Description of functioning
technical
40
F10
This fault that occurs when there is a problem with the gas valve or PCB.
As the burner shuts down the solenoids on the gas valve. These close one at a time
until the fl ame extinguishes. If the fl ame remains on for 5 seconds the PCB will
repeat the shut down by turning off the solenoid that failed the 1st time.
If a flame continues to be detected after the 2nd shut down sequence the boiler
will lock out.
Possible causes:
- PCB failure (one of the electrovalve relay is broken)
- Gas valve failure
F11
Occurs when the DHW thermistor is out of range, open or short-circuited
If this fault ocours the heating mode will work normally and the DHW mode will
also work but using the heating thermistor as reference to heat the DHW.
This fault will auto-reset when the thermistor is in range.
F13
It´s a failure of the heating thermistor, that it is out of range, open or short-circuited.
If this fault occurs, the boiler blocks. This fault auto-reset , when the thermistor returns
within normal operating range.
Possible causes:
- Heating thermistor failure
- Faulty PCB
- Minimum very high
NC
No Comunication. It’s a comunication error between main control circuit and front
panel circuit.
NOTE: Apart from the failure codes, the word “Err” may appear on the control panel.
Meaning: If it appears on the 4 digit display, it means that there is no communication
between the control card and the control panel card.
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