Categories: Boiler

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 1 Lamp 2 Lamp 3 Description
Flashing lamp Lamp OFF Lamp OFF Normally operating boiler
Lamp OFF Flashing lamp C.h. operation
Flashing lamp Lamp OFF Frost protect operation
Lamp OFF Flashing lamp Faulty c.h. temperature probe NTC
Lamp ON Lamp OFF Faulty flue temperature probe NTC
Flashing lamp Lamp ON Faulty primary circuit (no water or low c.h. pressure)
Flashing lamp, alternate with another lamp Flashing lamp, alternate with another lamp Lamp ON Faulty primary circuit (absence of flow)
Flashing lamp Flashing lamp Faulty air pressure sensor
Flashing lamp Lamp ON Flashing lamp Lack of burner ignition (no ignition signal from the full sequence ignition device)
Lamp ON Flashing lamp Safety thermostat lock out
Lamp ON Flue temperature probe NTC lock out
Flashing lamp Flashing lamp Flame detection error
Lamp OFF Lamp OFF
Lamp OFF Lack of power supply or fauly electronic control p.c.b.

Biasi Rinnova 24S Boiler Troubleshooting

Code Anomaly
01E Ignition failed lockout
02E Safety thermostat trip lockout
03E Generic lockout
04E No water in the heating or circulation circuit
05E Flue gas pressure switch anomaly
06E Heating NTC probe anomaly
07E D.h.w. NTC probe anomaly
08E External NTC probe anomaly
11E Parasite flame
14E No circulation or pump failure or activation due to primary temperature limit

Biasi Riva Compact Boiler Troubleshooting

Lamp 1 Lamp 2 Lamp 3 Description
Flashing lamp Lamp OFF Lamp OFF A 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 lamp C.h. operation
Flashing lamp, alternate with another lamp Flashing lamp, alternate with another lamp D.h.w. operation
Flashing lamp Flashing lamp Lamp OFF Frost protect operation
Lamp OFF Lamp OFF Flashing lamp D.h.w. operation Excessive temperature on primary circuit
Flashing lamp Faulty c.h. temperature probe NTC
Lamp ON Faulty d.h.w temperature probe NTC
Flashing lamp Lamp ON Faulty primary circuit (no water or absence of flow)
Flashing lamp Lack of burner ignition (no ignition signal from the full seqence ignition device)
Lamp ON Flashing lamp Lamp OFF Ignition gas pressure adjustment
Flashing lamp Lamp ON Lamp ON Minimum gas pressure adjustment

Biasi Activ A 250V Boiler Troubleshooting

LCD FUNCTION
Er 01 +RESET Lack of burner ignition on safety lockout
Er 02 +RESET Safety thermostat intervention lockout
Er 03 + RESET General lockout
Er 10 +RESET Flue probe intervention lockout
Er 14 +RESET Faulty pump or primary temperature above 105°C
Er 15 +RESET None or too low water flow; Faulty pump (temp, difference between probes higher than 35° C)
Er 16 +RESET Possible exchange of NTC probes (Flow or Return) or pump wrongly mounted (up- side – down)
Er 17 +RESET Faulty c.h. temp, probe NTC (Flow or Return)
Er 18 +RESET Faulty primary circuit (no water or absence of flow)
Er04 Faulty primary circuit (no water or absence of flow)
Er05 Faulty fan control system
Er06 Faulty c.h. temp, probe NTC flow
Er08 Faulty external temp, probe NTC
Er09 Faulty flue temp, probe NTC
Er12 Fauty c.h. temp, probe NTC return

Biasi Inovia 25C Boiler Troubleshooting

Code Anomaly
E01 Lack of burner ignition
E02 Safety thermostat lockout
E03 General lockout
E04 Lack of circulation pump
E05 Faulty fan control system / air pressure / flue thermostat
E06 Faulty c.h. temp, probe NTC1 or NTC2
E07 Faulty d.h.w. temp, probe NTC
E08 Faulty external temp, probe NTC (with K set)
E11 Flame detection error
E14 Lack of circulation T >105°C

Biasi Advance 25C Boiler Troubleshooting

LCD FUNCTION
cF Pre-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).
bP Boiler in anti-freeze phase (bP flashing + temperature flashing).
Boiler protection only.
AF Boiler in antifrost phase (AF flashing + temperature flashing).
System protection via additional external thermostat.
78+ temperature Remote control connected (one flash every 4 sec.)
C 0 Set D.H.W. (all other symbols are disabled)
Po Pump activated for the post-circulation phase (Po flashing + temperature flashing)
uu Delayed burner ignition for setting the system (uu flashing + temperature flashing)
Maintenance required The wrench symbol is flashing (without showing any error)
LP Boiler 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.