Error 15 - A.c. Input Voltage Too High; Description; Possible Causes; Possible Remedies - Precor TRM10/GEN06 Service Manual

Error 15 - A.C. Input Voltage Too High

Description

This error monitors the AC input voltage. If the AC input momentarily
reaches the upper limit, an error 15 will be logged. The upper acceptable
input voltage limit is 132V AC on 120V AC systems or 264V AC on 240V AC
systems.
When the treadmill is used by a vigorous exerciser walking or running at
steep incline, the AC motor can become a generator, forcing power
backwards into the IFT module.
internal reservoir, called the Bus Voltage, to rise to the point of
damaging the drive were it not for the DB (dynamic brake) resistor, which
automatically switches on to absorb it.
Error 15 is an indication that the Bus Voltage somehow rose too high,
either because the DB system wasn't functional or because the Bus Voltage
power was more than the DB system could absorb at once.
reservoir is also fed by the input (line) voltage, so it is also possible
that a temporary line voltage surge could result in an Error 15
condition.

Possible Causes

1 AC input voltage transients. Transients can be caused by lightning
strikes or by other pieces of equipment sharing the treadmill's AC
power.
2 Lower control module failure, or dynamic braking resistor failure.
3 Sticky substances on the underside of the running belt causing high
current.

Possible Remedies

1 Verify that the AC grounding is good at the treadmill's AC outlet.
Verify that the treadmill is operating on a dedicated 20 amp branch
circuit. This condition would require a licensed electrician to
correct the problem.
2 This could be either the lower control module or the dynamic braking
resistor.

Check error logs to determine Error 15 frequency.

Has this continued to happen for this treadmill, or was it a one-
time event?

Could it have happened when a user intentionally pushed against the
handrail, back-driving the motor for a sustained time?
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This excess power would cause the IFT's
The power
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