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SERVICE AND MAINTENANCE
Application of these devices is such that the first switch ON
not only turns on first heater element, but also ensures that
indoor fan is energized, because first ON is last OFF. This
ensures fan remains ON until the last heater de-energizes.
CARE AND MAINTENANCE
FEM4, FCM4, FXM4, FVM4, WAP, WAH,
WAX, REM4
To continue high performance, and minimize possible
equipment failure, it is essential periodic maintenance be
performed on this equipment.
The ability to properly perform maintenance on this
equipment requires certain mechanical skills and tools. The
only consumer service recommended or required is filter
maintenance. (See Filter Assembly.)
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Disconnect all power to the unit before servicing the field
wires or removing the control package. The disconnect
(when used) on the access panel does not disconnect
power to the line side of the disconnect, but does allow
safe service to all other parts of the unit.
The minimum maintenance requirements for this equipment
are as follows:
1.
Inspect and clean or replace air filter each month or as
required.
2.
Inspect cooling coil, drain pan, and condensate drain
each cooling season for cleanliness. Clean as
necessary.
3.
Inspect blower motor and wheel for cleanliness each
heating and cooling season. Clean as necessary.
4.
Inspect electrical connections for tightness and
controls for proper operation each heating and cooling
season. Service as necessary.
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use
care and wear appropriate protective clothing and gloves
when handling parts.
FILTER ASSEMBLY
To clean or replace air filter, push plastic connectors toward
center of unit and remove filter access panel outward. Push
filter up and back into unit. Then slide filter out.
Clean filter by using cold water and mild detergent. Rinse and
allow filter to dry. No oiling or coating of filter is required.
New filters are available from your local distributor. Place filter
in slot with cross−mesh binding up or facing cooling coil and
replace filter access panel.
COOLING COIL, DRAIN PAN, AND CONDENSATE DRAIN
The cooling coil is easily cleaned when it is dry. Inspect the
coil and clean (if necessary) before each cooling season. To
check or clean cooling coil, remove coil access panel. If coil
22
is coated with dirt or lint, vacuum it with a soft brush
attachment.
Be careful not to bend coil fins. If coil is coated with oil or
grease, clean it with a mild detergent and water solution.
Rinse coil thoroughly with clear water. Be careful not to
splash water on insulation.
Inspect drain pan and condensate drain at the same time
cooling coil is checked. Clean drain pan and condensate
drain by removing any foreign matter from pan. Flush pan
and drain tube with clear water.
If drain tube is restricted, it can generally be cleared by
high−pressure water. Cut plastic line and work outside
condensate pan and away from coil to clean drain tube.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
Do not use caustic household drain cleaners in the
condensate pan or near the coil. Drain cleaners can
quickly destroy a coil.
BLOWER MOTOR AND WHEEL
Clean blower motor and wheel when cooling coil is cleaned.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Disconnect electrical power before removing any
access panels. Lock out and tag switch with a suitable
warning label.
To clean blower motor or blower wheel:
1.
Remove blower access panel.
2.
Remove motor leads from fan coil control. Note lead
location for ease of reassembly.
3.
Remove the two outside screws holding blower/motor
assembly against blower deck flange and slide
assembly out of cabinet.
4.
(If applicable) Remove screw in strap holding motor
capacitor to blower housing and slide capacitor out
from under strap. Remove screw with green wire from
blower housing. Mark blower wheel, motor, and motor
support
disassembly to ensure proper reassembly. Note
position of blades on wheel.
5.
Loosen setscrew holding blower wheel onto motor
shaft.
6.
Remove the three bolts holding motor mount to blower
housing and slide motor and mount out of housing.
Further disassembly should not be necessary as
adequate clearance is available.
7.
Remove blower wheel from housing by removing cutoff
plate from
orientation and cutoff location for reassembly. The
blower motor and wheel may be cleaned by using a
vacuum with a soft brush attachment.
8.
Remove grease with a mild solvent such as hot water
and detergent. Be careful not to disturb balance
Specifications subject to change without notice.
CAUTION
!
WARNING
!
in
relation
to
blower
blower
housing
outlet.
FAN COILS
housing
before
Note
wheel
496 08 8001 00
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Troubleshooting
