9.23, 9.27 Treadmill
Page 4
Procedure 2.1 - Error Codes and Lower PCA Indicators
Error Codes:
03 - EEPROM Error: EEPROM checksum test error, when this error is consistently displayed,
the upper PCA is usually the cause. If displayed intermittently, the cause is typically
external, A.C. power spikes, for example.
26 - Speed Error: This error indicates that the speed control circuit is not receiving correct motor
speed pulses. This could be the result of incorrect speed, speed sensor failure, or drive
motor failure.
40 - Lift Error: This error indicates that the lift control system is not receiving correct analog
position information from the lift motor. This could be the result of lift motor connection
failure, lift motor potentiometer failure, lift motor failure or lower PCA failure.
Lower PCA Indicators: The lower PCA is furnished with seven LED indicators. Their names and
functions are listed below.
Power - The POWER LED should illuminate when the treadmill is powered “on”. The POWER
LED is in the 12 Vdc power supply and indicates the input to the power supply is
receiving voltage.
UP - The UP LED should illuminate when the incline is operating in the upward direction. The UP
LED indicates that operating voltage has been applied to the incline up relay.
DOWN - The DOWN LED should illuminate when the incline is operating in the downward
direction. The DOWN LED indicates that operating voltage has been applied to the
incline down relay.
PWM - The PWM LED should illuminate whenever the drive motor is in motion. The PWM LED
indicates that the PWM drive signal is being applied to the drive motor power controller
circuit.
LIMIT - The LIMIT LED indicator will illuminate when too much current is being demanded from
the drive motor power controller circuit. If the drive motor’s instantaneous current
exceeds 28 amps, the current limit circuit is activated. When current limit is activated the
drive motor current and speed can not be increased.
MOT DRV - Indicates a defective drive motor circuit. Typically caused by a component failure on
the lower PCA.
SHUTDOWN - If the drive motor current exceeds 28 amps for 3-5 seconds, the motor drive
signal is removed and the motor drive circuit is shutdown.
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