Burner controls, ignition and flame safeguards
Siemens LME2x / Ecoflam E-BCU Gas Burner Control fault codes
What all 7 Siemens LME2x / Ecoflam E-BCU Gas Burner Control fault codes mean, in plain words, with a risk grade for each. These come from the manufacturer's own manual. The fix for each one is in WERCS Diagnose.
Get the fixes · plans from $49/moUpdated July 23, 2026
| Code | What it means | Risk |
|---|---|---|
| 2 blinks | Red LED: 2 blinks The burner locks out because no flame was established by the end of the ignition safety time. | RED |
| 3 blinks | Red LED: 3 blinks The air pressure switch is faulty or welded in the normal position, which locks out the burner. | RED |
| 4 blinks | Red LED: 4 blinks The burner locks out because extraneous light was detected when the system was starting up. | RED |
| 5 blinks | Red LED: 5 blinks The air pressure switch timed out because it is welded in the working position, which locks out the burner. | RED |
| 7 blinks | Red LED: 7 blinks The burner locks out because the flame was lost too many times during normal operation. | RED |
| 10 blinks | Red LED: 10 blinks A wiring error or internal fault occurred with the output contacts, which locks out the burner. | RED |
| 14 blinks | Red LED: 14 blinks The valve closed position indicator contact is not closed, which causes the gas burner control to fault and stop operating. | RED |
Every code comes from the manufacturer's own manual. Subscribers see which manual and page.