Analog Current Input Error

What does E26. mean?

This error is detected when excessive current flows through the analog current input terminal FI. This is typically caused by a short-circuit in the wiring connected to the FI terminal or incorrect wiring connections. If left unresolved, it can damage the inverter's control circuit board or lead to inaccurate frequency reference inputs.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If wiring is confirmed correct, the control circuit board itself may be faulty and require repair or replacement.

2. 4

   Ensure the input signal source for FI is functioning correctly and providing a stable output.