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14
660Y1400 - A
MCBA PARAMETERS FOR THE SPECIALIST
STANDBY MODE
When the boiler is switched on, it starts up in Stand-by mode, as shown in the figure above.
This is the standard mode of the MCBA. The MCBA automatically returns to this mode after 20 minutes if no key is pressed on the MCBA interface. The
new parameters will become active.
The first digit indicates the boiler’s current status, depending on the situation of the boiler and the burner. The last two digits indicate the boiler
temperature.
Status Boiler Function
0
Standby, no heat demand
1
Fan pre-purge/post-purge
2
Ignition
3
Operation of the burner for heating
4
Operation of the burner for domestic hot water production
5
Waiting for a signal from the air pressure switch or to obtain number of start revolutions.
6
The burner is off because the set value has been reached. There is still a demand for heat..
7
Heating pump time delay after demand for heating.
8
Heating pump time delay after demand for DHW.
9
Blocked burner: refer to "Blockage and Error Codes", page 30
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