Worcester Bosch Greenstar RI Heat Only fault 2
Loss of ionisation signal during operation
Gas boilerWhat it means
Locking fault. An established flame has been extinguished during operation.
Likely causes
- Flame extinguished during operation
- Loss of ionisation signal
Where to start
- Check gas supply continuity
- Check ionisation electrode and flame sensing circuit
The full answer, free
- How to put it right, step by step
- The manual page for this fault (page 54), 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 Worcester Bosch manual for the Greenstar RI Heat Only. Check the model on the data plate before you order parts.