Intergas HRE / Rapid / ECO RF fault 2
S1 and S2 interchanged
Gas boilerWhat it means
The boiler controller has detected that sensors S1 and S2 are connected in swapped/incorrect positions.
Likely causes
- S1 or S2 sensor fault
- Burner not firing on CH due to sensor S1 or S2 fault
Where to start
- Check room thermostat / weather-dependent adjustment - check wiring, replace thermostat or weather-dependent adjustment if faulty
- If OK, check for current (24V) - check wiring against diagram, check connector X4, replace faulty manager
- If current present, check if pump is running - check power supply, check connector X2, replace faulty pump
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.