Burner controls, ignition and flame safeguards
Riello RDB 3.2 BT 50/70 Burner Control fault codes
What all 11 Riello RDB 3.2 BT 50/70 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 |
|---|---|---|
| Red steady on | Reset button: steady red The burner control locks out because no flame was detected at the end of the safety time. | RED |
| Orange steady on | Reset button: steady orange The burner control locks out due to a mains supply frequency anomaly, stopping the heating system. | GREEN |
| Red blinking (0.5s/0.5s) | Reset button: red blinking The burner control locks out because an extraneous light or parasite flame signal was detected. | RED |
| Red flashing (0.5s/2.5s) | Reset button: red long-gap flashing The burner control locks out because the oil pre-heater exceeded its maximum pre-heating time. | RED |
| Red fast blinking (0.2s/0.2s) | Reset button: red fast blinking The burner control locks out after reaching the maximum number of recycles from repeated flame failures. | RED |
| Green + red blinking (0.5s/0.5s) | Reset button: green and red blinking The burner control locks out because it detects extraneous light or a parasite flame signal. | RED |
| Orange + green blinking (0.5s/0.5s) | Reset button: orange and green blinking The burner control locks out due to an internal memory fault, preventing the burner from starting. | RED |
| Green + red fast blinking (0.2s/0.2s) | Reset button: green and red fast blinking The system detected an anomaly with the local or remote clearing button, which prevents the burner from operating. | GREEN |
| Orange + green fast blinking (0.2s/0.2s) | Reset button: orange and green fast blinking The burner control locks out due to an internal voltage fault, preventing burner operation. | GREEN |
| Red + green inverted flashing (2.5s/0.5s) | Reset button: red and green inverted flashing The burner control locks out due to a malfunction in the internal control circuit driving the oil valve. | RED |
| Red + orange inverted flashing (2.5s/0.5s) | Reset button: red and orange inverted flashing The burner control locks out due to a fan motor fault, stopping the combustion process. | RED |
Every code comes from the manufacturer's own manual. Subscribers see which manual and page.