Emerson Ma1200-1, Ma1200 Owner's Manual

Part No. SP6550 Printed in Canada

CAUTION: READ ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLATION.

SAVE THIS OWNER’S MANUAL FOR FUTURE REFERENCE.

Model No.

MA 1200 0

MA 1200
Evaporative Console
Humidifier Owner’s Manual

MA1200 Manual - 71233 7/12/05 2:36 PM Page 1

Safety Signal Words

DANGER: means if the safety information is

not followed someone will be seriously
injured or killed.
WARNING: means if the safety information is
not followed someone could be seriously
injured or killed.
CAUTION: means if the safety information is
not followed someone may be injured.

1. To reduce the risk of fire or shock hazard,
plug humidifier directly into a 120V, A.C.
electrical outlet. Do not use extension
cords.

2. Keep the electric cord out of traffic areas.
To reduce the risk of fire hazard, never put
the electric cord under rugs, near heat reg­isters, radiators, stoves or heaters.

3. Always unplug the humidifier before mov­ing it, removing the fan assembly section,
before cleaning, or whenever the humidifi­er is not in service.

4. Keep the humidifier clean.

5. Do not put foreign objects inside the
humidifier.

6. Never use your humidifier while any part is
missing or damaged in any manner.

7. To reduce the risk of electrical hazard or
damage to humidifier, do not tilt, jolt or tip
humidifier over while unit is running.

8. To reduce the risk of damage to humidifier,
unplug humidifier when water bottles are
empty or when the humidifier is not in use.

9. To reduce the risk of accidental electrical
shock, do not touch the cord or controls with
wet hands.

10.Note the warning label shown below.

WARNING: To reduce the risk of fire, electric
shock, or injury always unplug before filling,
servicing or cleaning.

GENERAL SAFETY INSTRUCTIONS

2

Limited Warranty

All products covered by this Owner’s Manual are warranted against defects in work­manship and materials for one year from the date of sale except for motors, which
are warranted for two years. This warranty does not apply to damage from accident,
misuse or alteration nor where the connected voltage is more than 5% above the
nameplate voltage, nor to the equipment improperly installed or wired
or maintained in violation of this Owner’s Manual. No other written or oral
warranty applies. No employee, agent, dealer or other person is authorized to give
any warranties on behalf of Emerson.
The customer shall be responsible for all costs incurred in the removal or
reinstallation and shipping of the product for repairs. Within the limitations of
this warranty, inoperative units should be returned, with a copy of the sales receipt,
freight prepaid to a local repair service center and we will repair or replace, at our
option, at no charge to you with return freight paid by Emerson. It is agreed that such
repair or replacement is the exclusive remedy available from Emerson and that

Emerson Is Not Responsible For Damages Of Any Kind, Including Incidental

And Consequential Damage. Some states or provinces do not allow the exclusion

or limitation of incidental or consequential damages, so the above exclusion or lim­itation may not apply to you.
The warranty gives you specific legal rights, and you may also have other rights
which vary from state to state or province to province.

Sales receipt required as proof of purchase for warranty claims.

MA1200 Manual - 71233 7/12/05 2:36 PM Page 2

Description MA1200

* Gallon Output/24 hrs 12

Capacity of Bottle 1.9 Gallons
Capacity of Base 2.0 Gallons

* Sq. Ft. Coverage 2500

Fan Speeds 3
Replacement Filter MAF-1
Power Light Yes
Fill Light Yes
Auto Humidistat Yes
Auto Shut Off Yes
Controls

Electronic (Push Button)

Casters Yes (4)
CUL Listed Yes
Volts 120 A.C.
Hertz 60
Amps 0.80
Watts 80

Know Your Humidifier

3

* Based on an area with average insulation

and an 8 foot ceiling height
ANSI/AHAM HU-1-1997, SEC. 8.1

Bottle Handles

Speed Control

Bottle

Base

Filter:
Replacement No.
MAF-1

Housing
Assembly

Fan Assembly

Humidistat
(On power cord)

Casters

MA1200 Manual - 71233 7/12/05 2:36 PM Page 3

Your new Emerson MoistAir humidifier is
designed to satisfy home humidity
requirements through the principle of
evaporation of water in the air.
After water is added to the humidifier, the
filter begins to soak up the water and will
become saturated in approximately 30
minutes. Air drawn in through the open­ings in the lower housing passes through
the filter by means of a circulation fan.
As air passes through the filter, moisture
is absorbed into the air and then
released in the form of vapor. No water
droplets will enter the home. All evapora­tion into the air takes place in the humidi­fier, which means that the residue left by
evaporating water is not passed into the
home, but remains in the filter.
This natural process of evaporation helps
eliminate the chance of white dust in the
humidified output air.

CAUTION: Use only liquid EPA
Registered Bacteriostat available
from your local retail store. Under no
circumstances should you use water
treatment products designed for
Roto belt or Ultrasonic humidifiers.

CAUTION: To reduce the risk of
injury, fire or damage to humidifier,
use only cleaners specifically recom­mended for humidifiers. Never use
flammable, combustible or poisonous
materials to clean your humidifier. To
reduce the risk of scalds and dam­age to humidifier, never put hot water
in humidifier.

Your new Emerson MoistAir humidifier is
supplied with four swivel casters for ease
of maneuverability. Remove the casters
from the top of the packing material
inside the carton. The casters press into
the bottom of the base at the locations
shown. To make assembly easier remove
the water bottle, housing assembly and
filter and flip the base upside to install.
See steps 2-4 of "Replacement and Care
of Filters" section on page 12 for proce­dure. Take care not to damage the floats
or base assembly if choosing this method
of assembly. Press casters into location
beside X.

Note: Casters should be installed manu­ally. Do not use any tools to install them.
Once installed return the unit to its origi­nal state and proceed to "Location
Instructions.

Humidifier Operation

Unpacking and Assembly

4

Humidified air is
then released
through the top

Dry air
enters
through the
louvers in
the housing

X

X

X

X

MA1200 Manual - 71233 7/12/05 2:36 PM Page 4

Location Instructions

WARNING: For your own safety, do
not use humidifier if any parts are
damaged or missing.

Step 1

Place humidifier on a flat level surface in
an area of house where most humidity is
needed, or one which would likely result
in moist air being circulated throughout
the house such as near a cold air return.
Placing the unit level is very important.
Special attention should be given to unit’s
level if the humidifier is located on car­peting. Moist air (humidity) produced will
disperse into the whole house, but the
area closest to the unit will have the high­est humidity. If the unit is positioned close
to a window, condensation may form on
the window pane. If this is not appropri­ate the unit should be repositioned in
another location.
NOTE: Due to release of cool, moist air
from humidifier, it is best to direct air
away from home thermostat and hot air
registers. It is best to position humidifier
next to an inside wall. Hot air registers
and cold air from outside walls can affect
the efficiencies of the controls. Unit
should not be placed where warm air
from a hot air register blows directly on
unit.

Step 2

The humidifier should be positioned with
the back (cord exit side) and left side, at
least 2 inches away from the wall. Air
needs to enter through all of the louvers
in the housing assembly in order for the
humidifier to operate at peak efficiency.

Locate nearest 120V A.C. wall socket in
the location desired, preferably on inside
wall. With the humidifier in the desired
location, route the electrical cord safely
so no one will trip or upset the humidifier.
Plug in the electrical cord.

WARNING: To reduce the risk of fire
or shock hazard, humidifier should
be plugged into a 120V A.C. outlet.
Do not use extension cords.

To reduce the risk of electrical shock, this
humidifier has a polarized plug (one
blade is wider than the other). This plug
will fit in a polarized outlet only one way.

If the plug does not fit fully in the outlet,
reverse plug. If it still does not fit, contact
a qualified electrician to install the proper
outlet. Do not change the plug in any way.

Electrical Hook-Up

5

Note: Be sure humidistat located
approximately 4 inches outside humidi­fier body on power cord is free from
obstruction and away from any hot air
register.

At least 2"
from wall

MA1200 Manual - 71233 7/12/05 2:36 PM Page 5

WARNING: To reduce the risk of
shock, always unplug humidifier
before cleaning or servicing.

WARNING: To reduce the risk of fire
or shock hazard, do not pour or spill
water into control or motor area.
If controls get wet, let them dry
completely and have unit checked by
authorized service personnel before
plugging in.

This humidifier is designed for use with
the water bottle located to the right of the
upper grill. The water bottle holds 1.9 gal­lons of water. The humidifier should be
positioned where it will be operating.

To fill the whole house humidifier, grasp
the bottle handle at the top of the bottle
and lift it straight up and away from
humidifier base. Take care not to bump
or damage spring valve assembly on
bottom of bottle.

NOTE: If it is desired to use approved
bacteriostat, follow directions correctly.

The bottle of the whole house humidifier
will hold 1.9 gallons of water.

The water bottle is designed with a Side
Fill Cap. Remove the “Side Fill Cap” on
the side of the water bottle by twisting
counterclockwise.

Place the opening of the water bottle
under a water faucet and fill. If desired,
add liquid bacteriostat to help control the
build up of bacteria and algae. Do not use
solid water treatments. Solid debris could
make the lower valve leak.

Install the “Side Fill Cap” by twisting
clockwise. Hand tighten only.

Check for possible leaks by perform­ing the following:

1. Grasp bottle handle and hold the bottle
upright over a sink.

2. Press up on valve plunger for about
one second to let out a little water.

3. Release the plunger.

Water Fill

6

Turn Counterclockwise
to Remove “Side Fill
Cap”

Spring Valve Assembly

Base

Bottle

MA1200 Manual - 71233 7/12/05 2:36 PM Page 6

7

4. Listen for air bubbles. Look for leaks
around the “Side Fill Cap” and valve
plunger.

5. If you hear air bubbles or see leaks,
retighten the “Side Fill Cap” and
repeat steps 1-4.

Wipe off excess water from the bottle.
Position the water bottle back into the

humidifier base to the right of the grille.
The “Side Fill Cap” must be facing out­ward. When positioned properly, the
plunger will open and water will flow into
the base. The base will hold the entire
contents of the water bottle. Allow up to
one minute for the water to flow into the
base. Once the bottle is empty, remove it
and refill it as mentioned earlier. Return it
to the right side of the grille. The humidifi­er is now filled to capacity.

The water bottle may be filled at anytime
as necessary during operation. To benefit
from less frequent filling let the humidifier
exhaust both the water from the bottle
and base before filling.
The unit is now ready for operation.

The operating controls of your MoistAir
Quiet Comfort whole house humidifier
are located towards the front of the
humidifier.

Familiarize yourself with the controls.
Refer to the diagram of the control
area for the correct nomenclature used in
this manual.

To Operate the Controls

Power Button / Light

When the unit is plugged in and the
power button is pressed once the red
power light will come on. The power light
will stay on until the power button is
pressed again turning the unit off or until
the unit is unplugged.

Digital Display

The digital display will also show readouts
when the unit is turned on. Initially there
is a slight delay while the electronics cali­brate. Two bars (- -) flash during this
time. Once calibration is complete a
ROOM humidity reading between 25% ­95% will be displayed. Aflashing 25 dis-

play indicates that the room humidity is
less than 25 %.

Note: The default settings at initial start­up are LOW fan speed and 65% SET
humidity. After desired settings are
selected by the user, they remain as
defaults as long as the unit remains
plugged in and there is no power
interruption. If the unit is unplugged the

original default settings are employed.

IMPORTANT: Water damage may
result if condensation starts to form
on windows or walls. Humidity SET
point should be lowered until
condensation no longer forms.

Operating Humidifier Controls

Base

Bottle

Digital Display

Refill
Light

On
Light

Function
Buttons

MA1200 Manual - 71233 7/12/05 2:36 PM Page 7

Speed Button

This humidifier is equipped with a 3­speed fan control. Each push of the
speed button advances the mode through
the settings of HIGH, MEDIUM, and
LOW. The selected setting is displayed
on the digital readout. The higher the set­ting, the faster water is evaporated and
released into the air.
LOW is the quietest setting and is provid­ed for conditions that do not require a
rapid evaporation rate.

Humidity Control

The +/- buttons allows you to adjust the
humidity to suit your needs. This humidi­fier will automatically cycle on and off as
required to maintain the selected setting.
The readout displays both actual (ROOM)
and desired (SET) humidity percentage
(%) settings. The ROOM reading is the
larger display of the two. The ROOM
readout is displayed in 1% increments
and has a range of 25% to 95%. If the
room humidity level is equal to or less
than 25% the display will show a flashing

25.
The SET readout has a range of 30% to

65% and is adjusted in increments of 5%.
Each press of the

(+) button increases the setting by 5%
and conversely each press of the ( – )
button decreases the setting by 5%. A
SET point of 65% operates the humidifier
continuously regardless of the ROOM
reading.
The humidistat that senses the readings
is located on the power cord. Insure that it
is free from obstruction.

8

Operating Humidifier Controls (cont’d)

Speed

Humidity
Buttons

Constant On Setting

MA1200 Manual - 71233 7/12/05 2:36 PM Page 8

9

Refill Light

The humidifier base and bottle hold approxi­mately 2 gallons of water each. The bottle
empties into the base during operation.
When the base empties the red REFILL light
will illuminate informing additional water is
required. Also at this time the unit will auto­matically switch into “DRY OUT MODE” and
continue to run on LOW speed until the filter
is dry. The message “DRY OUT MODE” will
appear on the digital display and the fan
speed will switch to LOW speed. Note: The
digital display will still show the speed the
humidifier was operating in before the
REFILL light turned on even though the fan
is operating at LOW speed. During this time
the room humidity level will continue to be
monitored and the humidifier will cycle the
fan on and off as required. If DRY OUT
MODE is not desired, refill the humidifier
with water.
Note: Once the dry out cycle is complete the
fan will shut off and the REFILL light will stay
illuminated. The humidifier will automatically
start again when it is refilled.

Operating Humidifier Controls (cont’d)

Refill Light

MA1200 Manual - 71233 7/12/05 2:36 PM Page 9

10

Check Filter

Indicator

The ability of any humidifier to efficiently sup­ply humidity output relies heavily on the condi­tion of the filter. As the filter loads with trapped
impurities found in water it gradually loses its
wicking capability. When this happens mois­ture 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 discol­oration 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 humidifi­er 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 automat­ically 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 approxi­mately 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

1. Place the humidifier where you intend
to run it and be sure it is plugged in
and full of water.

2. Press the POWER button once to turn
the humidifier on. The red power light
will illuminate.

The fan will immediately operate on LOW
speed and the SET humidity percentage
will read 65 on the digital display.

NOTE: Humidifier fan should operate at
initial start up. If it does not, refer to the
“Trouble Shooting” section on page 16 of
this manual.

3. Wait a few seconds while the humidifier
takes a ROOM humidity reading.
During this time two bars (- -) will flash
on the display.

4. Once a ROOM reading has registered
proceed to adjust the desired humidity
percentage by pressing the + or ­button. It will change the desired SET
humidity level in increments of 5%.

If the room reading is a flashing 25, the
humidity level is low. A SET point of 30% ­40% is recommended but there may be
conditions that require a different setting.
Depending on your particular environment
it could take 24 hours and in some cases
longer for the humidifier to reach your
desired humidity. It may take several

fillings to bring the ROOM humidity level
up to the SET point. A faster fan speed
will accomplish this quicker. Once estab­lished adjust the fan speed to suit your
needs.

IMPORTANT: Water damage may
result if condensation starts to form
on windows or walls. Humidity SET
point should be lowered until
condensation no longer forms.

5 If the humidifier stops running and the

red REFILL light is not illuminated, the
humidity level is at the normal require­ments for that SET point. The table
below shows recommended indoor
humidity levels as it relates to outdoor
temperatures.

Using Your Humidifier

Operating Tips for Best Performance

1. Position the humidifier next to an

inside wall at least 2 inches from the
wall and away from any heat regis­ters.

2. Do not restrict airflow from entering or

exiting the humidifier.

3. Use EPAapproved bacteriostat

(available at your local retail store) to
retard bacteria growth that may cause
odors and may be harmful to your
health.

4. Regular cleaning as instructed in
“Cleaning Your Humidifier” section of
this manual is recommended.

5. Replace the evaporative wicking filter
at least once per humidification sea­son or more depending on water con­ditions in your area.

6. Ensure humidistat located on power
cord is free from any obstruction and
is away from heating vents or other
sources of heat.

11

-10° F
2° F

10° F

20° F*

-24° C

-18° C

-12° C

-6° C*

20%
25%
30%
35%

When Outdoor Recommended Indoor

Temperature is: Relative Humidity is:

* and above

MA1200 Manual - 71233 7/12/05 2:36 PM Page 11

WARNING: To reduce the risk of
shock or injury from moving parts,
always unplug humidifier before
removing or replacing any parts.

CAUTION: To help retard bacteria
growth and keep maximum efficien­cy, the filter should be replaced at
least once per season, or more often
under hard water conditions. Use
Emerson (MAF-1) recommended
replacement filter.

To replace the filter in your MoistAir
Whole House humidifier, follow the
instructions below.

1. Unplug humidifier.
Before removing the filters, we recom­mend moving the humidifier to an
area where floor coverings are not
susceptible to water damage. (i.e.
kitchen or bath areas.)

2. Remove the water bottle and set aside.
Be sure not to bump or damage the
lower spring valve.

3. Grasp the housing assembly and lift
straight up and away from the base
and set aside. The filter is now acces­sible.

4. Take note of the filter position.
Remove the filter and dispose of prop­erly. You may want to clean the base
at this time. See the "Cleaning Your
Humidifier" section of this manual.

Replacement and Care of Filters

12

Grasp

Housing

Assembly

Securely

and Lift OFF

Filter

Base

MA1200 Manual - 71233 7/12/05 2:36 PM Page 12

5. Install a new filter (MAF-1) into the
base. Coil the filter and position it
between the uprights in the bottom of
the base. The start and finish of the coil
should be captured at the centre of
the base (see diagram) and the filter
should be resting on the floor of
the base.

6. Return the housing assembly to the top
of the base. Return the water bottle to
the right of the housing assembly and
reposition the humidifier to its operating
position.

7. The humidifier is now ready to be filled
for operation.

Replacement and Care of Filters (continued)

13

Base

Position start and
finish of coiled filter
at center of base.

Align housing
assembly
bottom with
top of base
and reposition
securely.

Return bottle
to right side of
humidifier.

Base Uprights

MA1200 Manual - 71233 7/12/05 2:36 PM Page 13

WARNING: To reduce the risk of
injury, fire or damage to humidifier,
use only cleaners specifically rec­ommended for humidifiers. Never
use flammable, combustible or poi­sonous materials to clean your
humidifier. To reduce the risk of
scalds and damage to humidifier,
never put hot water in humidifier.

CAUTION: Local water purity varies
from area to area and under certain
conditions water impurities and air­borne bacteria may promote the
growth of microorganisms in the
reservoir of the humidifier.

To retard bacteria growth that may
cause odors and be harmful to your
health, use only MoistAir replace­ment filters. We also recommend
using EPA approved bacteriostat,
and humidifier cleaner, available at
your local store.

Step 1

To make cleaning easier, the humidifier
base should be empty and completely
dried out. To accomplish this, use the fol­lowing method:

a. Allow the humidifier to run until the

red Refill light illuminates and the
automatic shutoff has stopped the
humidifier fan.

b. Unplug humidifier.

WARNING: If humidifier is not un­plugged, fan could start after housing
is removed.

Step 2

To Remove Parts

1. Remove the water bottle and set
aside. Be sure not to bump or dam­age the lower spring valve.

2. Grasp the housing assembly and lift
straight up and away from the base
and set aside. The filter is now
accessible.

3. Take note of the filter position.
Remove the filter and set aside or
dispose of properly.

NOTE: There may be a little water still in
the base. Carefully dump the water out or
remove with a sponge.

Cleaning Your Humidifier

14

Note: Remove excess
water before cleaning

MA1200 Manual - 71233 7/12/05 2:36 PM Page 14

Step 3

Bi-Weekly Maintenance
Removing Scale

1. Fill the humidifier base with one 8 oz.
cup of undiluted white vinegar. Let
solution stay 20 minutes.

2. Clean all interior surfaces with a soft
brush. Dampen a soft cloth with undi­luted white vinegar and wipe out the
base to remove scale.

3. Rinse thoroughly with clean warm
water to remove scale and cleaning
solution.

Disinfecting Base

1. Pour 1 gallon of water and 1 teaspoon
chlorine bleach into the base. Let
solution stay for 20 minutes, carefully
swishing every few minutes. Wet all
surfaces normally exposed to water.

2. Empty base after 20 minutes. Rinse
with water until bleach smell is gone.
Allow unit to dry out completely.

NOTE: The water bottle should be
cleaned in the same manner as the base.
Rinse thoroughly with clean water after all
steps are complete.

Step 4

Replacing Parts

1. Install a new filter (MAF-1) or the filter
previously set aside if it is in good
condition into the base. Coil the filter
and position it between the uprights in
the bottom of the base. The start and
finish of the coil should be captured in
the center of the base (see diagram)
and the filter should be resting on the
floor of the base.

2. Return the housing assembly to the
top of the base. Return the water bot­tle to the right of the housing assem­bly and reposition the humidifier to its
operating position.

3. The humidifier is now ready to be
filled for operation.

End of Season Maintenance

1. Follow “Bi-Weekly Maintenance”
instructions at end of humidification
season.

2. Remove filter and dispose of properly.

3. Let humidifier dry completely before
storing. Do not store with water inside
base or bottle.

4. Store in cool, dry location.

5. Install a new filter in clean humidifier
before next season begins.

Note: “Bi-Weekly Maintenance” is
also recommended if you do not plan
to run the humidifier for one week or
more.

Cleaning of Humidifier (continued)

15

Position start and
finish of coiled filter
at center of base.

Align housing
assembly
bottom with
top of base
and reposition
securely.

MA1200 Manual - 71233 7/12/05 2:36 PM Page 15

Troubleshooting

Trouble

Red power light and digital
display not illuminated.

Fan not operating (Red power
light and digital display is
illuminated).

Fan running continuously.

Poor evaporation of water.

Bottle empties completely.

Bottle continues to empty
after initial filling.

Bottle not emptying.

Probable Cause

• No Power.

• Power button has not been
depressed.

• ROOM humidity level is 1%
or more above SET humidity
level.

• SET humidity level is 65%.

• ROOM humidity level is 3%
or more below SET humidity
level.

• CHECK FILTER message
flashing.

.

• This is normal for initial filling.

• Air is entering water bottle.

• Spring Valve Assembly
damaged or missing post
in bottom of base.

• Base full of water.

Remedy

• Check 120 volt power source.

• Press power button once to
turn on.

• Raise SET humidity level if
desired.

• A SET humidity percentage
of 65% operates fan
continuously. Adjust SET
level between 30% - 60%.

• Continue to run until desired
humidity level is achieved.
This may take up to 48 hours
initially.

• Change to a fresh new
filter.

• Refill bottle for maximum run
time.

• Ensure fill cap is tightened
securely.

• Ensure gasket on fill cap is
in place.

• Check for leak in water bottle.

• Check orientation of bottle.
Reposition so that spring
valve on bottom of bottle is
depressed by post in bottom
of base.

• The base will hold the con­tents of water bottle (2.0 gal­lons). Continue to run
humidifier to deplete water
from base.

16

CAUTION: Use only liquid EPA Registered Bacteriostat available from local Retail
store.

Use of other water treatment products may damage the filter component.

Under no circumstances should you use water treatment products designed for
Roto belt or Ultrasonic humidifiers.

MA1200 Manual - 71233 7/12/05 2:36 PM Page 16

17

Troubleshooting

Trouble

Display blinks or fan moves
slightly when humidifier is
plugged in.

“CHECK FILTER” message
does not appear even when fil­ter is dirty or humidifier perfor­mance is clearly reduced.

Fan operating slower than
speed registered on digital dis­play.

Humidifier not shutting off dur­ing “DRY OUT MODE”.

Probable Cause

• Normal

• Humidistat on power cord is
being heated.

• Humidifier in “DRY OUT
MODE”.

• Filter not dry.

Remedy

• No action required.

• Move power cord away from
any source of heat or obstruc­tion.

• Humidifier automatically
switches fan speed to “LOW”
when “DRY OUT MODE”
message is displayed.

• During “DRY OUT MODE” the
humidifier will continue to run
on “LOW” speed as required
for up to 2 hours or until the
filter is completely dry.

MA1200 Manual - 71233 7/12/05 2:36 PM Page 17

Repair Parts

Parts List for MoistAir Humidifier

Model No. MA 1200 0

18

MA1200 Manual - 71233 7/12/05 2:36 PM Page 18

Repair Parts

Parts List for MoistAir Humidifier

Model No. MA 1200 0

Always order by part number - Not by key number

* Standard Hardware Item - May be purchased locally
† Stock item - Purchase locally or call 1-800-654-3545 from the USA or

1-866-808-6500 from Canada to order

NOTE: Any attempt to repair the control assembly or motor may create a hazard unless
repair is done by a qualified service technician.

To order parts call: USA 1-800-654-3545 Canada 1-866-808-6500

19

Key No Part No. Description

1 830488 Housing, Upper
2 829806 Assembly, Control
3 829821 Blade, Fan
4 830778 Motor
5 828854 Switch, Micro
6 830489 Housing, Lower
7 MAF-1 † Filter
8 829815 * Screw, Pan Hd. Ty. AB #6 x 1/2 SS

9 830496 Support, Float
10 829816 Float, Reservoir
11 830484 Base
12 829812 Casters (Includes 4)
13 830537

Bottle, Includes Key # 14
14 824690-3 Cap, Fill
15 829805 Screw, Pan Hd. Trx Hi-Lo #6 x 3/4
16 830587 Cap, Screw
17 SP6550 Owner’s Manual (not shown)

MA1200 Manual - 71233 7/12/05 2:36 PM Page 19

© 2004 Emerson
Part No. SP6550 Form No. SP6550 Printed in Canada 11/04

FOR TECHNICAL HELP, CALL

[phone] FROM USA OR [phone] FROM CANADA

(Please have complete model number)

Emerson Tool Company

For more information about MoistAir® humidifiers visit our website at

www.moistair.com

MA1200 Manual - 71233 7/12/05 2:36 PM Page 20