Alpha InTec 30C, 34C Error 03: High flue thermostat temperature

Alpha InTec gas boiler · taken from the manufacturer’s manual, pages cited

Fault code03

The flue thermostat temperature is too high. The manual lists no action for this code.

Model
Alpha InTec 30C, 34C
Display shows
High flue thermostat temperature (03)
Type
Fault code
Source
Manual p. 41

What 03 means

High flue thermostat temperature p. 41

Common causes

  • Blocked or restricted primary flow p. 41
  • Heat exchanger air flow blocked p. 41
  • Flue restriction p. 41
  • Flue sensor fault p. 41

If 03 is still not resolved

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

Open the manual at page 41 All 30C, 34C error codes Manual details & download

This page summarises what the manufacturer’s manual says about 03; 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 Alpha InTec. Found a mistake? Report an error.