Error 44 - Un-Commanded Lift Motion; Description; Possible Causes; Possible Remedies - Precor TRM10/GEN06 Service Manual

Error 44 - Un-commanded Lift Motion

If you have performed all of the procedures above and have been unable
to correct the problem, search for solutions in the service bulletins
or call Precor customer service.

Description

The lift control system has detected that the lift is in motion without
a lift command having been issued. This can happen in one of two ways:
either the lift drive circuit has failed in a turned on condition or
the lift position sensor (lift position potentiometer or revolution
sensor) is sending an erroneous signal to the lift control circuit.

Possible Causes

1 The sensitivity of the 16-bit A/D converter has generated a false
error.
2 Poor or intermittent connection in the lift position sensor
(potentiometer).
3 Bad lift position sensor
4 Bad lower control module.

Possible Remedies

1 Due to the high sensitivity of the 16-bit A/D converter, vibration
during foot plant can cause the A/D value to change enough to
generate this error. This condition is most likely to occur while
the lift is not commanded to move. While the system software detects
this as an error code 44, it does not stop the lift system from
functioning normally. If this is the case the error should be
considered a nuisance error, and the error log should be cleared.
2 This is the most common cause of an error 44. Verify all wiring and
connections associated with the lift position potentiometer. Repair
or replace wiring or connections as appropriate. Because of the
nature of the revolution sensor an error 44 is rarely associated
with it.
3 Operate the lift in the diagnostics while monitoring the lift
position number being displayed. If the reading is erratic and makes
large changes in readings the lift position potentiometer is
probably bad. Replace the lift motor.
4 If there is actual lift motion without a manual or program control
lift command having been issued, replace the lower control module.
© Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law Page 64