Delta M70A_263 Error F23: The internal communication connection is disconnected

Solar inverter · taken from the manufacturer’s manual, pages cited

Fault codeF23

The internal communication connection is disconnected. The manual's first action is: “Check the connection interface RS-485”

Model
Delta M70A_263
Display shows
The internal communication connection is disconnected (F23)
Type
Fault code
Source
Manual p. 75

What F23 means

The internal communication connection is disconnected p. 75

Common causes

  • The internal communication connection is disconnected p. 75

What to do

  1. Check the connection interface RS-485 p. 75

Before you service the product, read the safety instructions in the manual p. 28.

If F23 is still not resolved

  • contact service / dealer p. 28
    “In order to ensure the normal long-term operation of the inverter, please follow the procedures in Section 5.1 to open and close the door.”
Open the manual at page 75 All M70A_263 error codes Manual details & download

This page summarises what the manufacturer’s manual says about F23; 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 Delta. Found a mistake? Report an error.