Ideal Logic Heat fault L6
False flame lockout
Gas boilerWhat it means
Alternating 'L' and '6' indicates a false flame lockout, where the flame detection circuit senses a flame signal when no flame should be present.
Likely causes
- Deteriorated flame sense electrode
- Poor internal boiler wiring routing or integrity
- Faulty flame detection electrode
- Loss of continuity in flame detection electrode connector
Where to start
- Reset the boiler and check if it works OK
- Check routing and integrity of internal boiler wiring
- Check condition of flame sense electrode, replace if deteriorated
The full answer, free
- 9 more checks in order
- 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 Ideal manual for the Logic Heat. Check the model on the data plate before you order parts.