31
VIGAS 18 DPA, VIGAS 26 DPA
Gasifying boilers VIGAS
15. PROBLEMS, CAUSES AND SOLUTIONS
Problem
Cause/ Solution
During heating season boiler power
decreased from previous period.
Used fuel was too humid.
Clean pipes airway system. See chap.12.9.
Clean fan blades. See chap.12.7.
When chimney flap closed, boiler does not
perform and smoke appears.
Smalll amount of primary air. Clean primary air system.
Combustion
chamber
contains
large
unburned pieces of wood.
Nozzle hole enlarged. Replace nozzle. Check secondary air
flaps. See chap.12.4. Decrease the temperature
end.
See chap. 5.3.2.
Leakage of smoke after the door is closed. Insufficient tightness of the door. Adjust the door. Check
door tightness. Door seal needs to be reversed or replaced.
Unable to open chimney flap.
Chimney flap is stuck by tar. Increase the boiler operating
temperature. Use dry fuel. Increase
end. See chap.
5.3.2.
After opening the upper door and chimney
flap, smoke is dispersed in the boiler room.
Low chimney draft. Chimney diameter must be wider than
diameter of boiler flue outlet. Fitting of discharge fan is
recommended. See chap. 13.3.
Cracked fireproof lining.
Not defect Only separates combustion and gasification
chamber.
Fan is not turning. After hand spin it starts
running.
Defected start capacitor. Change fan capacitor.
Boiler is switched off, but fan is still
running.
Damaged fan wiring. Neutral cable for fan is connected to
the ground wire.
Pump is working, even if symbol
does
not show pump in operation.
Damaged pump wiring. Neutral cable for fan is connected
to the ground wire.
During ignition mode, pellets fail to ignite.
Defected ignition coil. Check ignition coil function.
During pellets feeding mode, feeder is not
moving.
Check chain gear, check tourniquet, check motor gear. See
chap.12.6.
Error notification
Error identification
Cause/ Solution
Chyba
Tmax
Na displeji sa zobrazí výpis „MAX“
ak kotol prekročí teplotu 93
0
C.
Red control LED is flashing
When temperature drops below
desired temperature boiler starts
running again.
STB error
Red control LED is flashing
Boiler overheated – when boiler
temperature drops down, reset
STB manually. See chap. 9.1.
Overheated gearbox
Red control LED is flashing
Overheating the motor gearbox
above 80 °C will shut down the
boiler. Check tourniquet, feeder
against latching, etc.
Open door
Red control LED is flashing
Security door contact.When
open boiler shuts down. See
contact D – D of wiring diagram
AK4000EP.
Contact not used.
