Owner`s manual
2008 AFG Service Seminar [rev 1.3] | 25
Section Two | Voltage Checks
>> Horizon Fitness “5-Step” Treadmill Diagnostic Process
1 | Proper supplying power to treadmill.
• Make sure the treadmill is not on an extension cord, surge protector or GFCI circuit. Extension
cords and surge protectors create energy loss, which prevents proper voltage from being
supplied to the treadmill.
• Make sure the treadmill is on a dedicated circuit. Horizon Fitness recommends a 20 amp
dedicated circuit, but a 15 amp dedicated circuit may be sufcient.
• Make sure that proper voltage is being supplied from the wall outlet.
• Disconnect the treadmill power cord from the wall outlet. Using an AC voltmeter, verify that the
proper AC voltage is present at the wall outlet. Nominal 120 volts AC may vary between
approximately 105 volts AC and 135 volts AC. If the AC voltage is missing or incorrect, check
the AC service or consult an electrician.
120 VAC
2 | Proper Wiring
• Verify that all wires are secure and attached in the correct position.
(Reference Wiring Diagrams and Scematics section p27.)
• Verify that there aren’t any pinches or cuts in any of the wires, especially the console cable
connecting from the motor control board to the upper board. Replace any wires that are
pinched or cut.
The following steps are provided as routine checkpoints when diagnosing problems on
a Horizon Fitness treadmill. If followed correctly, these checkpoints should help diagnos
the majority of problems that may be encountered.
WARNING
Hazardous voltages will be tested in the following procedure. Exercise extreme caution
when performing these procedures. Do not connect or disconnect any wiring,
connectors, or other components with the power applied to the treadmill.