E14
Wacker Neuson Synchronization / Phase Sequence Error (for ATS-equipped systems)

Generator stops and E14 is logged when mains/utility returns

Advertisements

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.

Advertisements

Possible Causes

Incorrect phase rotation between generator and utility, Faulty phase sensing module, Miswired automatic transfer switch (ATS), Loose phase sensing connections to controller

How to Fix / Troubleshooting

Safety first: This involves work on live power systems. Only qualified personnel should perform synchronization and phase checks. Isolate the generator and lock out the ATS before opening panels.

  • Verify wiring: Compare actual wiring in the ATS and generator terminal box to the Wacker Neuson wiring diagram. Ensure phases L1, L2, L3 are consistently labeled and connected.
  • Check phase rotation: Use a phase rotation meter on both utility and generator outputs. Confirm they match (e.g., ABC to ABC). If reversed, swap two phases on the generator side (with power off).
  • Inspect sensing leads: Ensure the controller's voltage and phase sensing leads are correctly landed and tight at the ATS or generator terminals.
  • Test phase sensing module: If equipped with a separate module, verify its supply voltage and replace if it fails self-test.
  • Reset E14: After correcting wiring and rotation, clear the fault and test an automatic transfer sequence.
Advertisements

Repair Difficulty

Professional Required 5/5

Required Part

Phase Sensing Module
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements