Contents

Carrier 40MHH Owner's Manual PDF

1 of 18
1 of 18

Summary of Content for Carrier 40MHH Owner's Manual PDF

Specifications subject to change without notice.

TABLE OF CONTENTS

PAGE A NOTE ABOUT SAFETY ........................................................................................................................2 GENERAL...................................................................................................................................................2 PARTS LIST................................................................................................................................................3 REMOTE CONTROLS...............................................................................................................................4 FUNCTION BUTTONS (HEAT PUMP ONLY) .......................................................................................5 FUNCTION BUTTONS (COOLING ONLY) ............................................................................................7 REMOTE CONTROL .................................................................................................................................9 SETTING THE TIMER.............................................................................................................................11 CLEANING, MAINTENANCE AND TROUBLESHOOTING ..............................................................15 TROUBLESHOOTING.............................................................................................................................17

NOTE TO EQUIPMENT OWNER:

Please read this Owners 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:______________________

Owners Manual

40MHH High Wall Ductless System Sizes 09 to 24

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

2

A NOTE ABOUT SAFETY

Any time you see this symbol in manuals, instructions and on the unit, be aware of the potential for personal injury. There are 3 levels of precaution:

1. DANGER identifies the most serious hazards which will result in severe personal injury or death.

2. WARNING signifies hazards that could result in personal injury or death.

3. CAUTION is used to identify unsafe practices which could 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.

GENERAL The ducted fan coil unit provides quiet, maximum comfort. In addition to cooling and/or heating, the ducted fan coil unit matched with an outdoor condensing unit filters and dehumidifies the air in the room to provide maximum comfort.

IMPORTANT: The ducted 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. The ducted 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 ducted fan coil unit has five operating modes:

FAN Only

AUTO

HEATING (heat pumps only)

COOLING

DEHUMIDIFICATION (DRY)

FAN Only In the FAN Only mode, the system filters and circulates the room air without changing room air temperature.

AUTO In the AUTO mode, the system automatically cools or heats the room according to the user-selected set point.

NOTE: AUTO mode is recommended for use on single zone applications ONLY. Using AUTO CHANGEOVER on multi-zone applications could set an indoor unit to STANDBY mode, indicated with two dashes (--) on the display, which will turn off the indoor unit until all the indoor units are in the same mode (COOLING or HEATING). HEATING is the system's priority mode. Simultaneous HEATING and COOLING is not allowed.

HEATING In the HEATING mode, the system heats and filters the room air.

COOLING In the COOLING mode, the system cools, dries and filters the room air.

DEHUMIDIFICATION (DRY) In DEHUMIDIFICATION mode, the system dries, filters and slightly cools the room air temperature. This mode prioritizes air dehumidification but it does not take the place of a dehumidifier.

Wireless Remote Control The remote control transmits commands to set up and operate the system. The control has a window display panel that displays the current system status. The control can be secured to a surface when used with the mounting bracket provided.

Wired Remote Control (Optional) Refer to the Wired Controller manual.

24V Interface (Optional) Allows the control of the Ductless System with a third party thermostat.

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 can cause explosion, fire, electrical shock, or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or service agency must use factoryauthorized kits or accessories when modifying this product. Read and follow all instructions and warnings, including labels shipped with or attached to unit before operating your new air conditioner.

WARNING

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

3

PARTS LIST

Fig. 1 Indoor Unit

INDOOR UNIT DISPLAY INDICATOR

Fig. 2 Display Panel

Remote Control

Remote Holder

Louver

Front Panel

Air Filter (pull out)

Display window

for 3 seconds when: TIMER ON is set SWING, TURBO, or SILENCE features are turned on

for 3 seconds when: TIMER OFF is set

when defrosting (Heat Pump units)

when anti-cold air feature is turned on (Heat Pump units)

when unit is self-cleaning

when freeze protection is turned on

In FAN mode, the unit displays the room temperature. The unit displays the set point temperature.

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

4

REMOTE CONTROLS

Fig. 3 RG10B(B1)/BGEFU1 (Heat Pump) Fig. 4 RG10A5(B1)/BGCEFU1 (Cooling Only)

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

5

FUNCTION BUTTONS (HEAT PUMP ONLY)

Before using the new air conditioner, familiarize yourself with the remote control. The following is a brief introduction to the remote control.

Fig. 5 Remote Controller

NOTE: New remote controller starting production of week 05 year 2021 (serial number 0521V10001). Press the buttons at the same time for 3 seconds to alternate the temperature display between the F and C scale. For advanced functions, refer to the RG10B(B1)/BGEFU1 wireless remote controllers service manual.

ON/OFF Turns the unit on or off.

MODE

OK

TIMER

SHORTCUT

CLEAN

LED

Turbo

SLEEP

Scroll through operation modes as follows: AUTO COOL DRY HEAT FAN

FAN SPEED

SWING

TEMP

Use to confirm the selected functions

Decreases temperature O Oin 1 F(1 C) increments.

Min. temperature is O O62 F(17 C).

Increases temperature O Oin 1 F(1 C) increments.

Max. temperature is O O86 F(30 C).

Set timer to turn unit on or off.

Saves energy during sleeping hours.

Selects fan speeds in the following order: AUTO LOW MED HIGH

NOTE: Hold this button down for 2 seconds to activate the Silence feature.

Enables unit to reach preset temperature in shortest possible time

Use to restore the current settings or resume previous settings.

Starts and stops the horizontal louver movement. Hold down for 2 seconds to initiate vertical louver auto swing feature.

TEMP

SET Scroll through operation functions as follows: Fresh( ) Follow Me( )

AP mode( ) Fresh .... The selected symbol flashes on the display area, press OK to confirm.

Use to start/stop the Clean function.

Turns indoor units LED display and air conditioner buzzer on and off (model dependent), which create a comfortable and quiet environment.

Turbo

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

6

Remote LCD Screen Indicators

Fig. 6 Unit Display

Transmission Indicator

MODE display

TIMER ON display

FAN SPEED display

TIMER OFF display

Silence feature display

ECO display

GEAR display

LOCK display

Temperature/Timer/Fan speed display

Sleep mode display

Follow me feature display

Wireless control feature display

Low battery detection display(If flashes)

Displays when LOCK feature is activated.

LOW

MED

HIGH

AUTO

Lights up when remote sends signal to indoor unit

Displays selected fan speed:

Displays the current including:

mode,

This fan speed can not be adjusted in AUTO or DRY mode.

Not available for this unit

Not available for this unit

Displays the set temperature by default, or fan speed or timer setting when using TIMER ON/OFF functions.

Temperature range:

Timer setting range: 0-24 hours

This display is blank when operating in FAN mode.

Fresh feature display(some units) (No displays when Fresh feature is activated)

62-86F/17-30C (20-28C) (Model dependent)

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

7

FUNCTION BUTTONS (COOLING ONLY)

Before using the new air conditioner, familiarize yourself with the remote control. The following is a brief introduction to the remote control.

Fig. 7 Remote Controller

NOTE: For models of RG10A4(B1)/BGEFU1, RG10A5(B1)/BGEFU1 and RG10A5(B1)/BGCEFU1, press together and hold the buttons at the same time for 3 seconds to alternate the temperature display between the C and F scales. The FRESH feature is not available for models of RG10A4(B)/BGEF and RG10A4(B1)/BGEFU1.

ON/OFF

SET

Turns the unit on or off. MODE

OK

TIMER

CLEAN

LED

Boost

ECO

Scroll through the operation modes as follows: COOL DRY FAN

FAN SPEED

SWING

TEMP

TEMP

Use to confirm the selected functions.

Starts and stops the horizontal louver movement. Hold down for 2 seconds to initiate the vertical louver auto swing feature (some units).

Set the timer to turn the unit on or off.

Press to enter the energy efficient mode.

Sleep( )

Fresh... Follow Me( ) AP mode( )

Enables unit to reach the preset temperature in the shortest possible time.

Selects fan speeds in the following order: AUTO LOW MED HIGH NOTE: Hold this button down for 2 seconds to activate the SILENCE feature.

SHORTCUT Use to restore the current settings or resume previous settings.

Increases temperature O Oin 1 F(1 C) increments.

Max. temperature is O O86 F(30 C)

Decreases temperature O Oin 1 F(1 C) increments.

Min. temperature is O O62 C(17 F).

Scroll through operation functions as follows: Fresh( )

The selected symbol flashes on the display area. Press OK to confirm.

Use to start/stop the Clean function.

Turns the indoor units LED display and air conditioner buzzer on and off (model dependent), which creates a comfortable and quiet environment.

Boost

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

8

Remote LCD Screen Indicators

Fig. 8 Unit Display

Transmission Indicator

MODE display

TIMER ON display

FAN SPEED display

TIMER OFF display

Silence feature display

ECO display

GEAR display

LOCK display

Temperature/Timer/Fan speed display

Sleep mode display

Follow me feature display

Wireless control feature display

Low battery detection display (if flashes)

Displays when LOCK is activated.

Lights up when the remote sends the signal to the indoor unit. Displays the current

including: mode,

Displays when the ECO feature is activated

Displays when the GEAR feature is activated.

Displays the set temperature by default, or fan speed or timer setting when using the TIMER ON/OFF functions.

Temperature range: 62-86F/17-30C

Timer setting range: 0-24 hours

This display is blank when operating in FAN mode

(20-28C) (Model dependent)

LOW

MED

HIGH

AUTO

Displays selected fan speed:

This fan speed cannot be adjusted in the AUTO or DRY modes.

Fresh feature display (some units) (Does not display when FRESH is activated)

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

9

REMOTE CONTROL

IMPORTANT: The wireless remote control can operate the unit from a distance of up to 26 ft. (8 m) as long as there are no obstructions.

When the timer function is used, the remote control should be kept in the vicinity of the unit (within 26 ft. (8 m)).

The remote control can perform the following basic functions:

Turn the system ON and OFF

Select the operating mode

Adjust room air temperature set point and fan speed

Adjust the airflow direction.

Refer to FUNCTION BUTTONS (HEAT PUMP ONLY) on page 5 for a detailed description of all the capabilities of the remote control.

Battery Installation

Two AAA 1.5v alkaline batteries (included) are required to operate the remote control.

To install or replace batteries:

1. Slide the back cover off the control to open the battery compartment.

2. Insert the batteries. Follow the polarity markings inside the battery compartment.

3. Replace the battery compartment cover.

NOTES:

1. When replacing batteries, do not use old batteries or a different type of 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.

5. When batteries are removed, the remote control erases all programmed settings. The control must be reprogrammed after the insertion of new batteries.

Remote Control Operation - Quick Start

Before operation, ensure the unit is plugged in and the power is available.

AUTO Mode (Heat Pump Model Only)

In AUTO mode, the unit automatically selects the COOL, FAN, or HEAT operation based on the set temperature.

Fig. 9 AUTO Mode

1. Press MODE to select AUTO. 2. Set your desired temperature using TEMP or TEMP 3. Press ON/OFF to start the unit.

NOTE: Fan speed can not be set in the AUTO mode.

COOL Mode

Fig. 10 COOL Mode

1. Press MODE to select the COOL mode. 2. Set your desired temperature using TEMP or TEMP 3. Press FAN to select the fan speed in a range of AU100%, 4. Press ON/OFF to start the unit.

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

1

3

2

Turbo

1

3

2

4

Turbo

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

10

HEAT Mode (Heat Pump Model Only)

Fig. 11 HEAT Mode

1. Press MODE to select the HEAT mode. 2. Set your desired temperature using TEMP or TEMP 3. Press FAN to select the fan speed in the range of AU-100%.

NOTE: As the outdoor temperature drops, the performance of your units HEAT function may be affected. In such instances, we recommend using this air conditioner in conjunction with other heating.

DRY Mode

Fig. 12 DRY Mode

1. Press MODE to select the DRY mode. 2. Set your desired temperature using TEMP or TEMP 3. Press ON/OFF to start the unit.

FAN Mode

Fig. 13 FAN Mode

1. Press MODE to select the FAN mode. 2. Press FAN to select the fan speed in the range of AU-100%. 3. Press ON/OFF to start the unit

1

3

2

4

Turbo

1

3

2

Turbo

1

3

2 Turbo

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

11

SETTING THE TIMER

TIMER ON/OFF

TIMER ON

Fig. 14 Setting the TIMER ON Setting

NOTE:

1. When setting the TIMER ON or TIMER OFF, the time increases by 30 minutes increments with each press, up to 10 hours. After 10 hours and up to 24, it increases in 1 hour increments. (For example, press 5 times to get 2.5h, and press 10 times to get 5h,) The timer reverts to 0.0 after 24.

2. Cancel either function by setting its timer to 0.0h.

TIMER ON and OFF

Fig. 15 Timer ON and OFF

TIMER OFF setting

Press TIMER to initiate the ON time sequence.

Press Temp. UP or DOWN multiple times to set the desired time to turn on the unit.

Press Temp. up or down multiple times to set the desired time to turn off the unit.

Point remote towards the unit and wait 1 second. TIMER ON activates.

Press TIMER to initiate the OFF time sequence.

Point remote towards the unit and wait 1second. TIMER OFF activates.

ON/OFF

M OD E

FAN

SHOR TCUT TIMER ON

TIMER OFF

TEM P SLEEP

1sec

ON/OFF

M OD E

FAN

SHOR TCUT TIMER ON

TIMER OFF

TEM P SLEEP

1sec

x5

x10

TIMER

TIMER

TIMER ON & OFF setting

Current time 1PM

2:00PM 3:00PM 4PM 5PM 6PM

Timer starts Unit turns

ON Unit turns

OFF

2.5 hours later 5 hours later

3:30PM

Example: If the current timer is 1:00PM, to set the timer as above shown above, the unit will turn on 2.5h later (3:30PM) and then turn off at 6:00PM.

ON/OFF

M OD E

FAN

SHOR TCUT TIMER ON

TIMER OFF

TEM P SLEEP

ON/OFF

M OD E

FAN

SHOR TCUT TIMER ON

TIMER OFF

TEM P SLEEP

xn

Keep in mind that the time periods you set for both functions refer to hours after the current time.

TIMER TIMER

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

12

How to Use Advanced Functions

Swing Function

Shortcut Function

Press Swing

Press Shortcut

The horizontal louver swings up and down automatically when pressing Swing. Press Swing again to make it stop.

Keep pressing Swing more than 2 seconds, the vertical louver swing function activates. (model dependent)

2s

Swing

Turbo Function

Press Turbo

Turbo

Swing

Swing

Push Shortcut when the remote control is on, the system automatically reverts back to the previous settings including the operating mode, setting temperature, fan speed level and sleep feature (if activated). If pushing more than 2 seconds, the system automatically restores the current operation settings including operating mode, setting temperature, fan speed level and sleep feature (if activated).

Select Turbo in the COOL mode and the unit blows cool air with the strongest wind setting to jump-start the cooling process. Select the Turbo feature in the HEAT mode, for units with Electric Heat elements, the Electric Heater activates and jump-starts the heating process.

Clean Function

Press Clean

Airborne bacteria can grow in the moisture that condenses around the heat exchanger in the unit. With regular use, most of this moisture is evaporated from the unit. By pressing Clean, the unit cleans itself automatically. After cleaning, the unit turns off automatically. Press Clean in mid-cycle to cancel the operation and turn off the unit. Use Clean as often as you like. Note: You can only activate this function in the COOL or DRY mode.

Clean

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

13

LED Display

FP Function

LOCK Function

LED DISPLAY

2s

Keep pressing LED more than 5 seconds, the indoor unit displays the actual room temperature. Press more than 5 seconds again to revert back which displays the setting temperature.

Press LED to turn on and turn off the display on the indoor unit.

5s

Press LED Press LED more than 5 seconds (some units)

Keep pressing Fan for more than 2 seconds to activate/disable the Silence function (some units). Due to the low frequency operation of the compressor, it may result in insufficient cooling and heating capacity. Press ON/OFF, Mode, Sleep, Turbo or Clean while operating to cancel the Silence function.

SILENCE Function

LED LED

Clean

5s5s

Turbo

Press 2 times during one second under the HEAT Mode and setting temperature of 62F/17C or 20C (for model of RG10B10(B)/BGEF).

The unit operates at a high fan speed (while the compressor is on) with the temperature automatically set to 46C/8F.

Press this button 2 times during one second under the HEAT Mode and setting temperature of 62F/17C or 20C (for model RG10B10(B)/BGEF) to activate the FP function. Press On/Off, Sleep, Mode, Fan and Temperature while operating, cancels this function.

Note: This function is for the heat pump air conditioner only.

2

+ Press Clean and Turbo at the same time more than 5 seconds to activate Lock function. All buttons will not respond except when pressing these two buttons for two seconds again to disable locking.

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

14

Sleep Function

or

FRESH Function( ) (some units) :

AP Mode ( ) (some units) :

Follow me function ( ) :

SET Function

SET SET OK

Press SET to enter the function setting, then press SET or TEMP or TEMP to select the desired function. The selected symbol flashes on the display area, press OK to confirm.

To cancel the selected function, just perform the same procedures as above.

Press SET to scroll through operation functions as follows: Fresh ( ) Follow Me( ) AP mode( ) [ ]: If your remote controller has the Fresh function, you can not use the SET button to select the Fresh function.

The FOLLOW ME function enables the remote control to measure the temperature at its current location and sends this signal to the air conditioner under a every 3 minutes interval. When using AUTO, COOL or HEAT modes, measuring ambient temperature from the remote control (instead of from the indoor unit itself) allows the air conditioner to optimize the temperature around you and ensure maximum comfort.

The SLEEP function is used to decrease energy while occupants sleep (and do not require the same temperature settings for comfort). This function can only by activated via the remote control.

Note:

The SLEEP function is not available in FAN or DRY mode.

When the FRESH function is initiated, the Ionizer/Plasma Dust Collector (depending on models) is energized and helps to remove pollen and impurities from the air.

If the memory feature is stopped, OF displays for 3 seconds on the screen.

While the memory feature is activated, press ON/OFF, shift the mode or power failure will not cancel the FOLLOW ME function.

NOTE: Press and hold Turbo for seven seconds to start/stop the Memory feature of the FOLLOW ME function

If the memory feature is activated, ON displays for 3 seconds on the screen.

SLEEP Function

Press SLEEP

Choose AP mode to perform wireless network configuration. For some units, it does not work by pressing the SET button. To enter the AP mode, continuously press the LED seven times in 10 seconds.

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

15

CLEANING, MAINTENANCE AND TROUBLESHOOTING

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 2 on page 17.

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.

Cleaning the Air Filters

Remove and clean the air filters once a month. A clogged air conditioner can reduce the cooling efficiency of your unit, and can also be bad for your health.

NOTE: If air filters show signs of excessive wear or are torn, they must be replaced. Contact your local dealer for replacement filters.

1. The air filter is under the top air inlet grill. 2. Grip the tab on the end of the filter, lift it up, then pull it towards

yourself. 3. If your filter has a small air freshening filter, un-clip it from the larger

filter. Clean the air freshening filter with a hand-held vacuum. 4. Clean the large air filter with warm, soapy water. Be sure to use a mild

detergent. 5. Rinse the filter with fresh water, then shake off any excess water. 6. Dry it in a cool, dry place, and refrain from exposing it to direct

sunlight. 7. When dry, re-clip the air freshening filter to the larger filter, then slide it

back into the indoor unit.

Fig. 16 Filter Tab

Fig. 17 Filter Tab

Fig. 18 Rinse the Filter

Fig. 19 Air Freshening Filter

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 the 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

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

Filter Tab

(some units)

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage. When cleaning the front panel, do not use water hotter than 105F (40.6C) 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

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

16

Indoor Unit Front Panel

To clean the front panel on the indoor unit, wipe the outside with a soft, 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 the main power supply off and remove batteries from the remote control.

System Operation Recommendations

The items outlined in the following list help to assure proper system operation:

Replace both remote control batteries at the same time.

Point the remote control toward the unit display panel when transmitting a command.

Keep doors and windows closed while unit is operating.

Contact an authorized service representative if a problem arises that cannot be easily resolved.

Do not perform cleaning or maintenance activities while the unit is on.

Keep the display panel on the unit away from direct sunlight and heat as this may interfere with remote control transmissions.

Do not block air intakes and outlets on the indoor or outdoor units.

Energy Saving Recommendations

The following recommendations will add greater efficiency to the ductless system:

Select a comfortable thermostat setting and leave it at chosen setting. Avoid continually raising and lowering the setting.

Keep the filter clean. Frequent cleaning may be necessary depending on indoor air quality.

Use drapes, curtains or shades to keep direct sunlight from heating the room on very hot days.

Limit the units run time by using the TIMER function.

Do not obstruct the air intake on the front panel.

Turn on the air conditioning unit before the indoor air becomes too uncomfortable.

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

17

TROUBLESHOOTING

Refer to Table 3 on page 18 before contacting your local dealer.

Table 1 Periodic Maintenance

* Increase frequency in dusty zones. Maintenance to be carried out by qualified service personnel. Refer to the Installation Manual.

Common Problems

Table 2 Common Problems

NOTE: If an issue persists, contact a local dealer or your nearest customer service center. Provide them with a detailed description of the unit malfunction as well as your model number.

INDOOR UNIT EVERY MONTH EVERY 6 MONTHS EVERY YEAR

Clean Air Filter* Replace Carbon Filter Change Remote Control Batteries

OUTDOOR UNIT EVERY MONTH EVERY 6 MONTHS EVERY YEAR

Clean Outdoor Coil from Outside Clean Outdoor Coil from Inside Blow Air Over Electric Parts Check Electric Connection Tightening Clean Fan Wheel Check Fan Tightening Clean Drain Pans

Problem Possible Causes

Unit does not turn on when pressing ON/ OFF The unit has a 3-minute protection feature that prevents the unit from overloading. The unit cannot be restarted within three minutes of being turned off.

The unit changes from COOL/HEAT mode to FAN mode

The unit may change its setting to prevent frost from forming on the unit. Once the temperature increases, the unit starts operating in the previously selected mode again. The set temperature has been reached, at which point the unit turns off the compressor. The unit continue operating when the temperature fluctuates again.

The indoor unit emits white mist In humid regions, a large temperature difference between the rooms air and the conditioned air can cause white mist.

Both the indoor and outdoor units emit white mist When the unit restarts in the HEAT mode after defrosting, white mist may be emitted due to moisture generated from the defrosting process.

The indoor unit makes noises A rushing air sound may occur when the louver resets its position. A squeaking sound may occur after running the unit in HEAT mode due to expansion and contraction of the unit's plastic parts.

Both the indoor unit make noises

Low hissing sound during operation: This is normal and is caused by refrigerant gas flowing through both indoor and outdoor units. Low hissing sound when the system starts, has just stopped running, or is defrosting: This noise is normal and is caused by the refrigerant gas stopping or changing direction. Squeaking sound: Normal expansion and contraction of plastic and metal parts caused by temperature changes during operation can cause squeaking noises.

The outdoor unit makes noises The unit will make different sounds based on its current operating mode.

Dust is emitted from either the indoor or outdoor unit The unit may accumulate dust during extended periods of non-use, which will be emitted when the unit is turned on. This can be mitigated by covering the unit during long periods of inactivity.

The unit emits a bad odor The unit may absorb odors from the environment (such as furniture, cooking, cigarettes, etc.) which will be emitted during operations. The units filters have become moldy and should be cleaned.

The fan of the outdoor unit does not operate During operation, the fan speed is controlled to optimize product operation.

Operation is erratic, unpredictable, or unit is unresponsive

Interference from cell phone towers and remote boosters may cause the unit to malfunction. In this case, try the following: Disconnect the power, then reconnect. Press ON/OFF button on remote control to restart operation.

2021 Carrier. All rights reserved.

A Carrier Company Edition Date: 06/21 Catalog No: OG-40MHH-04

Replaces: OG-40MHH-03

40MHH: Owners Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

18

Table 3 Troubleshooting

* 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.

PROBLEM POSSIBLE CAUSE SOLUTION

Unit/System Does Not Work

The circuit breaker has tripped or a fuse has blown. Reset the circuit breaker or replace the fuse with the specified replacement fuse.

Power failure Restart the operation when the power is restored.

Diagnostic lights illuminate.* Call your service representative

Voltage is too low. Call your service representative.

Poor cooling performance

The filter is blocked by dust. Clean the air filter

Temperature is not set properly. Check the temperature and reset if necessary.

A window or door is open. Close the window or door.

The outdoor unit is obstructed. Turn the unit off, remove the obstruction and turn it back on.

The fan speed is too low. Change the fan speed selection.

The operation mode is in Fan instead of Cool. Change the operating mode to Cool or reset the unit.

Poor heating performance

The filter is blocked with dust. Clean the filter.

The temperature is set too low. Check the temperature and reset if necessary.

A window or door is open Ensure all the doors and windows are closed while operating the unit.

The outdoor unit is obstructed. Turn unit off, remove the obstruction and turn the unit back on.

Unit stops during operation T

Manualsnet FAQs

If you want to find out how the 40MHH Carrier works, you can view and download the Carrier 40MHH Owner's Manual on the Manualsnet website.

Yes, we have the Owner's Manual for Carrier 40MHH as well as other Carrier manuals. All you need to do is to use our search bar and find the user manual that you are looking for.

The Owner's Manual should include all the details that are needed to use a Carrier 40MHH. Full manuals and user guide PDFs can be downloaded from Manualsnet.com.

The best way to navigate the Carrier 40MHH Owner's Manual is by checking the Table of Contents at the top of the page where available. This allows you to navigate a manual by jumping to the section you are looking for.

This Carrier 40MHH Owner's Manual consists of sections like Table of Contents, to name a few. For easier navigation, use the Table of Contents in the upper left corner.

You can download Carrier 40MHH Owner's Manual free of charge simply by clicking the “download” button in the upper right corner of any manuals page. This feature allows you to download any manual in a couple of seconds and is generally in PDF format. You can also save a manual for later by adding it to your saved documents in the user profile.

To be able to print Carrier 40MHH Owner's Manual, simply download the document to your computer. Once downloaded, open the PDF file and print the Carrier 40MHH Owner's Manual as you would any other document. This can usually be achieved by clicking on “File” and then “Print” from the menu bar.