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If you wish to get some details; check the site linked here. Pull up older posts for treadmills . Surf the site with patience. http://electro-medical.blogspot.com/
Precor Error 27, Too Much Drive Motor Current
Probable Cause
1. The running belt and/or deck are badly worn.
2. Drive motor is shorted or de-magnetized causing a high power demand.
Corrective Action
Check the amp draw using a clamp on AC volt-amp meter during loaded and no load conditions and compare values to a similar treadmill that is known to have a good running belt and deck. Replace the belt and/or deck if necessary. Don't forget, some units have a double sided deck which means it may be flipped over rather than replaced if it has an unused side.
Test unit with a known good drive motor. Replace drive motor if necessary.
Precor Error 44, Un-commanded Lift Motion
Probable Cause
1. Intermittent or bad connection in the lift position sensor(potentiometer).
2. Lift position sensor (potentiometer) is bad.
3. Lower PCA is bad.
Corrective Action
Bad or intermittent connection of the lift position sensor (potentiometer) is the most common cause of the error 44. Inspect all wiring and connections related to the lift position sensor (potentiometer). Repair or replace wiring connections as necessary.
Monitor the lift position number displayed while operating the lift in diagnostics mode. If the reading makes large changes or is erratic, the lift position sensor (potentiometer) is likely bad. Replace the lift position sensor (potentiometer) or lift motor if the lift position sensor (potentiometer) is internal to the lift motor.
If the lift moves without any command entered either manually or through a program, replace the lower PCA.
Press Enter,speed up and speed down simultaneously. Then enter to view error buffer . press quick start/pacer-stop simultaneously to reset error buffer log. Hope this helps
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