Cause
- Compressor current draw is over the calculated maximum for 10 minutes.
| Components | Troubleshooting | Corrective actions |
|---|---|---|
| Current Sensor | Compare Cd3 to actual measured current at wire T1-T2 or T3 going to the compressor contactor. If there is a difference, determine whether this is caused by current sensor or amp clamp tool. | Replace current sensor if defective. |
| Amperage is indeed too high. | Confirm supply voltage/frequency is within specification and balanced according to Electrical Data Section 2.3. | Correct power supply. |
| Operating Conditions | Make sure system pressures are relevant to operating conditions. | Check air flow of condenser. Check Refrigerant charge, refer to REFRIGERATION SYSTEM SERVICE Section 6.3 |
| Monitor Unit | Alarm is display only the alarm may clear itself during operation | If alarm remains active or is repetitive replace compressor at next available opportunity, refer to COMPRESSOR Service Section 6.8. |
