MARMON ANGELO PO COMBISTAR FX, Technical Manual

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Copyright by Servizio Clienti ANGELO PO Spa
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4.3. Combustion control board: logic operation
The logic of the Combustion control board with several steps or state: there are 10 states
as reported in the table and each one of these corresponds to a check / audit and controls
to the blower and to the gas.
STEP Blower fan
Blower fan
speed Gas valve
Description
0 OFF 0 OFF STANDBY: ignition not required
1 OFF 0 OFF
CONTROL: : ignition required, no flame checking and
blower fan speed lower than 500 rpm. As soon as the
check is finished it pass to step 2, otherwise after
20”
appears the alarm GAS:F11 or GAS:F24.
2 ON Ignition speed OFF
START: blower fan start and the ignition speed has
been checked. As soon as the check is finished it pass
to step 3, o
therwise after 30” appears the alarm
GAS:F24.
3 ON Ignition speed OFF
PURGING: the blower fan run at the ignition speed for
few seconds (7 sec) to purge the circuit from exhaust
fumes.
4 ON Ignition speed ON
IGNITION: gas valve opens and the igniter makes the
spark until the flame sensor recognize the flame or
until the safety time (3 sec) is passed.
5 ON Target speed ON
WORKING: ignition done successfully. Power board
control the power.
6 OFF 0 OFF STOP: burner turn off.
7 OFF 0 OFF BLOCKAGE
8 OFF 0 OFF BLOCKAGE: ignition lock until RESET.
9 OFF 0 OFF RESET: RESET activated and pass to phase STANDBY