TERMOTECHNIKA Ecomat 15, Operation And Maintenance Manual

Page: 26 / 33

26
- proceed with remaining steps in reverse order.
4.3 Causes of faulty operation and fault removal
A. The burner does not ignite -
the screen displays “no fuel”
- no fuel in the fuel hopper > replenish the fuel by filling feeder with pellet until it pours off
the outlet pipe
- burnt fuse which secures electric circuit of the ignition device, radiator, feeder and stoker
> replace
- damaged ignition device > replace; in case of difficulties please refer to authorized
service; before the failure is removed, the fuel can be ignited manually e.g. using
barbecue kindling placed onto the burner grate in a small amount of fuel
- burner damage or lockout - foreign object in the fuel, too high amount of fine fractions in
the pellet (sawdust, ashes), too low pellet compression value or the pellet is wet > inspect
- damaged stoker - pellet gets stuck in the feeding pipe > inspect whether the stoker is
operating, if not: refer to authorized service
- light-sensitive detector damaged or sooty - cannot recognize the flame > inspect the
burner head brightness ratio if flame is present on the burner > clean or replace the light-
sensitive detector
- excessive flue draught within the chimney > mount a flue draught adjuster
B. Burner fails to ignite -
“ALARM” displayed on the screen – temperature sensor
damaged > replace or inspect connection of a sensor indicated on the screen.
C. Burner fails to ignite -
the screen displays “ALARM” – emergency stop.
This alarm is
displayed when the boiler door is secured by a limit switch against accidental opening. If
that is the case, check whether the door is tightly closed. If it is impossible to remove the
alarm, check operation of the limit switch and its connection.
D. Boiler overheating emergency -
screen displays “boiler overheated”
- boiler water temperature set by the fitter has been exceeded - wait until the water
temperature inside the boiler falls below emergency value
- turn off the alarm by pressing the STOP button > check whether the heat transfers from
the boiler i.e. whether the central and usable warm water pumps operate correctly.