Biasi Combi Boiler Error Codes Check out the table below to find your Biasi error code and see what the fault code on your Biasi boiler relates to. Biasi fault codes are generally the same across all their boilers, which makes it easier to identify the issue with your boiler. If you can’t find your fault code in the list below then we have listed every single Biasi boiler manual below that, the answers you seek shall be there!
Biasi Boiler Error Code Solutions
| Fault Code | Fault Image | Boiler Fault |
|---|---|---|
| ER 01 + Reset | N/A | Lack of burner ignition on safety lockout |
| ER 02 + Reset | N/A | Safety thermostat intervention lockout |
| ER 03 + Reset | N/A | General lockout |
| ER 04 + | Faulty primary circuit (no water or absence of flow) | |
| ER 05 + | Faulty fan control system | |
| ER 06 + | Faulty Central Heating temp. probe NTC | |
| ER 07 + | Faulty Domestic Hot Water (DHW) temp. probe NTC | |
| ER 08 + | Faulty external temp. probe NTC | |
| ER 09 + | Faulty flue temp. probe NTC | |
| ER 10 + reset | N/A | Flue probe intervention lockout |
| N/A | Flame detection error (An flashing + number error flashing) | |
| ER 12+ | Faulty central heating temperature probe NTC | |
| ER 13 + | DT Delivery return >40k | |
| ER + 14 + Reset | N/A | Faulty pump or primary temperature above 105°C |
| ER + 14 + Reset | N/A | Faulty pump or primary temperature above 105°C |
| ER + 14 + | Absence of flow from temperature gradient (>2K/s) | |
| ER + 19 + | Domestic hot water inlet probe failure (if sent) | |
| ER + 25 + Reset | N/A | Flame detection fault |
| ER + 69 | N/A | Wiring fault lockout |
| Li | N/A | Primary circuit temp. limit during domestic hot water operation |
| — | N/A | Boiler Stand-By, hyphens are turned on in sequence to simulate running/antifreeze protection activated) |
| N/A | Boiler Stand-By, hyphens are turned on in sequence to simulate running/antifreeze protection activated) | |
| N/A | Filling request: The boiler works regularly and the display shows all the icons, but the signal FL is flashing every 1 sec. | |
| 30c | N/A | Boiler waiting for heat request |
| N/A | Boiler in summer mode (d.h.w.). The primary circuit temperature is displayed. | |
| N/A | Boiler in winter mode (c.h.+ d.h.w.) The primary circuit temperature is displayed. | |
| N/A | Boiler on demand for d.h.w. power. The d.h.w. temperature is displayed. / Boiler on demand for c.h. power. | |
| N/A | Burner ignition (spark) | |
| N/A | Flame present (Burner on) | |
| N/A | Pre-heating function 3 starts DHW comfort. This information is not displayed. It will be possible to check its state in the section “INFO” value “cF” (the signal “cF” is alternated to the CH temperature value until the end of this function). You can enter the function by pushing buttons 12 and 13 together. The function is confirmed showing ON or OFF alternating for 5 sec. This function is always active at every hour (it’s not possible to set the time slots unless a remote control is connected). | |
| N/A | Pre-heating function 3 starts DHW comfort. This information is not displayed. It will be possible to check its state in the section “INFO” value “cF” (the signal “cF” is alternated to the CH temperature value until the end of this function). You can enter the function by pushing buttons 12 and 13 together. The function is confirmed showing ON or OFF alternating for 5 sec. This function is always active at every hour (it’s not possible to set the time slots unless a remote control is connected). | |
| N/A | Boiler in anti-freeze phase (bP flashing + temperature flashing) | |
| N/A | Boiler in antifrost phase (AF flashing + temperature flashing) | |
| N/A | Set c.h. (all other symbols are disabled) | |
| N/A | Remote control connected – 1 flash every 4 seconds | |
| N/A | Set d.h.w. (all other symbols are disabled) | |
| N/A | Pump activated for the post-circulation phase (Po flashing + temperature flashing) | |
| N/A | Delayed burner ignition for setting the system (uu flashing + temperature flashing) | |
| N/A | Maintenance required The wrench symbol is flashing (without showing any error) | |
| LP | N/A | Boiler in chimney sweep in function. The activation of the chimney sweep occurs configuring the “parameter P09=01” and is visualized: LP= minimum dhw hP= minimum heating cP= maximum heating dP= maximum dhw. The transition occurs with keys 16 (increase) and 15 (decrease) dhw temperature. The writing on the display alternates. |
| N/A | Boiler in chimney sweep function. The activation of the chimney sweep occurs configuring the “parameter P09=01” and is visualized: LP= minimum dhw hP= minimum heating cP= maximum heating dP= maximum dhw. The transition occurs with keys 16 (increase) and 15 (decrease) dhw temperature. The writing on the display alternates. |