Biasi Boiler Troubleshooting

Below there are 7 tables that will help to understand the causes of failure of boiler. Each of them is dedicated to the particular model of the Biasi brand. Pay your attention that depending on the model of the boiler, the table shows the error codes or the way the bulbs are lit as an indicator of the reason why the boiler is not working. The main apparent problem of the boiler is that it gives no hot water. Knowing the usual light of bulbs you will immediately notice an unusual combination and will be able to understand with the help of the manual what is not working. It could help you in troubleshooting.

Biasi Riva Plus He M296 24sr C Boiler Troubleshooting

Lamp 1Lamp 2Lamp 3Description
Flashing lampLamp OFFLamp OFFNormally operating boiler
Lamp OFFFlashing lampC.h. operation
Flashing lampLamp OFFFrost protect operation
Lamp OFFFlashing lampFaulty c.h. temperature probe NTC
Lamp ONLamp OFFFaulty flue temperature probe NTC
Flashing lampLamp ONFaulty primary circuit (no water or low c.h. pressure)
Flashing lamp, alternate with another lampFlashing lamp, alternate with another lampLamp ONFaulty primary circuit (absence of flow)
Flashing lampFlashing lampFaulty air pressure sensor
Flashing lampLamp ONFlashing lampLack of burner ignition (no ignition signal from the full sequence ignition device)
Lamp ONFlashing lampSafety thermostat lock out
Lamp ONFlue temperature probe NTC lock out
Flashing lampFlashing lampFlame detection error
Lamp OFFLamp OFF
Lamp OFFLack of power supply or fauly electronic control p.c.b.

Biasi Rinnova 24S Boiler Troubleshooting

CodeAnomaly
01EIgnition failed lockout
02ESafety thermostat trip lockout
03EGeneric lockout
04ENo water in the heating or circulation circuit
05EFlue gas pressure switch anomaly
06EHeating NTC probe anomaly
07ED.h.w. NTC probe anomaly
08EExternal NTC probe anomaly
11EParasite flame
14ENo circulation or pump failure or activation due to primary temperature limit

Biasi Riva Compact Boiler Troubleshooting

Lamp 1Lamp 2Lamp 3Description
Flashing lampLamp OFFLamp OFFA short pulse every 4 seconds: stand-by condition Function selector in O position. Anti-freeze system active
1 second pulse every 2 seconds: normally operating boiler. Function selector in #5 or position
Flashing lampC.h. operation
Flashing lamp, alternate with another lampFlashing lamp, alternate with another lampD.h.w. operation
Flashing lampFlashing lampLamp OFFFrost protect operation
Lamp OFFLamp OFFFlashing lampD.h.w. operation Excessive temperature on primary circuit
Flashing lampFaulty c.h. temperature probe NTC
Lamp ONFaulty d.h.w temperature probe NTC
Flashing lampLamp ONFaulty primary circuit (no water or absence of flow)
Flashing lampLack of burner ignition (no ignition signal from the full seqence ignition device)
Lamp ONFlashing lampLamp OFFIgnition gas pressure adjustment
Flashing lampLamp ONLamp ONMinimum gas pressure adjustment

Biasi Activ A 250V Boiler Troubleshooting

LCDFUNCTION
Er 01 +RESETLack of burner ignition on safety lockout
Er 02 +RESETSafety thermostat intervention lockout
Er 03 + RESETGeneral lockout
Er 10 +RESETFlue probe intervention lockout
Er 14 +RESETFaulty pump or primary temperature above 105°C
Er 15 +RESETNone or too low water flow; Faulty pump (temp, difference between probes higher than 35° C)
Er 16 +RESETPossible exchange of NTC probes (Flow or Return) or pump wrongly mounted (up- side - down)
Er 17 +RESETFaulty c.h. temp, probe NTC (Flow or Return)
Er 18 +RESETFaulty primary circuit (no water or absence of flow)
Er04Faulty primary circuit (no water or absence of flow)
Er05Faulty fan control system
Er06Faulty c.h. temp, probe NTC flow
Er08Faulty external temp, probe NTC
Er09Faulty flue temp, probe NTC
Er12Fauty c.h. temp, probe NTC return

Biasi Inovia 25C Boiler Troubleshooting

CodeAnomaly
E01Lack of burner ignition
E02Safety thermostat lockout
E03General lockout
E04Lack of circulation pump
E05Faulty fan control system / air pressure / flue thermostat
E06Faulty c.h. temp, probe NTC1 or NTC2
E07Faulty d.h.w. temp, probe NTC
E08Faulty external temp, probe NTC (with K set)
E11Flame detection error
E14Lack of circulation T >105°C

Biasi Advance 25C Boiler Troubleshooting

LCDFUNCTION
cFPre-heating function 3 stars D.H.W. comfort. This information is not displayed. "cF" (the signal “cF" is alternated to the C.H. temperature value until the end of this function).
The function is con- firmed 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).
bPBoiler in anti-freeze phase (bP flashing + temperature flashing).
Boiler protection only.
AFBoiler in antifrost phase (AF flashing + temperature flashing).
System protection via additional external thermostat.
78+ temperatureRemote control connected (one flash every 4 sec.)
C 0Set D.H.W. (all other symbols are disabled)
PoPump activated for the post-circulation phase (Po flashing + temperature flashing)
uuDelayed burner ignition for setting the system (uu flashing + temperature flashing)
Maintenance required The wrench symbol is flashing (without showing any error)
LPBoiler in chimney sweep in function.
The activation of the chimney sweep occurs configuring the "param-eter P09=01" and is visualized:
LP= minimum D.H.W. hP= minimum heating cP= maximum heating dP= maximum D.H.W.. The transition occurs with keys 18 (increase) and 17 (decrease) D.H.W. temperature.