Precor Error Code 47, 48 High Battery Charging Voltage or Current

Mar 15, 2022

Applies to Chrono bike

Issue symptoms

Error 47 (High current)

Battery charging current is or has been detected as too high. The error is only detected or cleared while pedaling because, when pedaling, the generator SHOULD be charging the battery.

Error 48 (High voltage)

Battery voltage is or has been detected as too high.

Note: The battery fuse should be checked for all battery problems. One symptom of a bad fuse, or bad battery, is the console will immediately power down when pedaling has stopped.

Note:  If used, the external charger will give erroneous readings and needs to be unplugged for the below checks.

Troubleshooting steps

Error 47

1. Run the Battery Amp service test to measure the real-time charging current WHILE pedaling above 55 RPM. Should read 0.32 amps.
2. Check the battery fuse, if the battery voltage stays constant (approximately 7.0 VDC) and the generator and battery currents stay at zero.
3. Verify the generator voltage is adequate by selecting the Generator Voltage and Generator Amp tests. While pedaling at 60 RPM, the generator voltage should read approximately 9 VAC and the generator amperage should read 0.40 amps.
4. If the battery charging current is high when pedaling, the LPCA may have a problem with its charging circuit and needs to be replaced.

Error 48

1. Run the Battery Voltage service test to measure real-time voltage. When not pedaling, the battery should read maximum 6.6 VDC. When pedaling above 55 RPM, the maximum voltage should be 7.5 VDC.
2. Check the battery fuse if the battery voltage remains constant (approximately 7.0 VDC) and the generator and battery currents remain at or near zero.
3. Verify the generator voltage is adequate by selecting the Generator Voltage test. Generator voltage should read approximately 9 VAC at 60 RPM.
4. If the battery voltage doesn’t change or is always too high while pedaling above 55 RPM, the LPCA may have a problem with its charging circuit and needs to be replaced.