Category Archives: Troubleshooting
Pack voltage is reading a different voltage than measured by a voltmeter
Possible Causes: In some situations the total pack voltage sensor calibration may drift and produce voltage readings that are higher or lower than the actual pack voltage over time. This only occurs when the BMS is used in applications with … Continue reading
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P0A04 – Open Wiring Fault (or “Open Cell Voltage Fault”)
This fault is a serious code that effectively disables the BMS and often causes many other fault codes to occur. When diagnosing errors, this error code should be corrected first. This error code indicates that the Orion BMS has determined … Continue reading
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P0A03 – Pack Voltage Mismatch Error
This error code indicates that the voltage measured by the total pack voltage sensor did not match the sum of the individual cell voltage measurements. This error is triggered when the difference in voltage between the two measurements exceeds the … Continue reading
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P0A80 – Weak Cell Fault
This fault is triggered based on thresholds programmed into the BMS profile that indicate when a cell is “weak”. While this error code is designed to indicate a cell is weak, this error is triggered when certain pre-programmed conditions are … Continue reading
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P0A0B – Internal Software Fault
This error code indicates that the Orion BMS has determined that an internal hardware fault has occurred. If this error message occurs, please download the associated freeze frame data and contact the factory or authorized dealer for assistance. Please save … Continue reading
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P0A0A – Internal Heatsink Thermistor Fault
This error code indicates that the Orion BMS has determined that an internal hardware fault has occurred. If this error message occurs, please download the associated freeze frame data and contact the factory or authorized dealer for assistance. Please save … Continue reading
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P0A09 – Internal Hardware Fault
This error code indicates that the Orion BMS has determined that an internal hardware fault has occurred. If this error message occurs, please download the associated freeze frame data and contact the factory or authorized dealer for assistance. Please save … Continue reading
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P0A12 – Cell Balancing Stuck Off
This error code indicates that the Orion BMS has determined that an internal hardware fault has occurred. If this error message occurs, please download the associated freeze frame data and contact the factory or authorized dealer for assistance. Please save … Continue reading
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P0AC0 – Current Sensor Fault
A current sensor fault is triggered if the analog voltages from the attached current sensor stray outside of the normal range or if the values from the 2 redundant current sensors do not match. The current sensor may be sized … Continue reading
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P0A1F – Internal Cell Communication Fault
This error indicates that the Orion BMS has encountered an error trying to communicate with the isolated circuitry that measure cell tap voltages. This error can be caused by external electrical noise if the BMS is not properly grounded or … Continue reading
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