PF2W PF2W series Error Er-4: The flow rate is over the flow rate measurement range

PF2W series inverter · taken from the manufacturer’s manual, pages cited

Error codeEr-4

The flow rate is over the flow rate measurement range. The manual's first action is: “Use an adjustment valve, etc. to reduce the flow rate until it is within the flow rate range.”

Model
PF2W PF2W series
Display shows
The flow rate is over the flow rate measurement range (Er-4)
Type
Error code
Source
Manual p. 20

What Er-4 means

The flow rate is over the flow rate measurement range p. 20

Common causes

  • The flow rate is over the flow rate measurement range. p. 20

What to do

  1. Use an adjustment valve, etc. to reduce the flow rate until it is within the flow rate range. p. 20

If Er-4 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact PF2W service.

Open the manual at page 20 All PF2W series error codes Manual details & download

This page summarises what the manufacturer’s manual says about Er-4; 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 PF2W. Found a mistake? Report an error.