Ideal Logic System IE Gen 2 fault F02

What it means

Boiler has lost flame signal during operation, indicating ignition or gas supply issues.

Likely causes

1. No/low gas pressure at boiler inlet
2. Faulty electrode or harness
3. Faulty spark generator or harness
4. No 24Vdc supply to gas valve while flame is on
5. Wiring fault from gas valve to PCB
6. Faulty PCB
7. Blocked condensate pipe or flue
8. Blocked trap or condensate drain pipe work
9. Faulty gas valve
10. Low gas pressure
11. Blocked condensate/trap
12. Flue components not correctly assembled, fixed or supported
13. Flue or flue terminal obstructed
14. Seals on flue extensions displaced during installation
15. Combustion products and inlet air mixing due to flue integrity fault
16. Gas control valve fault requiring replacement
17. Spark generator fault requiring replacement
18. Faulty spark generator causing ignition failure
19. CO/CO2 ratio greater than 0.004 indicates need for cleaning
20. Debris or deposits in heat engine/sump outlet
21. Damaged electrode affecting combustion
22. Condensate trap blockage or drying out
23. Combustion deposits building up on heat exchanger
24. Damaged or worn electrode affecting spark gap
25. Debris in sump outlet or condensate trap
26. Water or gas joint leakage
27. Faulty gas control valve requiring replacement

Where to start

1. Check if boiler ignites for a short time and then extinguishes
2. Check Gas Pressure available at the Boiler Inlet (>18 mbar)
3. Check if 24Vdc supply is available at the Gas Valve while the flame is on