SMC IZT40, IZT41/42 series Error E3: Incorrect high voltage

Ionizer · taken from the manufacturer’s manual, pages cited

Error codeE3

Incorrect high voltage occurs because of power supply +24 VDC OFF, controller button ▲ / ▼ / S button OFF, or an incorrect high-voltage module. The manual's first action is: “Turn the power off and on again”

Model
SMC IZT40, IZT41/42 series
Display shows
Incorrect high voltage (E3)
Type
Error code
Source
Manual p. 40

What E3 means

Incorrect high voltage p. 59

Common causes

  • Power supply +24 VDC OFF p. 59
  • Controller button ▲ / ▼ / S button OFF p. 59
  • Incorrect high-voltage module p. 59
  • When abnormal high voltage is discharged. p. 59
  • Incorrect high voltage (applicable models: IZT40, IZT41, IZT42). When abnormal discharge occurs during this product operation. p. 59

What to do

  1. Turn the power off and on again p. 59
  2. The abnormal signal is OFF (ON when normal. IZTC40 does not have an output signal), and the ION/HV LED for the CH with abnormality is ON (red) and the error code "E3" is flashing in the frequency display. p. 59

If E3 is still not resolved

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

Open the manual at page 40 All IZT40, IZT41/42 series error codes Manual details & download

This page summarises what the manufacturer’s manual says about E3; 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 SMC. Found a mistake? Report an error.