Unical PELLEXIA 80, Instructions For Installation, Use And Maintenance Manual, Page: 44 / 52

44
3.15 - TROUBLESHOOTING
Problem:
- The panel board does not switch on.
Remedy:
- Make sure the panel board is powered.
- Check integrity of the fuse on the board
Problem:
- The fan does not start.
Remedy:
- Make sure no alarm appears on the display.
- Check the power connection of the fan.
- Check integrity of the fuse on the inverter.
- Check the inverter.
- Replace the fan.
Problem:
- The burner starts up but triggers an alarm shortly after-
wards.
Remedy:
- Check that the screw is feeding the pellets correctly.
- Check that the value of the burner flame signal is above 50.
- Check the condition of the pellets and replace them if neces-
sary.
Problem:
- The start-up process goes smoothly until pre-loading of
the pellets, after which an alarm is triggered.
Remedy:
- Check the nature of the triggered alarm.
- Check the condition of the igniters.
- Replace the igniters.
Other alarms that can occur during use of the boiler, and
the measures to be taken.
Triggering of the pellet clogging sensor.
- Check for clogging of pellets, or check whether the sensor is
dirty.
Triggering of the water safety thermostat
- Check the working order of the pumps.
- Reset the thermostat manually.
Triggering of the pellet fire thermostat
- Check the draught in the flue.
- Check that the smoke ducts containing the turbolators are
not clogged with ash.
- Clean them if necessary.
- Resetting occurs automatically when the temperature de-
tected by the thermostat falls by 10°C.
Check that the level of pellets in the tank does not fall below
the reserve line, because this triggers emergency shutdown of
the boiler.