Service manual

Treadmill
will not
elevate
Proceed to
error code
flow chart.
Yes
Error code
present?
Perform
keypanel
test.
Replace
controller
assembly.
Yes
Key test fail
Check and free
rack gear.
Yes Rack gear
jammed?
Replace fuse
and retest.
Yes
F3, 4,
5, or 6 fuse
blown?
CAUTION!
Disconnect
power and wait
for high voltage
indicator to go off.
Remove grade motor
connector at J2 on
VSD PCB. Place meter
across J2 pin 2 and 4,
THEN connect
treadmill power.
Press the Up,
then the Down
keyonthe
controller.
DC
voltage approx.
50 VDC?
No
Yes
No
No
Adjust limit
switches and
retest.
Zero ohms?
Check limit
switch continuity
between J1 pin
1 and 3, then
pin 4 and 6.
Replace VSD
CAUTION!
Disconnect
power and wait
for high voltage
indicator to go off.
Replace grade
motor.
No
Yes
No
No