Mitsubishi FREQROL-2120 Error OC3: Deceleration overcurrent

Inverter · taken from the manufacturer’s manual, pages cited

Alarm codeOC3

Deceleration overcurrent happens when deceleration is too fast or there’s an output short-circuit. The manual's first action is: “Prolong deceleration time.”

Model
Mitsubishi FREQROL-2120
Display shows
Deceleration overcurrent (OC3)
Type
Alarm code
Source
Manual p. 32

What OC3 means

Deceleration overcurrent p. 32

Common causes

  • Is deceleration too fast? p. 32
  • Is output short-circuited? p. 32

What to do

  1. Prolong deceleration time. p. 32

Before you service the product, read the safety instructions in the manual p. 7.

If OC3 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Mitsubishi service.

Open the manual at page 32 All FREQROL-2120 error codes Manual details & download

This page summarises what the manufacturer’s manual says about OC3; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Mitsubishi. Found a mistake? Report an error.