Heart Rate Monitor Troubleshooting

Hand Held Heart Rate Does Not Work

1. Place your hands on the HHHRHand Held Heard Rate (Hand Held Heart Rate) contacts, making full contact with both top and bottom contacts for at least 15 seconds.
   1. If the unit displays a heart rate, no problem exists.
   2. If the unit does not display a heart rate value within this time, continue with next step.
2. Set the ON/OFF switch to the OFF position, wait 10 seconds, then set the ON/OFF switch to the on position and repeat step 1.
   1. If the HHHR functions correctly, then the processor on the HR board was in a "latched-up" condition, and cycling the power cleared the condition.
   2. If the HHHR does not function correctly, continue with step 3.
3. Verify that the HHHR board has the correct operating voltage. Connect a voltmeter to VCC and Ground on the Power/Signal connector. The voltage should read between 4.5 and 5 Vdc.
4. Verify the wiring of the HHHR contacts (top left, bottom left, top right, bottom right) go to the proper pin on the Grip/Contact connector, that none of the lines are shorted,
   1. If NO, Correct the wiring error.
   2. If YES, Continue.
5. Verify that the grip connections are free of corrosion.
   1. If NO, replace the corroded HHHR grips.
   2. If YES, continue.
6. Verify that there is a ferrite bead around the cable from the HHHR board to the upper PCAPrinted circuit assembly, generally referred to as either an upper PCA or lower PCA.. (GEN-06 treadmill only)
7. Verify that the unit does not display a heart rate with only one hand on a grip. This would indicate static damage, and require replacement of the heart rate board.
8. If the above procedures do not correct the problem, replace the heart rate board.

Wireless Heart Rate Does Not Work

1. Verify wireless heart rate with a known good chest strap transmitter or test transmitter. If the heart rate reading is erratic, incorrect, or absent, continue.

NOTE: It may be necessary to lean in closer to the console at first to allow receiver to begin to acquire a heart rate signal.

2. Verify that the HHHR board has the correct operating voltage. Connect a voltmeter to VCC and Ground on the Power/Signal connector. The voltage should read between 4.5 and 5.5 Vdc.
3. Identify other sources of wireless interference signals in close proximity to the unit (such as Wi-FiWireless Fidelity - a term defined and Trademarked by the Wi-FiOpen Alliance (formerly known as the Wireless Ethernet Compatibility Alliance - WECA). Wireless LAN equipment carrying the Wi-Fi logo have been interoperability tested for compatibility with one (or more) 802.11 standards, and certified by the Wi-Fi Alliance to be sold under the Wi-Fi brand. networks, cordless phones, etc.).

NOTE: Wi-Fi network is transmitting in close proximity to the treadmill the heart rate system MAY pick it up. Using an ohmmeter, verify that upper and lower PCAs have a good electrical path to chassis ground.

4. If the preceding procedures do not correct the problem, replace the heart rate board.
5. Possible sources of interference signals include, but not limited to:

• Wi-Fi Network Routers
• Cordless Telephones
• Cell Phones
• Electronic Dog Fences
• Garage Door Remotes
• Noisy ACAlternating Current: electric current which periodically reverses direction between positive and negative polarity. feeds
• Florescent light ballasts

See Also

System Troubleshooting Procedures