E19
Himoinsa
Overcurrent / Overload Protection
Generator controller indicates E19 and trips the generator off load.
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
Load exceeding generator rated current, Short circuit on load side, Faulty current transformer (CT), Incorrect overload settings in controller
How to Fix / Troubleshooting
Safety: Disconnect generator from load and ensure all downstream breakers are opened before investigation.
- Check load: Review kW and current readings on the controller. Compare to generator nameplate rating. Reduce load if above rating.
- Inspect downstream circuits: Check for tripped breakers or signs of short circuits in the load distribution panels. Repair any faults before reconnecting.
- Verify CT wiring: In the control panel, inspect CT connections for tightness and correct polarity (P1/P2, S1/S2). Incorrect wiring can cause false overcurrent readings.
- Controller settings: Confirm that overcurrent thresholds and time delays are set according to Himoinsa specifications.
- Test with partial load: Reconnect loads gradually while monitoring current. If E19 recurs at low load, CTs or the controller may be faulty and require replacement.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Current Transformer Set
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements