E13
Pramac
Phase Sequence / Phase Rotation Error (Three-Phase Models)
Pramac controller indicates E13 and unit shuts down unexpectedly
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 wiring at alternator terminals, Miswired ATS output, Internal alternator phase connection fault, Controller phase sensing error
How to Fix / Troubleshooting
Safety first: Only qualified personnel should work on three-phase power systems. Isolate generator and utility power before opening any electrical enclosures.
- Verify phase order: Using a phase rotation meter, check the phase sequence (L1-L2-L3) at the generator terminals and ATS output. It must match the Pramac specification and the connected load requirements.
- Correct wiring: If phases are crossed, re-land the cables on the correct terminals at the ATS or generator terminal box.
- Inspect sensing leads: Ensure the controller's phase sensing wires are correctly connected and not swapped.
- Controller check: If wiring is correct and E13 persists, the controller's phase detection circuit may be faulty and require replacement.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Controller Phase Sensing Harness
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements