Error 42 - Lift Position Value Out Of Range; Troubleshooting Procedure; Description; Possible Cause - Precor TRM10/GEN06 Service Manual

Error 42 - Lift Position Value Out of Range

Troubleshooting Procedure

Set the treadmill's on/off switch in the off position. Visually inspect
the lift motor's wiring and connector for any broken or improperly
crimped connections. With an ohmmeter, measure between terminals 1
(white) & 5 (black) and 1 (white) & 6 (red) of the INCLINE connector.
Both readings should be approximately 12  (Ohms) for a 120VAC lift
motor and approximately 24  (Ohms) for a 240 VAC lift motor. If
either reading is significantly high or open replace the lift motor.

Description

This error code monitors the physical lift position via a lift position
potentiometer that mechanically tracks the lift's physical position and
sends a DC voltage back to the control system. The voltage is converted
to a 16 bit digital number. This number is then used to represent the
lifts physical position. Software sets upper and lower numerical
limits. If the lift position number is found to be outside of the set
limits, error 42 will be displayed.
When troubleshooting an error 42 it is important to be aware of the
actual physical position of the lift when the error occurs. If the lift
is physically out of range or jammed you must first determine why the
lift is physically out of range. When the lift is out of range the
error 42 is a secondary symptom and the problem should be treated as an
error 40 instead of an error 42.
The A/D value for the home position (0%) is approximately 6200, and its
A/D value at its lowest incline (-3%) is approximately 3200

Possible Cause

1 Incorrect lower control module part number.
2 Bad or intermittent connection in the lift motor connector.
3 The lift motor requires re-calibration.
If the lift had been calibrated correctly at the time of installation and
working for some period of time it would be highly unlikely (if not
impossible) for lift calibration to go out of calibration on its own. It would
be more likely that something has broken causing the A/D value to be
wrong.
4 The lift motor potentiometer is bad.

Possible Remedies

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