PELLET STOVES Chapter 6
INSTALLATION AND USE MANUAL
page 47
Maintenance and cleaning Technical service - Rights reserved MCZ S.p.A. - Reproduction prohibited
6. PROBLEMS / CAUSES / SOLUTIONS
ATTENTION:
All repairs must be carried out exclusively by
a specialised technician, with the stove
completely cold and the electric plug pulled
out.
PROBLEM POSSIBLE CAUSES REMEDY
Pellets not being fed
into the combustion
chamber.
• Pellet hopper empty.
• Feeder screw blocked by sawdust.
• Reduction motor defective.
• Defective electronic board.
• Refill pellet hopper.
• Empty the hopper and manually free the
feeder screw of sawdust.
• Replace reduction motor.
• Replace electronic board.
The fire goes out or the
stove stops
automatically.
• Pellet hopper empty.
• Pellets not being fed in.
• Intervention of pellet temperature sensor.
• Door not closed properly or gaskets
worn.
• Unsuitable pellets.
• Low pellet feed rate.
• Combustion chamber dirty.
• Smoke outlet obstructed.
• Pressure switch cuts in.
• Smoke extraction motor failed.
• Refill pellet hopper.
• See previous problem..
• Let the stove cool down completely, reset
the thermostat till lockout ceases, relight
stove; if problem persists, contact
technical assistance.
• Close the door
or replace the gaskets
with original spare parts.
• Change to a type of pellet recommended
by the manufacturer.
• Have the fuel feed rate checked by
technical service.
• Clean the combustion chamber, following
instructions in the manual.
• Clean the smoke duct.
• Check if smoke duct is blocked and if
the pressure switch is operating
correctly.
• Check the motor and replace if
necessary.
The stove runs for a
few minutes and then
goes out.
• Lighting cycle not completed.
• Temporary failure of electricity supply.
• Smoke duct obstructed.
• Temperature sensors defective or broken.
• Sparkplug failure.
• Re-run lighting cycle.
• See previous instruction.
• Clean smoke duct.
• Check and replace sensors as
necessary.
• Check the plug and replace if
necessary.
Pellets build up in
grate, door glass gets
dirty and flame is weak.
• Insufficient combustion air.
• Pellets damp or unsuitable.
• Smoke extractor motor broken.
• Check that the room air intake is present
and free.
• Check that the combustion air filter on the
pipe Ø 5 cm for air inlet is not obstructed.
• Clean the grate and check that all the
airways are clear.
• Carry out a general cleaning of the
combustion chamber and the smoke duct.
• Check the state of the door gaskets.
• Change the type of pellet.
• Check the motor and replace if
necessary.
