Danfoss 100 FLOW Error 18: Unbalance

Danfoss 100 FLOW · taken from the manufacturer’s manual, pages cited

Fault code18

Unbalance occurs when current is unbalanced between power units, requiring cable and connection checks. The manual's first action is: “Check the motor cables and connections.”

Model
Danfoss 100 FLOW
Display shows
Unbalance (18)
Type
Fault code
Source
Manual p. 301

What 18 means

Unbalance p. 301

Common causes

  • The current is unbalanced between power units. p. 301
  • Check the output filters (dU/dt filter, sine filter). p. 301
  • Reset the fault and restart the drive. p. 301
  • If the fault occurs again, ask for instructions from your nearest service center or distributor. Report carefully all the used software, application and options. p. 301

What to do

  1. Check the motor cables and connections. p. 301

If 18 is still not resolved

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

Open the manual at page 301 All 100 FLOW error codes Manual details & download

This page summarises what the manufacturer’s manual says about 18; 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 Danfoss. Found a mistake? Report an error.