Troubleshooting Heart Rate - Precor Energy Series Service Manual

Troubleshooting Heart Rate

The hand held heart rate system is actually a dual system, that is, it can accept a heart rate
signal from either the hand held heart rate contacts on the unit's handlebar or from a Polar
heart rate chest strap transmitter. The PCA is configured for hand held priority. That is, if both
a chest strap and hand heart rate signal are being received, the system will accept the hand
held signal and ignore the chest strap signal. If a hand held signal is not being received, the
system will accept the chest strap signal.
Note:
There are four typical failure modes for the hand held/chest strap heart rate system. They are:
- Hand held is normal - no chest strap reading;
- No hand held reading - chest strap normal;
- No hand held or chest strap reading or constant
- Intermittent readings when neither hand held or chest strap are in use.
Normal hand held reading - No chest strap reading
1. Verify that a chest strap signal is not being accepted with either a Polar heart rate test
transmitter or a known good chest strap transmitter. If this reading is good, skip to step 3.
2. Using a known good Polar heart rate chest strap, verify that the heart rate operates with the
known good chest strap. If the known good Polar chest strap does corrects the problem,
replace the original chest strap transmitter.
3. If the above procedures did not correct the problem, replace console.
No hand held reading - Normal chest strap reading
4. Verify that a hand held signal is not being accepted by firmly grasping both the right and left
hand held contacts on the handlebars. Cover as much of the contact surface area with your
hands as possible (without moving your hands), you should receive a heart rate reading within
ten seconds.
5. If the hand held signal is now being accepted, something in the near vicinity is radiating RF
(radio frequency) energy that is being received by the chest strap portion of the heart rate
PCA.
6. If a hand held signal still not being accepted, replace the console
No hand held reading - No chest strap reading
7. Verify that either a chest strap signal or a hand held signal is being accepted with either a heart
rate test transmitter or a chest strap transmitter.
8. If neither a chest strap signal or a hand held signal is being accepted, replace the console
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