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o If YES, and the problem has only happened once or twice for this
treadmill, dismiss it and clear the error logs.
o If NO, proceed with the tests below.
Raise elevation to 15%. Walk at a fast but comfortable pace on the
belt, and push off slightly against the treadmill handrail. Are you
able to generate an Error 15 relatively easily?
o If YES, replace the IFT drive and DB resistor.
o If NO, proceed with next step.
Test the IFT drive. Have someone run on the treadmill at moderate
speed (7 or 8 MPH) with the incline at 0%.Is it possible to induce
an Error 15 within 30 seconds?
o If YES, replace the IFT drive and DB resistor.
o If NO, proceed with next step.
Test the DB resistor. With power turned off, unplug DB cable from
IFT drive and then measure across the resistor with an ohmmeter. It
should measure 90 to 110 ohms. Is there high resistance or an open
circuit?
o If NO, and the problem has only happened once or twice for this
treadmill, dismiss it and clear the error logs.
o If NO (the resistor is good), but the problem has happened
chronically for this particular treadmill, check the line
voltage.
o If YES (the resistor is bad), replace both DB resistor and IFT
drive.
3 Replace the running belt.
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