Installation instructions
39
ALARM DIAGRAM AND TROUBLESHOOTING:
Probe alarm signal:
In case of failure or disconnection of one or more temperature probes, the control unit signals that they are missing
indicating the number of the missing probe by a short beep of the buzzer. To eliminate the problem, check the connection
of the probe and/or replace it.
Maximum boiler temperature alarm signal:
If the boiler reaches the maximum operating temperature, the alarm sounds automatically and the display flashes
indicating the safety status; then the control unit activates all the enabled pumps, according to the type of system
managed, in order to disperse excess heat. To silence the alarm, press the Buzzer silencing key
.
Boiler door open alarm signal:
When the wood loading door opens, the bypass connected mechanically opens allowing the fan to directly suction
the flue gas at maximum speed through the bypass.
After the door has closed, the system continues working automatically following the panel board logic.
A microswitch is connected to the bypass opening system which is activated when the door opens; the control unit
will begin to let out a series of short beeps at regular intervals and the message “BOILER DOOR OPEN” will appear
at the bottom of the display.
• The fan will run at full speed to suction the flue gas through the bypass.
• After the door has closed, the system continues working automatically following the panel board logic.
Just close the door to silence the alarm.
Remember that keeping the door open for long periods “during reloading”, could deform the flue gas intake impeller.
Probe temperature measurement fault:
Should one or more probes supply faulty temperature measurements, try to replace it/them; also check to make sure
that no voltage reaches the input of a possible chronothermostat.
In case of faulty readings, try to disconnect the wires from the chronothermostat input.
Safety device triggering:
When the set boiler water temperature has been reached (PARAMETER 0), the boiler fans stops.
If this temperature is exceeded and it reaches the temperature set in PARAMETER 2, an acoustic alarm signal will
be triggered and all the pumps will be enabled to run.
When the water temperature of the system drops, boiler operation will be restored automatically; if on the other hand
the temperature increases beyond the safety thermostat calibration value (100°C), standard operating conditions must
be restored manually by resetting the safety thermostat itself: the key is found on the front of the panel board, at pos.
, even in the presence of a sudden drop of the system water temperature.
This is the operation which must be performed to restore fan operation.
Power cut:
Safety is ensured by the thermal discharge valve (the mounting of which is
mandatory
for all solid fuel fired appliance)
which gets rid of excess inertia.
