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6. PRINCIPAL CAUSES OF ERRORS AND SOLUTIONS
The following table describes the anomalies that can be presented with greater frequency and the possible solutions. When
this is indicated, it will be necessary for a professional or Technical Assistance Service authorised by TJ Chimeneas y Biomasa to
conduct the checks described.
Problem
Fire too low or won't catch
Fire too strong
Smoke emission
during lighting
Smoke emission
during combustion
Cause
Damp or green firewood
Firewood too big
Poor quality or unsuitable
firewood
Insufficient air
Insufficient draught
Excessive air
Excessive draught
Poor quality firewood
Smoke extractor flue too cold
Room with depression
Not enough firewood
Insufficient draught
Wind in the smoke extractor
Solution
Damp, green or very young firewood contains an ex-
cessive quantity of water which results in much of the
heat energy evaporating with the water. The solution is
to use quality firewood or fuel in accordance with the
instructions in section 3.1.
To initiate combustion, as well as the "fire lighter packs"
we recommend that you use small logs with a greater
surface exposed to the flame and easily consumed.
Not all types of wood offer the same performance. For
optimal conditions, we recommend that you use the fu-
els indicated in section 3.1.
Oxygen from the air is crucial for combustion. Ensure
that device has an open air vent (primary and/or
glass), in accordance with the instructions in section
3.2. To facilitate the start of combustion, open the
door some 3 or 4 cm until the glass is heated. Simi-
larly, it is also possible for some entry to be obstructed.
Check that the smoke extractor flue is not obstructed,
that its shape is suitable as described in section 2.2 and
arrange de-sooting if necessary.
Closure of primary air vent to achieve the strength of
flame desired. If the problem persists, close the air in
the glass gradually.
Install a draught regulator.
Not all types of wood offer the same performance. For
optimal conditions, we recommend that you use the fu-
els indicated in section 3.1.
Heat the smoke extractor flue in the initial phase of
combustion with the help of a fire-lighter pack, a little
paper and small logs.
The atmospheric pressure of a room is low, causing the
smoke to drift in that direction, rather than be extracted
via the chimney. The solution is to leave a window ajar
until the combustion reaches steady conditions. If the
problem persists, install a ventilation grille in the room.
A small quantity of material causes poor combustion
and a lower temperature of smoke causing reversals.
Use a full load of firewood.
Check that the smoke extractor flue is not obstructed,
that its shape is suitable as described in section 2.2 and
arrange de-sooting if necessary.
Install an anti-reversal system that prevents the entry of
wind in the smoke extractor.
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