Alpha InTec 30C, 34C Error 02: Overheat boiler lock out

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

Fault code02

02 on the Alpha InTec 30C, 34C is listed in the manual as: Overheat boiler lock out. The manual lists no action for this code.

Model
Alpha InTec 30C, 34C
Display shows
Overheat boiler lock out (02)
Type
Fault code
Source
Manual p. 41

What 02 means

Overheat boiler lock out p. 41

Common causes

  • Pump or flow problem p. 41
  • Blocked heat exchanger p. 41
  • Air in heat exchanger p. 41
  • Overheat thermostat p. 41
  • Thermal fuse (if open circuit then replace primary heat exchanger) p. 41

If 02 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 02; 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.