Instruction manual

49
Error codes
Code:
Meaning:
Excessive water temperature detected by the
heating sensor (SR) (> 95°C)
Solution:
Check water circulation in installation
Code:
Meaning:
Loss of the flame signal during operation
Solution:
Press the unblock key on the panel
Code:
Meaning:
No flame detected during the ignition phase
Solution:
Press the unblock key on the panel
6
5
4
Code:
Meaning:
Heat exchanger freezing
Solution:
Carefully defrost the heat exchanger
Code:
Meaning:
Safety thermostat intervention (TL)
Solution:
Press the unblock key on the panel
Code:
Meaning:
Heating system failure (SR)
Solution:
Make sure the sensor and/or wiring is efficient
16
1
12
Code:
Meaning:
Modulating fan failure
Solution:
Check the fan wiring
26
Code:
Meaning:
Modulating fan failure
Solution:
Check the fan wiring
24
Code:
Meaning:
Flame detected before starting the ignition cycle
Solution:
Disconnect the detection electrode cable from the
control board; if the error code disappears, re-
place the cable, otherwise replace the control
board
Code:
Meaning:
Flame detected once the burner has been turned
off
Solution:
Disconnect the gas valve cable from the control
board; if the error code disappears, replace the
control board, otherwise replace the gas valve
Code:
Meaning:
Inner failure
Solution:
Replace the control board
11
20
10
Code:
Meaning:
Modification of the operating parameters due to
EMC disturbances
Solution:
Restore the factory settings
30
Code:
Meaning:
Flue pressure switch intervention (PV)
Solution:
Check the flue discharge state
28