Dealing with a flashing red light on your controller, rapid clicking from the pressure switch, or a sudden loss of water? Welcome to the most comprehensive Well Pump Troubleshooting & Error Codes Hub. We translate complex manufacturer service manuals into clear, actionable advice for homeowners.
Inside our diagnostic guides, you will find:
Error Code Decoders: Exact meanings and root causes for faults on leading VFD controllers (Franklin Electric, Grundfos CU 301, Goulds Aquavar, Pentair, and more).
Symptom Analysis: Step-by-step guides for diagnosing classic systems without screens (short cycling, sputtering air, dead motors).
DIY vs. Professional Repair: Clear safety boundaries detailing what you can test yourself (like air charge and start capacitors) and when you absolutely need a specialized pump hoist rig.
Don’t let a minor fault turn into a burnt-out motor. Select your brand or symptom below to find a solution, or use our nationwide directory to connect with a certified well repair technician in your state.
Diagnosis: The Goulds Aquavar F04 fault indicates the variable frequency drive (VFD) is receiving insufficient line voltage, typically below 190V on a 230V nominal system. This is often caused by utility power sags, undersized wiring, or loose connections, which can force the motor to draw excessive current, leading to overheating and damage. Troubleshooting involves verifying […]
Goulds Aquavar F04 Under Voltage Fault: Pro Guide Read More »
Diagnosis: The Goulds Aquavar F08 fault code indicates a ‘Dry Run’ condition, meaning the pump is operating without sufficient water. This is typically caused by the well’s static water level dropping below the pump intake due to drought or over-pumping. The VFD detects this by sensing a sharp drop in motor load (amperage) and shuts
Goulds Aquavar F08 Fault: Pro Dry Run Troubleshooting Guide Read More »
Diagnosis: A Pentair Intellidrive E-01 error indicates a critical failure in the 4-20mA pressure transducer signal. This is commonly caused by a damaged transducer from freezing or water hammer, a chewed or broken cable, or mineral buildup clogging the sensor port. While visual inspection of the cable is possible for a homeowner, a professional repair
Pentair E-01 Transducer Fault: Pro Guide to Fix E01 Code Read More »