Vacon 100 Flow Error 9: Undervoltage (fault)

Vacon 100 Flow drive · taken from the manufacturer’s manual, pages cited

Fault code9

Undervoltage (fault) occurs when DC link voltage drops below limits, supply voltage is too low, or a component is defective. The manual's first action is: “If there is a temporary supply voltage break, reset the fault and restart the drive.”

Model
Vacon 100 Flow
Display shows
Undervoltage (fault) (9)
Type
Fault code
Source
Manual p. 369

What 9 means

Undervoltage (fault) p. 369

Common causes

  • The DC link voltage is lower than the limits. p. 369
  • The supply voltage is too low p. 369
  • a defective component p. 369
  • a defective input fuse p. 369
  • the external charge switch is not closed p. 369

What to do

  1. If there is a temporary supply voltage break, reset the fault and restart the drive. p. 369
  2. Do a check of the supply voltage. If the supply voltage is sufficient, there is an internal fault. p. 369
  3. Examine the electrical network for fault. p. 369
  4. Ask instructions from the distributor near to you. p. 369

Before you service the product, read the safety instructions in the manual p. 88.

If 9 is still not resolved

  • contact your nearest service center or partner. p. 201
    “If the access code is lost, contact your nearest service center or partner.”
  • Go into the submenu Reset faults and use the parameter Reset Faults. p. 187
    “Go into the submenu Reset faults and use the parameter Reset Faults.”
Open the manual at page 369 All 100 Flow error codes Manual details & download

This page summarises what the manufacturer’s manual says about 9; 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 Vacon. Found a mistake? Report an error.