Yaskawa FS100 Error 1841: COMMUNICATION ERROR (LOOP BACK) – Meaning, Causes & Fix

Alarm code1841

A communication error has occurred due to a loop-back failure. The manual's first action is: “(1)Turn the power OFF then back ON. (2)If the alarm occurs again, save the CMOS.BIN in maintenance mode, and then contact your Yaskawa representative about occurrence status (operating procedure).”

Model: Yaskawa FS100
Display shows: COMMUNICATION ERROR (LOOP BACK) (1841)
Type: Alarm code
Source: Manual p. 153

Meaning
Common causes
What to do
Still not solved
Source

What 1841 means

COMMUNICATION ERROR (LOOP BACK) p. 153

Common causes

Connection failure p. 153

What to do

(1)Turn the power OFF then back ON. (2)If the alarm occurs again, save the CMOS.BIN in maintenance mode, and then contact your Yaskawa representative about occurrence status (operating procedure). p. 153

If 1841 is still not resolved

(1)Turn the power OFF then back ON. (2)If the alarm occurs again, save the CMOS.BIN in maintenance mode, and then contact your Yaskawa representative about occurrence status (operating procedure). p. 153
“(1)Turn the power OFF then back ON. (2)If the alarm occurs again, save the CMOS.BIN in maintenance mode, and then contact your Yaskawa representative about occurrence status (operating procedure).”

Open the manual at page 153 All FS100 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 1841; 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 Yaskawa. Found a mistake? Report an error.