18
8.0 Problem Solving
Problem Reason for Problem Solution
Dark, dirty film on
door glass
Burning wet or green firewood OR
Leaking door seals.
Ensure only dry seasoned wood is used.
As per new air plan, it is an offence in the
Environment Canterbury region to burn wood
with greater than 25% moisture.
Check door and glass seals. Your Masport
Dealer can help with this.
To remove dirty film try following:
1. Burn with damper open for 30 minutes.
2. Try to clean glass with damp news paper and
ash when fire has completely cooled down
3. Try using non-caustic oven cleaner
Caution: Do not scrub using steel products or
abrasive material, as it can leave scratch marks
on the glass and also damage printing on the
glass.
Occasional puffs of
smoke entering the
room while fuel
loading
There could be not enough flue draft due
to insufficient flue height in relation to your
roofline, trees or other high obstacles near
your home, which can cause a down draft.
The fuel will eventually ignite and when it
does so, the build up of gasses will cause
a pressurisation forcing smoke into the
room.
Mystique burner has mechanical interlock that
prevents opening of top combustion door unless
damper is opened. After switching damper
handle from “OPEN” to “CLOSE” position, wait for
30~45 seconds before you open the top
combustion chamber door.
This is usually a problem when the wind is
coming from one particular direction and requires
an experienced installer to remedy, by either
extending your flue height or fitting an anti down
draft flue cowl.
The down draft flame
is pulsing or puffing
when damper is
switched to ’CLOSE’
position
This is likely to happen when firing the
burner from cold start.
Not enough embers around the downdraft
injector can be another reason.
Open the damper for 1~2 min and close it.
Open the damper and then the top combustion
chamber door and using rake, level the ember
bed. Particularly leaving good embers around
the downdraft injector
Poor performance of
the fire or Smoke
entering into room
due to extreme
negative pressure in
the house
This is when the air circulates down from
the chimney towards the interior of the
house which is at negative pressure.
Energy efficiency practices and new
building code rules are making our houses
more and more airtight. This makes the
house’s energy efficient but also makes
them more sensitive to negative pressure
when air is exhausted from the house.
This can be because of large extraction
fans which cause extreme negative
pressure in the house when they are
operating.
This negative pressure works against flue
system draft. In severe cases the
negative pressure in the house overcomes
the flue system draft and the appliance
begins to spill smoke, especially when a
fire is started or when it dies down to
coals. Also it can starve fire from air
needed resulting in poor performance.
To prevent this extreme negative pressure open
a window approximately 6mm to allow
combustion air enter into the room.
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