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550ZTX Treadmill Owner’s Guide
Troubleshooting Guide
CARE AND MAINTENANCE
64
CARE AND MAINTENANCE
SYMPTOM CAUSE SOLUTION
Circuit breaker on
treadmill trips
when the power
cord is plugged
into wall.
Circuit breaker on
treadmill trips
when inputting
speed and starting.
A. Damaged motor.
B. Damaged or defective
motor power supply
board.
C. Damaged motor control
circuit board.
D. Restricted belt or
flywheel.
E. Treadbelt over-
tensioned.
Service required
Service required
Service required
Check and remove
obstruction or call dealer.
See adjustments in
Assembly Guide.
Computer display
LED’s do not
illuminate.
A. No power to treadmill.
B. Circuit breaker trip
C. Upper wire harness not
connected or not
completely connected.
Restore power at electrical
outlet or reset circuit
breaker if in “on/off”
position.
Reset Circuit Breaker.
Service required
Incline Motor and
tread motor will
not turn on.
A. Upper wire harness
damaged or not con-
nected or completely
connected.
Service required
Incline motor does
not operate but
the treadbelt
moves.
A. Incline wire harness
damaged or not
connected.
Service required
Scrambled digits
on computer
LED’s.
A. Damaged computer
board.
B. Upper wire harness
damaged or partially
connected.
Service required
Service required
Squeaking noise
from motor while
using the treadmill.
A. Poly V-belt slipping.
B. Motor brush noise
excessive.
Service required
Service required
TROUBLESHOOTING
GUIDE