Lifan
Automatic Transfer Switch (ATS) Fails to Transfer
Generator starts and runs but does not transfer power to the house.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty ATS control coil, Open control wiring between Lifan controller and ATS, Mechanical binding in transfer mechanism, Incorrect ATS configuration
How to Fix / Troubleshooting
Safety first: Only qualified electricians should service transfer switches. Isolate both utility and generator sources before opening the ATS.
- Verify generator output: Confirm the Lifan generator is producing correct voltage and frequency at its terminals.
- Check ATS control signal: Using the Lifan wiring diagram, verify that the transfer signal from the generator controller reaches the ATS coil terminals. Repair any broken control wires.
- Inspect ATS mechanism: With all power off, manually operate the transfer mechanism (if allowed by design). If it binds or sticks, clean and lubricate per manufacturer instructions or replace the ATS mechanism.
- Test ATS coil: Measure coil resistance and compare to spec. Replace the ATS coil if open or shorted.
- Configuration: Ensure the ATS is configured for the correct voltage and phase to match the Lifan generator.
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Repair Difficulty
Professional Required
5/5
Required Part
Automatic Transfer Switch Coil
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