Specifications

TROUBLESHOOTING
SUGGESTIONS IN THE EVENT OF PROBLEMS
H1) Low pressure alarm
This trips if the flow sensor detects insufficient combustion air flow.
The flow may be insufficient because the door is open, the door does not close properly (e.g. bad seal), there is an air intake or smoke
extraction problem, or the combustion chamber is clogged.
Check:
- door closure;
- combustion air intake duct (clean, paying attention to the flow sensor components);
- clean the flow sensor with dry air (like that used for PC keyboards);
- stove location: it must never be right against a wall, as laid down by UNI (Italian Standards Institution) fire regulations;
- combustion chamber position;
- smoke duct (clean);
- installation (if it does not comply with regulations or the smoke outlet has too many bends);
- combustion chamber cleanliness (clean with an appropriate frequency for the type of pellet).
If you suspect the sensor is malfunctioning
, carry out cold tests. If the conditions are changed (for example by opening the door) and
the value does not change, there is a sensor problem.
The low pressure alarm may also occur during ignition, since the flow sensor starts monitoring 90 seconds after the ignition cycle starts.
H2) Smoke expulsion motor failure
This trips if the smoke extraction speed sensor detects a fault.
- Check smoke extractor operation.
- Check speed sensor connection.
- Make sure the smoke duct is clean.
SF (H3) flame stop
This trips if the thermocouple detects a smoke temperature lower than the value set, which it interprets as the absence of flames.
There may be no flames because
- there are no pellets;
- there is no combustion air (low pressure alarm);
- the maximum temperature thermostat has tripped (this is very unusual since there would be an excessive smoke temperature).
AF (H4) Ignition failed
This trips if no flames appear and the start-up temperature is not reached within a maximum of 15 minutes.
Check:
- combustion chamber position and cleanliness;
- arrival of combustion air in the combustion chamber;
- heating element/thermocouple operation;
- pellet loading (screw feeder filling on p. 9);
- room temperature (if lower than 3°C use a firelighter) and damp;
- ignition parameter settings: delta T, start-up temperature (in comparison with the detector state reading).
H5) power failure stoppage
Check electrical connection.
H6) Thermocouple failure
Shutdown due to thermocouple failure or disconnection.
Check connection between the thermocouple and the circuit board.
Check operation with cold tests.
H7) Excessive smoke temperature
This trips if the thermocouple measures an excessive smoke temperature.
Excessive smoke temperature may be caused by:
the type of pellet, smoke extraction fault, blocked duct, incorrect installation, or gearmotor "drift".
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