10
Check Filter Indicator
The ability of any humidifier to efficiently sup-
ply humidity output relies heavily on the condi-
tion of the filter. As the filter loads with trapped
impurities found in water it gradually loses its
wicking capability. When this happens mois-
ture output is reduced and the humidifier has
to work longer to satisfy the selected setting.
When such a condition occurs, a flashing
“
CHECK FILTER
” message will be displayed,
disconnect the power and check the condition
of the filter.
If a buildup of deposits and severe discol-
oration is evident replace the filter to restore
maximum efficiency.
Humidistat
The humidistat located on the power cord
senses the percentage of humidity in the
air. It causes the humidifier to cycle on
and off to maintain the selected humidity
SET point. The fan will turn on if the
“
ROOM
” reading falls 3% below the SET
point and will continue to run the humidifi-
er until a reading of 1% above the SET
point is achieved. At this point the fan will
stop. The fan will remain off until the
ROOM reading falls 3% below the SET
point again.
Dry Out Mode
When both the water bottle and the base
are empty the red
REFILL
light will
illuminate and the humidifier will automat-
ically switch into
DRY OUT MODE
. The
message
DRY OUT MODE
will appear
on the digital display and the fan speed
will automatically switch to
LOW
speed.
Note:
The digital display will show the
speed the humidifier was operating in
before the
REFILL
light turned on even
though the fan is operating on
LOW
speed. During this time the humidifier will
continue to cycle the fan on and off as
required until the filter is completely dry
thus producing no moisture output. Once
dry, the fan will shut off leaving you with a
dry humidifier that is less prone to mold
and mildew growth. The red
REFILL
light
will be illuminated and the humidifier is
ready for cleaning or refilling as desired.
Humidifier Operations
Note: Be sure humidistat located approxi-
mately 4 inches outside humidifier body
on power cord is free from obstruction
and away from any hot air register.
Note: Fan automatically switches to
"LOW" speed during "DRY OUT MODE"
Display will still show programmed speed.
i.e: HIGH
Dry Out Mode
Check Filter
MA1200 Manual - 71233 7/12/05 2:36 PM Page 10
