True Fitness 350-750 User Manual
Page 11
Symptom
Probable
Cause
Corrective Action
Recommended Tools
ELEVATION
NOT
FUNCTIONAL
( E1 ERROR)
Improper grounding
/ Calibration
(May
cause unit to
drift up & down
without command)
Unit is stuck at full
incline
Defective Start
Capacitor
Defective PWM
• Test 110VAC outlet for proper
grounding
• If unit has not been calibrated –
calibrate
• Ensure that incline cables are secure on
PWM
--------
• Verify the lower limit switch is properly
connected to the PWM
• Remove the LLS wire from the PWM
and short the two posts of the connector
together with an alligator clip. Cycle the
power. If the treadmill lowers itself
then replace the lower limit switch.
• Perform Incline potentiometer
calibration procedure (page 16)
• If incline nut is stripped- replace incline
nut
--------
• Do Up/Down command LED’s light?
• If No- skip to defective PWM section.
• If yes- does motor hum with no
movement?
• If yes- check the leads to the capacitor
for breaks, if no breaks- replace
capacitor.
• If No- replace PWM.
--------
• If no Up/Down LED’s light check
continuity on data cables.
• If cables are good- replace Upper Panel.
• If cables bad- Replace data cables.
Multi-meter
Alligator clip
Note:
All trouble
shooting should
be performed in
calibration
mode.
Page 16
Support Services 800-883-8783
Mon-Fri 8:30am-5:00pm Central Time Zone
Fax: 636-272-7148
Page 9