Treadmill Calibration 'Fail' Messages - LifeFitness GO CONSOLE Service Manual

Treadmill Calibration 'Fail' Messages

Auto-Calibration Failures
Whenever you have a calibration 'Fail' please note the error message that is listed and any other information listed any-
where on the console display. Be sure to try calibration a second time prior to proceeding with any diagnosis steps.
The following are the possible messages that can occur related to a fail calibration, the errors de nition and also possible
solutions.
PWM Errors
MIN PWN TIME
HALF PWM TIME
MAX PWM TIME
De nition:
During the calibration procedure, the console outputs a speci c PWM and expects both an "Acceleration to a speed
range" as well as a "Time to meet this prede ned feedback." These errors all relate to PWM timing.
Probable Cause / Solution =
Anyone of these three errors is caused by the following problems and/or failures:
1. MIN PWM TIME is always caused by a bad speed sensor, disconnected speed sensor or stalled belt/motor.
2. HALF OWM TIME - MAX PWM TIME is caused by a dirty optical wheel on the speed sensor or some type of subtle
loading of the main belt drive system.
3. A pinched, damaged or improperly connected cable between the motor controller and the console.
MIN PWM RANGE
HALF PWM RANGE
MAX PWM RANGE
De nition:
During the calibration procedure, the console outputs a speci c PWM and expects "Acceleration to a speed range."
This error denotes that the console required a higher PWM output to get to a speci c speed range.
Probable Cause / Solution =
1. The HALF PWM RANGE error is caused by some type of subtle loading of the main belt drive system.
2. The MAX PWM RANGE error is caused by some type of subtle loading of the main belt drive system or a minor differ-
ence in motors.
3. A pinched, damaged or improperly connected cable between the motor controller and the console.
Note: If there appears to be no issue with the loading of the main drive belt system, there is a "Max Speed Pot" located on
the Motor controller labeled R122.
This can be adjusted CW in 5% increments to increase the overall dynamic speed range. Note that if this adjustment is
made and then a different error code is displayed upon re-calibration, then there is likely a subtle loading somewhere
within the drive train.
Elevation Errors
MIN ELEV TIME
MAX ELEV TIME
De nition:
During the calibration procedure, the console outputs speci c elevation angles and reads the potentiometer on the incline
motor. If this communication is not received by the console or if values are different, then this error will occur.
Probable Cause / Solution =
1. A pinched, damaged or improperly connected cable between the motor controller and the console.
2. A disconnected Potentiometer cable on the incline motor.
3. Mechanical binding within the elevation mechanics (life frame).
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