19
Boiler built-in fault finding system
SANITARY
GREEN LED
RED LED
HEATING
GREEN LED
Ionic control during lock-out
OFF
ON
OFF
Activation of safety thermostat
OFF
ON
ON
Activation of fumes thermostat
ON L
ON
OFF
Boiler settings error FF/ATM
(1)
(1)
(1)
Activation air pressure switch
ON
ON
OFF
Parasite flame
ON L
ON
ON L
Activation of H
2
O flow switch
OFF
ON
ON L
Failure of NTC heating system sensor
OFF
ON L
ON L
Failure of NTC sanitary system sensor
ON L
ON L
OFF
Activation of safety thermostat (during sanitary function)
OFF
ON L1
ON L
Boiler in central heating phase
OFF
OFF
ON L
Boiler in domestic hot water cycle
ON L
OFF
OFF
Boiler in anti-frost cycle
ON L
ON L 1
OFF
Stand-by
ON L 1
OFF
OFF
Stand-by (during heating phase)
ON
OFF
ON
Stand-by (during summer phase)
ON
OFF
OFF
Remote control activated
ON
OFF
ON L0
ON L0
lit LED flashing 2 sec. ON – 0,2 sec. OFF
ON L1
lit LED flashing 5 sec. ON – 0,2 sec. OFF
ON L
lit LED flashing 0,5 sec. ON – 0,5sec. OFF
ON
LED on
OFF
LED off
(1)
lit LED flashing of all (ON quick and 3 sec. OFF)
The appliance undergoes the ignition phase, and once firing it continues functioning until
the preset temperature is reached. Ignition and the following stops shall take place
automatically according to the preset temperature.
If the safety thermostat is activated, as indicated by the corresponding LED (see Chart No.
1), the boiler goes through a thermal safety stop. In this case, turn “1” adjustment in
stand-by position and later in heating position to restart the ignition procedure.
•
Make sure that the adjustment devices function properly.
•
Control the production of domestic hot water.
•
Make sure that overheating thermostat functions properly.
Once the boiler has been fired and while operating under the indicated conditions,
the following stop and ignition checks must be carried out:
•
Modifying the adjustment thermostat calibration.
•
Regulating the room thermostat (if supplied).
If the results are successful, control the combustion (fume analyses) and the fuel flow,
checking the values indicated on the data plate.
Warning
Reset all the safety and control functions to guarantee their correct
functioning before setting the appliance to operation.
Summary of Contents for Stella
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