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| Faults | Problem | Solution |
| No liquid lifting or deficient | 1.Reverse rotation of motor | 1. Change any two leads of the three phases |
| 2.Pipe or impeller blocked | 2. Clear suction area | |
| 3. Impeller drop down or damaged | 3.Re-secure or change impeller | |
| Uneven running (Vibration) | 1. Pump head too low or pump cavitation | 1. Replace pump or reset valve |
| 2. Impeller damaged | 2. Replace impeller | |
| 3. Bearing damaged | 3. Replace bearing | |
| 4. Impeller friction | 4. Reset impeller gap | |
| Insulation failure | 1. Cable damaged | 1. Replace cable and dry motor |
| 2. Mechanical seal failure | 2. Replace seal and dry motor | |
| 3. O ring failure | 3. Replace O ring and dry motor | |
| 4. Water into cable | 4. Replace cable and dry motor | |
| Current excessive or motor Temperature too high | 1. The pump is locked | 1. Free impeller |
| 2.Medium density and viscosity is excessive | 2. Adjust medium density and viscosity. | |
| 3. Bearing damaged | 3. Replace bearing | |
| 4. Working voltage is too low | 4. Reset voltage | |
| Sudden current drop | 1. Pipe or pump blocked | 1. Cleaning pump or pipe |
| 2. Water level is too low | 2. Filling medium | |
| 3. Impeller damaged | 3. Replace impeller | |
| Thermal protection alarm | 1. Motor out of water | 1. Reset pump installation or install cooling device |
| 2. Voltage low | 2. Reset voltage | |
| 3. Bearing damaged | 3. Replace bearing | |
| 4.Trouble with cooling device | 4. Clean cooling device | |
| Leak protection alarm | 1. Mechanical seal failure | 1. Replace seal and dry motor |
| 2. O ring failure | 2. Replace O ring and dry motor |
TUSSU®Industrial WQP Stainless Steel Submersible Sewage Pump
September 10, 2026
