MECHANICAL TROUBLESHOOTING
Symptom
Cause Remedial Action Prevention
Urine Odor in
Washroom
Horizontal runs or
downward slopes in
vent pipe
Re-install the vent so there are no
horizontal or low points where
condensation can collect.
Install wall brackets on vent pipe
to prevent settling.
DO NOT install horizontal runs;
liquid will collect and block
ventilation, causing odor.
Fan has failed
Have your serial number ready and call
SUN-MAR for a replacement.
Instructions are included with the
replacement fan.
Competing Appliances
OR
Downdraft
If you believe that there may be a
downdraft outside of the building, it may
be a good idea to remove your fan
assembly prior to installation and set
the fan gate to ‘0’ to prevent urine odor
in the bathroom. (This is specific to the
electric models.)
Install a 12volt fan in vent pipe.
(CENTREX 3000 NE) Wood stoves or
furnaces installed in a tightly sealed
room with the composting toilet may
draw air in causing a vacuum in the
room. This will draw air down the vent
pipe.
Downdraft is dependent on wind
direction as well as natural
obstructions etc.
Install the vent so it goes above
the highest peak of the roof.
Occasional
Urine Odor
Outside
(CENTREX 3000 NE)
1) Vent stack not
installed above
peak of roof.
2). If vent stack is
installed above
roof line, natural
obstructions, such
as tall trees, being
located in a valley
or close to a hill
may be causing
downdraft.
1) Check that the vent is installed above
the peak of the roof. If not, extend the
vent. Guy wires may be necessary.
2) Add lime to the evaporation chamber
– Contact Sun-Mar for specific
instructions. You will have to rake more
often if you do this.
3) SUN-MAR has a filter box available
which will filter the ammonia out of the
vented air in a downdraft situation. Call
SUN-MAR for details.
Follow instructions on page 7 & 8.
Fan Noisy
Bearings beginning to
wear, OR
Dust/debris gathering
on blades
1) If it is rattling, it may need to be
cleaned or the bearings are worn and
the fan needs to be replaced.
2) A low “hum” is the normal sound the
fan will make. If you are in a very quiet
setting it will be more noticeable. If this
is the case, consider purchasing a fan
speed control so that the fan may be
turned down.
The fan is a constantly moving
part and has a finite service life.
Clean the fan with a small brush
and/or compressed air nozzle
once a year. This will prevent wear
and lengthen the life of your fan.
15
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