MCZ Antares '03 - Manual (Page 40)

Use of the stove
3.21 Other messages
“COOL FIRE”
Generally appears at the cooling stage following a shutdown caused by an electrical power-cut.
“MODULATION”
Appears when the conditions set on the local / remote room thermostat are satisfied. In these
conditions, the stove modulates its power level from maximum to minimum. If the message is
accompanied by "HOT SMOKE", it means that the temperature of the smoke is above the safety
threshold preset as default. The stove is trying to cool down by changing to minimum power level
and increasing the speed of the heat-exchanger to maximum. Once this objective is reached, it
returns to the "ON" phase.
“STOP FIRE”
This is a phase which is repeated periodically every hour and has the function of cleaning the
grate of unburnt residues of pellets, which, when the stove is in operation, are deposited on the
bottom of the grate near the passages for combustion air. For 30 seconds the smoke-extracting
fan goes at maximum revs, thus purging the grate and ensuring free passage for the combustion
air through its dedicated airways.
3.22 Lockout of the stove
The following things can cause the stove to lock out:
•
Overheating of the stove body
• High pressure in the outlet fumes (as read by the
pressure switch) and therefore possible obstruction of
the smoke discharge system or external back-
pressure.
The lockout is indicated by the LED (6) lighting up,
accompanied by an audible "beep".
In this situation the shutdown cycle is automatically activated.
Once this process has started, any operation which is an
attempt to reset the system is useless.
The cause of the lockout is shown on the display (8).
When the stove is cold:
If the message "Alarm hot pel" appears, it will be necessary
to unscrew the cover of the thermostatic sensor fitted to the
back of the stove and press the red button to reset it. Refit
the protective cover. Fig.24-25
If the message "Alarm pressure" appears, it will be
necessary to check that the WHOLE flue system, including
the combustion chamber, is clean and free of all obstruction
(it is recommended that this operation be conducted by a
specialist MCZ technician).
Only after the cause of the blockage has been
permanently eliminated can a fresh attempt to
relight the stove be made.
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Fig.24
Fig.25