| 1. |
Pump power cord not connected to power receptacle or making poor contact. |
| 2. |
Branch circuit not connected. Defective circuit breaker. Branch circuit open or faulty. |
| 3. |
Branch circuit fuse blown or circuit breaker tripped. |
| 4. |
Branch circuit wiring too small to carry pump load. |
| 5. |
Pump motor overload tripped. |
| 6. |
Automatic liquid level control switch defective. |
| 7. |
Internal motor defect (open motor winding, thermal overload defective, power cord open or damaged, centrifugal switch or relay defective or moisture in motor.) |
| 8. |
Exceptionally high voltage. |
| 9. |
Exceptionally low voltage. |
| 10. |
Impeller blocked or bound. |
| 11. |
Impeller loose on shaft. |
| 12. |
Clogged or damaged impeller. |
| 13. |
Impeller rubbing inlet plate or pump housing. |
| 14. |
Bearings frozen. |
| 15. |
Worn out or defective pump or motor bearings. |
| 16. |
Water temperature too high. |
| 17. |
Water inflow excessive. |
| 18. |
Clogged screen or pump inlet. |
| 19. |
Air locked or air bound pump. |
| 20. |
Air bleed hole blocked. |
| 21. |
Pipe discharge closed by obstruction or ice. |
| 22. |
Inadequate discharge pipe diameter. |
| 23. |
Defective or inoperative check valve. |
| 24. |
Check valve installed in wrong direction. |
| 25. |
No check valve in high head installations. |
| 26. |
Water level not sufficiently high to actuate control switch. |
| 27. |
Float operation obstructed or restrained. |
| 28. |
Floats or weights improperly adjusted. |
| 29. |
Float rod bent or obstructed by debris. |
| 30. |
Loose shaft coupling. |
| 31. |
Obstructed rotating parts. |
| 32. |
Too high a static and friction head. |
| 33. |
Motor running backwards. |
| 34. |
Sump size too small. |
| 35. |
Discharge plumbing connected directly to floor joists. |
| 36. |
Pump not positioned firmly on bottom of sump. |
| 37. |
Gravel or stones on bottom of sump. |
| 38. |
Sump bottom soft and muddy. |
| 39. |
Improperly sized pump. |
| 40. |
Diaphragm control skirt lost trapped air. |
| 41. |
Breather tube in power cord obstructed. |
| 42. |
Moisture in breather tube. |
| 43. |
Passage from control skirt to diaphragm obstructed. |
| 44. |
Compression fittings retaining pressure tube between control skirt and control are loose. |
| 45. |
Defective control switch. |
