Operation Manual
Pressure switch malfunction
“ALF 2” stove status
Faulty pressure switch
Replace the pressure switch (use only
original spares)
No power supply to the auger
Check the electrical connections
(contact a Piazzetta After-Sales
Service Centre or an authorised
person)
Thermal cutout
“ALC” stove status
(Hopper thermostat)
Blocked ue Check and clean the ue
Faulty thermostat
Replace hopper thermostat (use only
original spares)
Faulty electronic board
Replace the electronic board (use only
original spares)
Faulty fan
Check fan operation and replace if
necessary (use only original spares)
Grate requires cleaning Clean the grate (see section 7.1)
Problem Cause Solution
Flue gas speed malfunction
“ALF3” stove status
No connection between the 3-pin
terminal of the black-red-white cable
of the ue gas fan and the electronic
board
Check correct insertion/position of the
connector (see wiring diagram)
Faulty electronic board
Badly positioned black-red-white ue
gas cable to electronic board
Replace the electronic board (use only
original spares)
Check that the sensor is correctly
connected
Flue gas speed malfunction
“ALF4” stove status
No connection between the 3-pin
terminal of the black-red-white cable
of the ue gas fan and the electronic
board
Check correct insertion/position of the
connector (see wiring diagram)
Faulty electronic board
Badly positioned black-red-white ue
gas cable to electronic board
Replace the electronic board (use only
original spares)
Check that the sensor is correctly
connected
H07032120 / DT2002308 – 00
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English