 hz check line frequency, crystal failure
C0 Calibration warning, the span of the motor speed has been expanded and shifted down Total motor speed span  changed check low end span, set the span again
C1 Calibration warning, the span of the motor speed has been shifted up Total motor speed span  changed check High end span, set the span again
C2 Calibration error  Motor speed span error Low end of the motor speed span was set to a higher value than the high end of the motor speed span Set the span again
C4 Calibration error, overflow occurred while calculating K1 K1 is the first order coefficient used to calculate the nominal motor current, the error occurred because: the motor current is too high,  replace motors, set span again
C7 Calibration error, Motor current too low the measured motor current > boundary limit Motor current too low, replace motors with proper low current spec motors.
C8 Calibration error, Motor current too High the measured motor current > boundary limit Motor current too High, replace motors with proper low current spec motors.

 

Heater problems?,   If your digital system is not heating or is only heating to 95-99 degrees, then there is probably a heater or snap disc problem. Open the front panel and disconnect the long black interconnect.  then measure the red wires for a reading of 15-19 ohms.  in the measurement is open, then isolate between the snap disc and the heater.  the snap disc is located just below the motor(s). Connected in series with the heater.  if the snap disc is open, replace and retest. if the heater is open, well.......do the same.  that should solve the problem.

 

If you have an error code not listed here, please call 800-479-2987 for further tech support