| Schumacher SC-200ATroubleshooting Guide |
| PROBLEM | POSSIBLE CAUSE | SOLUTION |
| Battery clips do not spark when touched together. | The charger is equipped with an auto-start feature. It will not supply current to the battery clips until a battery is properly connected. Meaning, the clips will not spark if touched together. | No problem; this is a normal condition. |
| The charger is making an audible clicking sound. | Circuit breaker is cycling. | The settings may be wrong. Check the charger settings. |
| Battery is defective. | Have the battery checked. |
| Shorted battery cables or clips. | Circuit breaker cycles when current draw is too high. Check for shorted cables or clips and replace if necessary. |
| Severely discharged battery, but otherwise it is a good battery. | The battery may not want to accept a charge due to a run-down state. Allow charging to continue until battery has a chance to recover sufficiently to take a charge. If more than 20 minutes, stop charging and have the battery checked. |
| The charger is making an audible clicking sound. (continued) | Reverse connections at battery. | Shut the charger off and correct the lead connections. |
| Charger makes a loud buzz or hum. | Transformer laminations vibrate (buzz). | No problem; this is a normal condition. |
| CHECK BATTERY (red) LED is on. | Clips are not making a good connection to the battery. | Check for poor connection to battery and frame. Make sure connection points are clean. Rock clips back and forth for a better connection. |
| Connections are reversed. | Unplug the charger and reverse the clips. |
| Battery is defective (will not accept a charge). | Have battery checked. |
| CHECK BATTERY (red) LED is blinking. | Indicates the charger is in abort mode. | See “Aborted Charge” in the OPERATING INSTRUCTIONS Section. |
| Charger will not turn on when properly connected. | AC outlet is dead. | Check for open fuse or circuit breaker supplying AC outlet. |
| Poor electrical connection. | Check power cord and extension cord for loose fitting plug. |
| Connections are reversed. | Unplug the charger and reverse the clips. |
| Battery voltage is too low. | This charger has an automatic start feature. If the battery voltage is under 0.2 volts, the charger will not detect it and will not start the charging process. Have the battery checked/replaced. |
| Battery is defective. | Have battery checked. |
| Schumacher User Manual Link |
