Intergas HRE / Rapid / ECO RF fault 24

Sensor fault S2

Gas boiler

What it means

Sensor fault relating to S2 sensor, codes 20-24 indicate variations of this fault.

Likely causes

  1. Wiring for S2 broken
  2. Burner not firing on CH due to sensor S1 or S2 fault

Where to start

  1. Check wiring for break
  2. Check room thermostat / weather-dependent adjustment - check wiring, replace thermostat or weather-dependent adjustment if faulty
  3. If OK, check for current (24V) - check wiring against diagram, check connector X4, replace faulty manager

The full answer, free

  • 2 more checks in order
  • The readings and component tests from the manual
  • How to put it right, step by step
  • The manual page for this fault (page 49), right under the answer

Safety: Isolate gas and power before you open the case. If you have been into the gas side, do a tightness test, and a combustion and flue check before you hand back. Gas Safe (UK) or RGI (Ireland) work only.

From the Intergas manual for the HRE / Rapid / ECO RF. Check the model on the data plate before you order parts.

Other Intergas HRE / Rapid / ECO RF fault codes