Carrier EEZ 38MVC User manual

38MVC/40MVC
38MVQ/40MVQ
ComforttS e r i e s H i g h --- W a l l D u c t --- F r e e S p l i t S y s t e m
Sizes 009 --- 024
Owner’s Manual
TABLE OF CONTENTS
PAGE
SAFETY PRECAUTIONS 2.....................................................................................
GENERAL 2.................................................................................................
PART NAMES 3..............................................................................................
DISPLAY PANELS 4..........................................................................................
REMOTE CONTROL 5........................................................................................
REMOTE CONTROL FUNCTIONS 6--8..........................................................................
CLEANING, MAINTENANCE AND TROUBLESHOOTING 9 -- 10....................................................
NOTE TO EQUIPMENT OWNER:
Thank you for purchasing a Carrier Air Conditioner. Please read this Owner’s Information Manual
carefully before installing and using this appliance and keep this manual for future reference.
For your convenience, please record the model and serial numbers of your new equipment in the
spaces provided. This information, along with the installation data and dealer contact information,
will be helpful should your system require maintenance or service.
UNIT INFORMATION
Model # ___________________________________
Serial # ___________________________________
INSTALLATION INFORMATION
Date Installed _____________________________
DEALERSHIP CONTACT INFORMATION
Company Name: _________________________________
Address:_________________________________________
________________________________________________
Phone Number:__________________________________
Technician Name:_________________________________
________________________________________________

2
SAFETY PRECAUTIONS
PERSONAL INJURY, DEATH, OR PROPERTY
DAMAGE HAZARD
Failure to follow this warning could result in personal injury,
death, or property damage.
Read and follow all instructions and warnings, including
labels shipped with or attached to unit before operating your
new air conditioner.
!WARNING
Any time you see this symbol in manuals, instructions and on
the unit, be aware of the potential for personal injury. There are
three levels of precaution:
DANGER identifies the most serious hazards which will result in
severe personal injury or death.
WARNING signifies hazards that could result in personal injury or
death.
CAUTION is used to identify unsafe practices which would result
in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in
enhanced installation, reliability, or operation.
PERSONAL INJURY, DEATH AND / OR PROPERTY
DAMAGE HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Improper installation, adjustment, alteration, service,
maintenance, or use cancause explosion,fire, electrical shock,
or other conditions which may cause personal injury or
property damage.
Consult a qualified installer, service agency, your distributor
or branch for information or assistance. The qualified installer
or service agency must use factory--authorized kits or
accessories when modifying this product.
!WARNING
GENERAL
The high wall fan coil unit provides quiet, maximum comfort. In
addition to cooling and/or heating, the high wall fan coil unit
matched with an outdoor condensing unit will filter and
dehumidify the air in the room to provide maximum comfort.
IMPORTANT: The high wall fan coil unit should be installed by
authorized personnel only; using approved tubing and accessories.
If technical assistance, service or repair is needed, contact the
installer or call 1--800--227--7437.
The high wall fan coil unit can be set up and operated from the
remote control (provided). If the remote is misplaced, the system
can be operated from the “Auto” setting on the unit.
Operating Modes:
The high wall fan coil unit has five operating modes.
SFan only
SAuto (heat pump models only)
SHeating (heat pump models only)
SCooling
SDehumidification (DRY)
Fan Only
In Fan Only mode, the system filters and circulates room air
without changing room air temperature.
Auto
In Auto mode, the system will automatically cool or heat the room
according to the user--selected set point.
Heating
In Heating mode, the system heats and filters room air.
Cooling
In Cooling mode, the system cools, dries and filters room air.
Dehumidification (DRY)
In Dehumidification mode, the system dries, filters and slightly
cools room air temperature. This mode does not take the place of
a dehumidifier.
Remote Control
The remote control transmits commands to set up and operate the
system. The control has a window display panel that shows the
current system status. The control can be secured to a surface
when used with the mounting bracket provided.

3
PART NAMES
Air outlet
Air outlet
Air inlet
Air inlet
3
11
12
13
8
7
456
9
21
Front panel frame
Front panel
Air filter
Horizontal air flow grille
Vertical air flow louver
Room temperature sensor
Display panel
Infrared signal receiver
Remote control
Interconnecting tubing
Control and power wiring to indoor unit
Service valves
1
3
4
5
6
7
8
9
11
12
13
2
INDOOR
UNIT
OUTDOOR
UNIT
Remote control bracket
10
10
A07539A
Indoor/Outdoor Unit
1
2
4
5
6
3
8
7
9
10
11
12
13
Carrier
14
MODE
FAN S P E E D
TEMP.
AIR DIR E CTION
SWING
LED
SLEEP
TURB O
CLOCK
TIMER
CANCEL
RESET F/C
AUTO C OOL DR Y HE AT FAN
SET TE MP.
CL OC K
TIM ER ON
TIM ER OFF
SPEED
AUTO L OW MED HIGH
ON
OFF
1
2
4
5
6
3
8
7
9
10
11
12
13
14
MODE BUTTON
ON / OFF BUTTON
FAN SPEED BUTTON
AIR DIRECTION BUTTON
SWING BUTTON
LED BUTTON
RESET BUTTON (Recessed)
F/C BUTTON (Recessed)
TEMP UP / TEMP DOWN BUTTONS
SLEEP BUTTON
CLOCK BUTTON
TIMER BUTTONS
CANCEL BUTTON
TURBO BUTTON
A08042
Remote Control

4
UNIT DISPLAY PANELS
NOTE: The display panel on the indoor unit will look like one of the following. Some of the functions will appear on the display
panel, remote control or both.
On the Unit:
Infrared signal receptor
OPERATION TIMER
PRE-DEF
AUTO
ECON
A07545
9K
TIMER OPERATION
PRE-DEF
Infrared signal recepto
r
A07544
12K
AUTO
AUTO
TIMER
TIMER
PRE.-DEF.
OPERATION
OPERATION
Cooling Only
FAN ONLY
Cooling/ Heating
A07546
18K -- 24K
OPERATION:
This indicator flashes once per second after power is on and
illuminates when the unit is in operation.
TIMER:
This indicator illuminates when TIMER is set ON or OFF.
PRE.--DEF indicator (heat pump units only):
Pre--Def indicator illuminates when the coil is warming up to
prevent cold blow or when unit goes into defrost mode.
AUTO indicator:
When air conditioner is set to AUTO mode, the indicator
illuminates.
FANONLYindicator:
When air conditioner is set to FAN ONLY mode, this indicator
illuminates.
NOTE: All the pictures in this manual are for demonstration
purposes only. The actual shape of your air conditioner may
be slightly different, but the operation instructions are the
same.
Remote Control Display
A UT O C O O L D R Y H E AT F A N
SET TEMP.
CL OC K
TIM ER ON
TIM ER O FF
SP EE D
AUTO LOW MED H IGH
12
4
5
6
3
8
7
9
A08043
1TRANSMISSION INDICATOR: Illuminates when remote
control transmits signals to the indoor unit.
2MODE DISPLAY: Indicates the current operation mode
“AUTO”, “COOL”, “DRY”, “HEAT” (heat pumps only), or
“FAN”.
3ON/OFF INDICATOR: This symbol appears when the unit
is turned on by the remote control, and disappear when the
unit is turned off.
4TEMPERATURE DISPLAY: Temperature setting from
62_F(17_C) to 88_F(30_C) will be displayed. If FAN mode
is selected, there will be no temperature displayed.
5CLOCK DISPLAY: Indicates the current time (0 to 24
hours).
6TIMER DISPLAY: Indicates the set times for the timer
operation (0 to 24 hours).
7LOCK DISPLAY: Displays when settings are locked.
8FAN SPEED DISPLAY: Indicates the set fan speed. AUTO
is displayed when unit is running in AUTO or DRY mode.
9SLEEP DISPLAY: Indicates unit is running in SLEEP mode.
NOTE: Symbols shown in this manual are for the purpose of demonstration. During actual operation, only the relevant symbols are
displayed.

5
REMOTE CONTROL
Carrier
MODE
FAN S P E E D
TEMP.
AIR DIRE CTION
SWING
LED
SLEEP
TURB O
CLOCK
TIMER
CANCEL
RE SE T F/C
AUT O C OOL DR Y HE AT FAN
SE T TE MP.
CL OC K
TIM ER ON
TIM ER OF F
SPE ED
AUTO L OW MED HIGH
ON
OFF
A08032
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
Handle the control with care and avoid getting the control
wet.
CAUTION
!
IMPORTANT: The remote control can operate the unit from a
distance of up to 25 ft. (7.6 m) as long as there are no obstructions.
This is one way communication only (from remote control to fan
coil).
When the timer function is used, the remote control should be kept
in the vicinity of the fan coil (within 25 ft / 7.6 m)
The remote control can perform the following basic functions:
STurn the system ON and OFF
SSelect operating mode
SAdjust room air temperature set point and fan speed
SAdjust airflow direction
Refer to the Remote Control Function section for detailed
description of all the capabilities of the remote control.
Battery Installation
Two AAA 1.5 v alkaline batteries (included) are required for
operation of the remote control.
To install or replace batteries:
1. Slide the back cover off the control to open the battery com-
partment.
2. Insert batteries. Follow the polarity markings inside the
battery compartment.
3. Replace battery compartment cover.
NOTE:
1. When replacing batteries, do not use old batteries or a different
type battery. This may cause the remote control to malfunction.
2. If the remote is not going to be used for several weeks, remove
the batteries. Otherwise battery leakage may damage the remote
control.
3. The average battery life under normal use is about 6 months.
4. Replace the batteries when there is no audible beep from the
indoor unit or if the Transmission Indicator fails to light.
Set the Clock
Before you start operating the air conditioner, set the clock of the
remote control as outlined below. The clock panel on the remote
controller will display the time regardless of whether the air
conditioner is in use or not.
Initial Setting of the Clock:
After batteries are inserted in the remote control, the clock panel
will display ”12:00” and begin to flash.
1. TEMP Button
SPress these buttons to set the time:
YForward
BBackward
SEach time you press the button, the time moves forward
or backward by one minute depending on which button
you press.
SIf you push the temperature button continuously, the
time adjusts in increments of 10 minutes.
2. CLOCK Button
When the right time is achieved, press the CLOCK button
or release Yor the Bbutton and wait for 3 seconds, the
clock time stops flashing and the clock starts operating.
3. Readjusting the Clock
Press the CLOCK button on the remote control for about
3 seconds, the time of the clock display will start to flash.
To set the new time, follow 1 and 2 of ”Initial Setting of
the Clock”.
NOTE: Note: The time of the CLOCK must be set before the
AUTO--TIMER function will operate.
Clock accuracy is within 15 seconds per day.
UNIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Static electricity or other factors (voltage fluctuations) can
cause the remote control clock to reset. If your remote
control is reset (the time of ”12:00” flashing), set the clock
before starting the unit.
CAUTION
!

6
Remote Control Operation -- Quick Start
NOTE: When transmitting a command from the remote control to
the unit, be sure to point the control toward the right side of the
unit. the unit will confirm receipt of a command by sounding an
audible beep.
1. Turn the unit on by pushing the ON/OFF button.
2. If there is a preference for temperature settings to be dis-
played in _F rather than _C (default), push the recessed F/C
button once using a paper clip or similar object.
3. Select the desired mode by pushing the mode button.
AUTO COOL DRY
HEAT
FAN
NOTE: Cool only units have no heat mode.
4. Select the temperature set point by pointing the control to-
ward the unit and pressing the increase/decrease temperature
set point buttons until the desired temperature appears on
screen.
5. Select the desired fan speed by pressing the FAN SPEED
button to select desired fan speed.
NOTE: If unit is operating in Dry mode, AUTO fan speed will be
displayed.
6. Set the airflow direction. When the unit is turned on, the
louvers default to the cooling or heating position. The user
can adjust louver position by pushing the air direction but-
ton or have continuous louver movement by pushing the
swing button.
Emergency Operation
If the remote control is lost, damaged, or the batteries are
exhausted, the MANUAL button can be used to run the unit.
Open the front cover panel and press the MANUAL button once
briefly when the system is off.
To stop emergency operation, push the MANUAL button twice or
operate the remote control. If the MANUAL button is only
pushed once, the system will enter TEST mode and run for 30
minutes.
Manual button
A07364
The set conditions of emergency operation are as follows:
SPreset set point: 76_F(24_C)
SFan speed: AUTO
SDischarge air direction: Pre--set position based on operation in
“Cool”or “Heat” mode.
REMOTE CONTROL FUNCTIONS
Pressing the On/Off Button
SET TEMP.
C L O C K
SPEED
AUTO
AUTO
ON/OFF
INDICATOR
A08034
When the air conditioner is not in operation, the remote control
will display the last set point, mode and time.
SPress the On/Off button to start the unit.
-- The unit will start in the last operating mode and set
point. The ON/OFF indicator will appear.
SPress button On/Off to stop the unit.
-- All indicator lights on the unit will go out, and the remote
control will display the set point, mode and time.
NOTE: If the On/Off button is pressed too soon after a stop, the
compressor will not start for 3 minutes due to the inherent
protection against frequent compressor cycling. The unit will only
emit an audible beep when the signals are received correctly.
Selecting an Operating Mode
Use the Operating Mode button to select one of the available
modes.
SET TEMP.
C L O C K
SPEED
AUTO
OPERATING MODE
AUTO COOL DRY HEAT FAN
AUTO COOL DRY
HEAT
FAN
A08034 / A07548
Setting the Room Temperature Set Point
Pressing the increase temperature set point and decrease
buttons will raise or lower the temperature.
The unit will confirm signal receipt with a beep and the value of
the set temperature on the display will change accordingly.
The temperature can be set between 62_F(17_C) and 88_F
(31_C).
NOTE: In Cooling mode, if the temperate selected is higher than
the room temperature, the unit will not start. The same applies for
the Heating mode if the selected temperature is lower than the
room temperature.

7
Selecting the Fan Speed
SET TEMP.
C L O C K
SPEED
AUTO
AUTO LOW MED HIGH
A08036
The fan speed can be selected by pressing the FAN SPEED button.
NOTE: When the unit is on, the fan will run continuously in
cooling or heating. When in heating, there might be situations
where the fan will slow down or shut off to prevent cold blow.
Selecting the Horizontal Direction Louver Position
In order to optimize comfort, the horizontal louver will operate in
a preset range as shown in the figure below.
COOLING
HEATING
A08044
The horizontal louvers can be adjusted using the remote control
and can be set to be stationary or moving continuously.
Air Direction
Press the AIR DIRECTION button repeatedly to choose one of the
louver positions.
Every time the air direction button is pushed, the louver will swing
by 6 degrees.
In the Cooling, Dehumidification, and Fan Only mode, the louver
will swing in the cooling range. In the Heating mode, the louver
will swing in the heating range.
NOTE: Always use the remote control to adjust the louver
position, otherwise abnormal operation may occur. If the louver is
manually adjusted out of its range, turn the unit off and then on
again.
Auto Swing
To have the louver moving continuously, push the SWING button.
Push again to stop the louver.
Selecting Vertical Direction of the Louver
The vertical louvers can be adjusted manually to direct the airflow
to achieve the optimal comfort in the space.
A07543
Timer Function
TIMER ON (to start the unit) and TIMER OFF (to stop the unit)
can be used separately or together.
Timer ON only
SET TEMP.
C L O C K
SPEED
AUTO
AUTO
TIMER ON
A08037
This function will allow the unit to start automatically at the set
time. The TIMER ON can be set while the unit is on or off.
UNIT ON
-- Press the TIMER button once. The current time flashes next
to the TIMER ON display on screen. Press the temp Ybutton
or temp Bbutton to set the desired “TIME ON”. Every time
the Yor Bbutton is pushed, the time increases or decreases
by 10 minutes.
-- When the TIMER ON is set, the TIMER light on unit
illuminates. The unit will shut off and will start again at the
set time.
UNIT OFF
-- Set the timer described in the UNIT ON section.
-- Theunitwillstartatthesettime.
To cancel TIMER setting, press the CANCEL button.
Timer OFF only
SET TEMP.
C L O C K
SPEED
AUTO
AUTO
TIMER OFF
A08040
This function will allow the unit to stop automatically at the set
time. The timer can be set while the unit is on or while it is off.
UNIT ON
-- Press the TIMER button twice. The current time flashes next
to the TIMER OFF display on screen. Press the temp Y
button or temp Bbutton to set the desired “TIME OFF”.
Every time the Yor Bbutton is pushed, the time increases
or decreases by 10 minutes.
-- When the TIMER OFF is set, the timer light on the unit
illuminates and the unit turns off automatically at the set
time.
UNIT OFF
-- Set the TIMER off as described in the UNIT ON section.
-- The unit will turn on and will turn off at the set time.
-- If TIMER OFF is canceled (by pushing the cancel button),
before the set time elapses, the unit will continue running.

8
Timer ON and Timer OFF
SET TEMP.
C L O C K
SPEED
AUTO
AUTO
TIMER OFF
TIMER ON
A08041
Use both functions to program the unit to turn on and shut off at
specified times.
UNIT OFF
-- Set TIMER ON as previously described.
-- Set TIMER OFF as previously described.
-- The unit will start automatically at the set TIME ON and will
turn off at the set TIME OFF.
UNIT ON
-- Set TIME OFF as previously described.
-- Set TIME ON as previously described.
-- The unit will turn off automatically at the set TIME OFF
and will turn on at the set TIME ON.
Sleep Mode
This mode is used to conserve energy and can be used when the
unit is in the COOL, HEAT or AUTO mode only.
Cool Mode
-- Push the SLEEP button. The SLEEP display will appear on
the remote control.
SET TEMP.
C L O C K
SPEED
AUTO
COOL
A08038
-- After 1 hour the set point will be raised by 1.8_F(1_C).
-- After another hour, the set point will be raised by another
1.8_F(1_C)andthefanwillruninlowspeed.
-- The unit will shut off 7 hours after setting the SLEEP mode.
-- The SLEEP mode will be cancelled if any button on the
remote control is pressed.
Heat Mode
-- Same as cooling mode but set points will be lowered by
1.8_F(1_C).
Turbo Mode
This function is available in COOL mode on 9k and 12k cooling
only units. Use the TURBO mode to cool the room rapidly.
-- Press the TURBO button. An audible “beep” will be heard.
-- Thefanwillrunonhighspeed.
-- The TURBO mode terminates automatically after 20 minutes
from pushing the Turbo mode button once. It can be
terminated immediately by pushing the Turbo mode again.
When the Turbo mode is terminated, the unit will go back to
the original setting.
Lock
Use this function to lock the settings on the remote control and to
prevent the settings being changed.
SET TEMP.
C L O C K
SPEED
AUTO
COOL
LOCK SYMBOL
A08039
To lock and unlock the remote control, press the Yand Btemp
buttons simultaneously for about 3 seconds.
Resetting the Remote Control
If the remote control is not functioning properly, it can be reset by
pressing the reset button with a paper clip or tip of a pen. Current
settings will be cancelled and the control will return to the initial
settings and will be in standby mode. Push the ON/OFF button
to activate it.
Time Delay
If the On/Off button is pressed too soon after a stop, the
compressor will not start for 3 minutes due to the inherent
protection against frequent compressor cycling. The unit will only
emit an audible beep when the signals are received correctly.
Heating Features
If the unit is in the heating mode, there will be a delay when the
fan starts. The fan will start only after the coil is warmed up to
prevent cold blow.
Defrost Operation
In heating mode, if the outdoor coil is frosted, the indoor fan and
outdoor fan will turn off while system removes the frost on the
outdoor coil.
The system will automatically revert to normal operation when
frost is removed from the outdoor unit.
Auto Start
If the power fails while the unit is operating, the unit stores the
operating condition, and it will start operation automatically under
those conditions when the power is restored.

9
CLEANING, MAINTENANCE AND TROUBLESHOOTING
ELECTRICAL SHOCK HAZARD
Failure to follow this caution may result in personal injury
or death.
Always turn off power to the system before performing any
cleaning or maintenance to the system. Turn off the outdoor
disconnect switch located near outdoor unit. Be sure to
disconnect indoor unit if on a separate switch
CAUTION
!
EQUIPMENT DAMAGE/OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper unit operation.
Operating the system with dirty air filters may damage the
indoor unit and could cause reduced cooling performance,
intermittent system operation, frost build--up on indoor coil
or blown fuses.
CAUTION
!
Periodic Maintenance
Periodic maintenance is recommended to ensure proper operation
of the unit. Recommended maintenance intervals may vary
depending on the installation environment, e.g., dusty zones, etc.
Refer to Table 1.
CUT HAZARD
Failure to follow this caution may result in personal injury.
The coil fins are very sharp. Use caution when cleaning.
Always wear safety protection.
CAUTION
!
Cleaning the Coil
Clean the coil at the beginning of each cooling season, or when
necessary. Use a vacuum cleaner or a long--bristle brush to avoid
damage to the coil fins.
Air Filters
Remove and clean the air filters once a month.
NOTE: If air filters show signs of excessive wear or are torn, they
must be replaced. Contact your local dealer for replacement filters.
1. Open front panel on unit.
2. Pull filters down to remove.
3. Vacuum filters.
4. Clean with warm water.
5. Shake filter to remove excess water and dry thoroughly.
6. Replace filter by sliding into rack until filter snaps in place.
7. Close front panel on unit.
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
When cleaning the front panel, do not use water hotter than
105_F (40.56_C) and do not pour water onto the fan coil.
Do not use abrasive or petroleum based cleaners as they
may damage the front panel.
CAUTION
!
Indoor Unit Front Panel
To clean the front panel on the indoor unit, wipe the outside with
a soft, dry cloth. If necessary, a mild liquid detergent can be applied
and wiped off with a dry cloth.
Preparing for Extended Shutdown Period
Clean the filters and reposition them in the unit. Operate the unit
in Fan only mode for 12 hours to dry all internal parts.
Turn main power supply off and remove batteries from the remote
control.
System Operation Recommendations
The items outlined in the following list will help to assure proper
system operation:
SReplace both remote control batteries at the same time.
SPoint the remote control toward the unit display panel when
transmitting a command.
SKeep doors and windows closed while unit is operating.
SContact an authorized service representative if a problem arises
that cannot be easily resolved.
SDo not perform cleaning or maintenance activities while unit
is on.
SKeep display panel on unit away from direct sunlight and heat
as this may interfere with remote control transmissions.
SDo not block air intakes and outlets on the indoor or outdoor
units.
Energy Saving Recommendations
The following recommendations will add greater efficiency to the
ductfree system:
SSelect a comfortable thermostat setting and leave it at chosen
setting. Avoid continually raising and lowering the setting.
SKeep unit filter clean. Frequent cleaning may be necessary de-
pending on indoor air quality.
SUse drapes, curtains or shades to keep direct sunlight from
heating room on very hot days.
SDo not obstruct air intake on front panel.
STurn on air conditioning before indoor air becomes too un-
comfortable.
Troubleshooting
Refer to Table 2 before contacting your local dealer.

10
Table 3—Periodic Maintenance
INDOOR UNIT EVERY MONTH EVERY 6 MONTHS EVERY YEAR
Clean Air Filter*
Change Remote Control Batteries
S
S
S
OUTDOOR UNIT EVERY MONTH EVERY 6 MONTHS EVERY YEAR
Clean Outdoor Coil from Outside
Clean Outdoor Coil from Inside†
BlowAirOverElectricParts†
Check Electric Connection Tightening†
Clean Fan Wheel†
Check Fan Tightening†
Clean Drain Pans†
S
S
S
S
S
S
S
* Increase frequency in dusty zones.
{Maintenance to be carried out by qualified service personnel. Refer to the Installation Manual
Table 4—Troubleshooting
PROBLEM POSSIBLE CAUSE SOLUTION
Unit/System Does Not Work •The circuit breaker has tripped or a fuse
has blown.
•Power failure.
•Diagnostic lights illuminate.*
•Voltage is too low.
•Reset the circuit breaker or replace the fuse with
the specified replacement fuse.
•Restart operation when the power is restored.
•Call your service representative.
•Call your service representative.
Cooling is Not Working
Properly
•The filter is blocked with dust.
•Temperature is not set properly.
•A window or door is open.
•The outdoor unit is obstructed.
•The fan speed is too low.
•The operation mode is in Fan instead of
Cool.
•Clean the air filter.
•Check the temperature and reset if necessary.
•Close the window or door.
•Remove the obstruction.
•Change the fan speed selection.
•Change the operating mode to Cool or reset the
unit.
Heating is Not Working
Properly
•The filter is blocked with dust.
•Temperature is set too low.
•A window or door is open.
•The outdoor unit is obstructed.
•Clean the air filter.
•Check the temperature and reset if necessary.
•Close the window or door.
•Remove the obstruction.
Unit Stops During Operation •The Off timer is not operating correctly.
•Diagnostic lights illuminate.*
•Restart the operating mode.
•Call your service representative.
* Diagnostic lights are a combination of lights that will illuminate in the display area on the unit. They are a combination of the lights you see during normal
operation.
HEATING & COOLING
Copyright 2008 Carrier Corporation Printed in the U.S.A. Edition Date: 02/08 Catalog No: OM38---40MV ---02
R e p l a c e s : O M 3 8 --- 4 0 M V --- 0 1
Manufacturer reserves the right to change, at any time, specifications and design without notice and without obligation.