Einhell
ATS Transfer Mechanism Fault
Generator starts automatically but ATS does not transfer load to generator
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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
Mechanical jam in transfer contactor, Faulty ATS control logic, Incorrect voltage sensing threshold, Burnt transfer contacts
How to Fix / Troubleshooting
Safety first: Lock out and tag out both mains and generator sources before opening the ATS. Only qualified electricians should service ATS units.
- Visual inspection: Check the ATS contactor or motorized switch for signs of overheating or mechanical damage.
- Manual operation: If the ATS has a manual transfer handle, test its movement with power off. It should move smoothly between positions.
- Check generator voltage: Ensure the Einhell generator is producing correct voltage and frequency; the ATS will not transfer if parameters are out of range.
- Inspect control fuses: Replace any blown control fuses in the ATS.
Burnt or welded contacts require replacement of the ATS contactor assembly.
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Repair Difficulty
Professional Required
5/5
Required Part
Einhell Automatic Transfer Switch Contactor
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