Danfoss 100 FLOW Error 50: AI Low Fault

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

Fault code50

AI Low Fault occurs when one or more analog inputs are below 50% of their minimum signal range, possibly due to a defective cable or source. The manual's first action is: “Replace the defective parts.”

Model
Danfoss 100 FLOW
Display shows
AI Low Fault (50)
Type
Fault code
Source
Manual p. 309

What 50 means

AI Low Fault p. 309

Common causes

  • 1 or more of the available analog input signals is below 50% of the minimum signal range. p. 309
  • A control cable is defective or loose. p. 309
  • A malfunction in a signal source. p. 309

What to do

  1. Replace the defective parts. p. 309
  2. Check the analog input circuit. p. 309
  3. Make sure that parameter AI1 Signal Range is set correctly. p. 309

If 50 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 309 All 100 FLOW error codes Manual details & download

This page summarises what the manufacturer’s manual says about 50; 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.