Danfoss 100 FLOW Error ID 171: Unbalance

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

Fault codeID 171

Unbalance happens when DC voltage is unbalanced between power units, indicating cable issues. The manual's first action is: “Check the DC link cables between the power units.”

Model
Danfoss 100 FLOW
Display shows
Unbalance (ID 171)
Type
Fault code
Source
Manual p. 302

What ID 171 means

Unbalance p. 302

Common causes

  • The DC voltage is unbalanced between power units. p. 302

What to do

  1. Check the DC link cables between the power units. p. 302
  2. Check the motor cables and connections. p. 302
  3. Check the output filters (dU/dt filter, sine filter). p. 302
  4. Reset the fault and restart the drive. p. 302
  5. 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. 302

If ID 171 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 302 All 100 FLOW error codes Manual details & download

This page summarises what the manufacturer’s manual says about ID 171; 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.