Troubleshooting error codes, Troubleshooting heart rate – Precor Low-Impact Threadmill M9.57 User Manual
Page 68

Owner’s Manual: Advanced Programming and Troubleshooting
66
Troubleshooting Error Codes
If any error codes appear in the center display, turn the 
unit Off and On. If the error continues to occur, call 
an authorized service person for assistance. Refer to 
Obtaining Service.
Troubleshooting Heart Rate
Table 9 may help you understand and troubleshoot erratic 
heart rate readings.
Important: A heart rate can only be detected when the 
Precor heart rate receiver is properly installed in the display 
and the treadmill is turned On. You must also wear the chest 
strap or hold on to both touch-sensitive handrail grips. 
To conduct electrical impulses from a user’s heart, both 
touch-sensitive handrail grips must be grasped firmly 
for five to ten seconds. Usually, the concentration of salts 
in a person’s perspiration provides enough conductivity to 
transmit a signal to the receiver in the display console. 
However, because of body chemistry or erratic heartbeats, 
some people cannot use the heart rate feature. A chest strap 
may provide better results. Refer to the QuickStart Card for 
proper placement of the chest strap.
Table 9. Erratic heart rate readings
What appears on 
the display 
Cause
What to Do
Nothing
The heart rate 
receiver is not 
installed or it 
has been 
disconnected.
To receive Customer 
Support, refer to 
Obtaining Service.
Hr
A signal is being 
detected, but the 
transmission 
requires more 
time to establish a 
heart rate.
Be sure the chest strap 
is in direct contact with 
your skin. If using the 
touch-sensitive handrail 
grips, use both hands and 
make sure your hands are 
moist, not dry.
Pulsing HEART
The LED heart 
blinks when a heart 
beat is detected.
If the LED is pulsating, 
it indicates that the 
heart rate equipment is 
working properly.
