Horizon Fitness CST 3.5, Service Manual, Page: 44 / 67

44
44
W
ARRANTY
SAFETY
INSTRUCTIONS
RECOMMENDED
TOOLS
MAINTENANCE
PROPER
HEART
RA
TE
USAGE
5-STEP
DIAGNOSIS
PROCESS
VOL
TAGE
CHECKS
AND
LED
DIAGNOSIS
WIRING
DIAGRAMS
AND
SCHEMA
TICS
ENGINEERING
MODE
TROUBLESHOOTING
SPARE
PARTS
REPLACEMENT
Symptom
Possible Cause Test Procedure
Repair
Elevation motor will incline
and decline without com-
mand.
Elevation motor starts run-
ning as soon as the power is
turned on. Constant down.
Elevation motor does not
Reach minimum or maxi-
mum settings
No elevation function.
Elevation is stuck at the
highest position as soon as
power is applied
Failed elevation motor.
Failed motor control board
(MCB).
Elevation motor is not calibrated
correctly or failed incline motor.
Failed console cable.
Failed elevation motor.
Failed upper board.
Failed lower board
-Verify there are no pinches or
cuts on the elevation wires.
-Verify the connections of
above wires.
Turn power on.Do not press
start. Wait 30-60 seconds and
see if motor is hot.Use caution.
Motor can get very hot.
Verify elevation motor shaft
position. (
Reference elevation
motor replacement in Spare
Parts Replacement section.)
Check voltage and continuity
of console cable. (
Reference
Voltage Checks and LED
Diagnosis section.
)
Press start and check to see
if the down LED is constantly
lit on MCB. Enter engineer-
ing mode (Eng1) and press
start. Repeatedly increase the
incline. (
Reference Voltage
Checks and LED Diagnosis
section.
)
Press start and check to see
if the down LED is constantly
lit on MCB. Enter engineer-
ing mode (Eng1) and press
start. Repeatedly increase the
incline.
(
Reference Voltage Checks
and LED Diagnosis section.
)
If the incline went into the
highest position as soon as
power was applied without
start being pressed.
Replace elevation motor.
(
Reference Elevation Motor
Replacement in Spare Parts
Replacement section.)
Replace MCB. . (
Reference
Motor Control Board Replace-
ment in Spare Parts Replace-
ment section.)
Replace elevation motor.
(
Reference Elevation Motor
Replacement in Spare Parts
Replacement section.)
Replace console cable. (
Refer-
ence Console Mast Cable
Replacement in Spare Parts
Replacement section.)
If the up LED flashes but the
elevation does not increase,
replace elevation motor and
console cable. (
Reference
Elevation Motor page 56 and
Console Mast Cable Replace-
ment in Spare Parts Replace-
ment section.)
If the up LED flashes and the
elevation increases, replace
upper board. (
Reference Upper
board/Reed switch Replace-
ment in Spare Parts Replace-
ment section.)
Replace lower board.
Elevation Troubleshooting
TROUBLESHOOTING