Learn how to use and maintain this appliance
and troubleshoot.
Operations
Manual
048-TL-18K-MODU
048-TL-27K-MODU
048-TL-36K-MODU
Contents
Warning and Safety --------------------------------------------------------
Product Specication -----------------------------------------------------
Parts Details ------------------------------------------------------------------
Remote Control -------------------------------------------------------------
Operation Instructions ---------------------------------------------------
Wi- / App Connection ---------------------------------------------------
Care and Maintenance ---------------------------------------------------
Troubleshooting -------------------------------------------------------------
Disposal Guideline ---------------------------------------------------------
04
06
08
09
12
25
31
33
35
4
Operation Manual
Warning and Safety
*Read this guide before installation. Failure to follow the safety instructions may result in property
damage, serious injury or death.
• In the case of the appliance emitting smoke or burning smell, shut down the appliance and
disconnect from the power supply immediately.
• In the case of refrigerant leakage, shut down the appliance and disconnect from the
power supply. Contact a qualied technician for inspection. Refrigerant can be toxic and
ammable. Rapid evaporation of refrigerant may cause frostbite, cardiac arrhythmia, and/or
skin irritation.
• Cleaning and maintenance should be carried out by a specialized technician. The appliance
must be off and disconnected from the power supply before carrying out any maintenance.
• Do not disconnect the appliance from the power supply before shutting off the appliance.
This might create a spark and potentially cause a re.
• Repairs should be carried out by a professional or qualied technician only. Incorrect repair
could expose the user to potential electric shock or other kinds of hazards.
• Do not place ammable substances such as alcohol, etc. Or of pressurized containers such
as spray cans, or any other heat source near the appliance.
• Do not climb onto or place any objects on the appliance.
• Do not insert any objects into the appliance to prevent damage or injury.
DANGER WARNING
DANGER
WARNING
CAUTION
Indicates an imminently
hazardous situation that, if not
avoided, will result in death,
serious injury, or serious
property damage.
Indicates a potentially
hazardous situation that, if not
avoided, will result in death,
serious injury, or serious
property damage.
Indicates a potentially
hazardous situation that, if not
avoided, will result in minor to
moderate injury. It may also
be used to indicate unsafe
practice.
5
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Warning and Safety
• If the appliance is used in areas without the possibility of ventilation, precautions must be
taken to prevent any leaks of refrigerant.
• Only use the appliance as instructed in this booklet. These instructions are not intended
to cover every possible condition and situation. As with any electrical household
appliance, common sense and caution are therefore always recommended for usage and
maintenance.
• This appliance is designed and made for air conditioning in domestic environments only. It
must not be used for any other purpose such as drying clothes or cooling foods.
• This appliance can be used by children 8 years old and above and persons with reduced
physical, sensory, or mental capabilities, or lack of experience and knowledge if they have
been given supervision or instruction concerning the use of the appliance in a safe way and
understand the hazard involved.
• Children shall not play with the appliance.
• Always use the appliance with an air lter. Using the appliance without an air lter would lead
to dust or waste accumulation or inner parts failure.
• Emptied remote control batteries must be recycled or disposed of properly.
• Do not touch the appliance when barefoot or parts of the body are wet or damp.
• Do not obstruct the air inlet or outlet.
CAUTION
6
Operation Manual
Product Specication
Model 048-TL-18K-MODU 048-TL-27K-MODU
Power Supply 208V - 230V / 60Hz / 1P 208V - 230V / 60Hz / 1P
Rated Cooling Capacity
(Btu / h)
18000 27000
Rated Heating Capacity
(BTu / h)
20000 27000
Rated Input
Consumption
Cooling 1350W 1860W
Heating 1600W 1950W
Rated Current
Cooling 6.5A 8.8A
Heating 7.2A 9.1A
Refrigerant R410A R410A
Outdoor noise level 56 dBA 58 dBA
Outdoor unit
Net Dimension (W x D x H)
845 x 380 x 699 (mm) /
33.27” x 14.97” x 27.52”
900 x 360 x 805 (mm) /
35.43” x 14.17” x 31.69”
Outdoor unit
Net Weight
44.0kg / 97.0lb 56.0kg / 123.5lb
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Product Specication
048-TL-36K-MODU
208 V - 230 V / 60 Hz / 1P
36000
36000
2600W
2890W
11.8A
13.1A
R410A
63 dBA
1005 x 400 x 910 (mm) /
35.43” x 14.17” x 31.69”
75.5kg / 166.4lb
8
Operation Manual
Parts Details
Front Panel
Air Filter Screen
Air oulet
ON/OFF Switch
Display
Air deector and ap
‣ Page 24
‣ Page 25
LED Indicator Function
Indicator for timer, temperature, and error codes
Lights up when timer is enabled
Lights up when SLEEP mode is enabled
Lights up when the unit is turned on
Lights up when the unit is powered
NOTE:
• The graphical representation might have slight differences than the actual product.
9
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Remote Control
‣ Page 10
‣ Page 17
‣ Page 18
‣ Page 15, 16
‣ Page 17
‣ Page 20
‣ Page 20
‣ Page 19
‣ Page 21
‣ Page 18
Front of Remote Control
Display
Power Button
Temperature
Adjustment Button
Turbo Button
Sleep Button
Display Button
Timer Button
Fan Button
Swing Button
Mode Button
I FEEL Button
Anti-Mildew Button
ECO Button
Mute Button
• Displays the setting.
• Turn on / off the air
conditioner.
• Change temperature
or timer setting.
• Toggle Turbo function
on / off.
• Toggle Sleep function
on / off.
• Turn on / off the LED
display.
• Timer setting.
• Select fan speed.
• Control deectors &
louvers to direct air
ow.
• Select operation
mode (AUTO/COOL/
DRY/FAN/HEAT).
• I FEEL function
setting.
• Toggle anti-mildew
function on / off.
• Eco mode setting.
• Long press for 8°C
heating function.
• Toggle Mute function
on / off.
NOTE:
• Appearance of the display and function of the remote control might differ from some models.
• The shape and position of buttons and indicator of the remote control might differ from some models.
10
Operation Manual
Indicator Function
Signal Indicator
Auto Mode
Cool Mode
Dry Mode
Fan only Mode
Heat Mode
Battery Indicator
Gentle Wind Mode
I FEEL Mode
ECO Mode
Vertical Deectors Indicator
Indicator Function
Horizontal Louvers Indicator
Temperature Indicator
Fan Speed Indicator
Mute Mode
TURBO Mode
Child Lock
Sleep Mode
Health Mode
Anti-Mildew
Timer
Display ON/OFF Indicator
Remote Control
Remote Control Display
NOTE:
• Appearance of the display and function of the remote control may differ from some models.
• Some models may not have all the function listed above.
11
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°CCOOL
°FHEAT
Unit Adjustment (°C/°F)
To set or replace batteries.
Attention
1. Remove the back cover from the remote control.
2. Insert 2 LRO3 AAA 1.5V batteries.
3. Reinstall the back cover.
• Do not user rechargeable batteries.
• Replace the old batteries with new ones of the
same type.
• Do not dispose battieries as unsorted municipal
waste.
DIP Switch position Function
°C The display is adjusted in degree celsius
°F The display is adjusted in degree fahrenheit
COOL The display is adjusted in cooling mode ONLY
HEAT The display is adjusted in both cooling and heating mode
Remote Control
Back of Remote Control
12
Operation Manual
1. Press and select COOL function.
- is displayed on the display.
2. Press to set a temperature lower than the room temperature.
3. Press to change the air ow.
1. Press and select FAN function.
- is displayed on the display.
2. Press to change the operating fan speed.
The cool function allows the air conditioner to cool the room and reduce
humidity.
Fan function circulates and ventilates air in the room.
AUTO
AUTO
AUTO
AUTO
(FLASH)
(FLASH)
TURBO
TURBO
MUTE
MUTE
HIGH
HIGH
LOW
LOW
MID-HIGH
MID-HIGH
LOW-MID
LOW-MID
MID
MID
COOL
COOL
DRY
DRY
FAN
FAN
HEAT
HEAT
Operation Instructions
Cooling Mode
Fan Mode and Fan Speed
13
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1. Press and select AUTO function.
- is displayed on the display.
1. Press and select DRY function.
- is displayed on the display.
The auto function allows the air conditioner to automatically adjust the
room’s temperature according to the programmed auto mode temperature.
Dry mode allows the air conditioner to reduce the humidity of the air and
make the room more confortable.
AUTO
AUTO
COOL
COOL
DRY
DRY
FAN
FAN
HEAT
HEAT
Operation Instructions
Auto Mode
Dry Mode
14
Operation Manual
NOTE:
• During HEATING operation, the appliance can automatically activate defrost cycle, which
is essential to remove frost on the condenser for heat exchange function. This procedure
usually last for 2 - 10 minutes. During defrosting, indoor unit fan will stop operating. Once the
defrosting is completed, it will resume the HEATING mode automatically.
• The indoor unit will take 2 - 5 mintues of preheating before the unit starts blowing warm air.
• (For North American Market)
If necessary, press 10 times within 8 seconds under HEAT function to start forced
deforsting. The unit will speed up the outdoor defrosting.
Operation Instructions
1. Press and select HEAT function.
2. Press to set a temperature higher than the room temperature.
3. Press to change the air ow.
The heat function allows the air conditioner to warm up the room.
AUTO COOL DRY FAN HEAT
Heating Mode
AUTO
(FLASH)
TURBO
MUTE
HIGH
LOW
MID-HIGH
LOW-MID
MID
15
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1. Turn off the unit.
2. Press once to set switch on timer.
- and are displayed on the remote display and ashes.
3. Press to set desired switch on time.
- The timer increases by half an hour between 0 - 10 hours and one
hour between 10 - 24 hours.
4. Press again to conrm the timer setting.
5. After setting the ON timer, press and to set desired
mode and fan speed.
6. Press to set desired operation temperature.
1. Press again cancel the ON timer.
Set a timer to automatically switch ON the air conditioner.
Operation Instructions
Timer
Setting ON Timer
Cancel ON Timer
NOTE:
• While entering the programming, make sure each button press is within 5 seconds, otherwise,
the entire process will reset and you’ll have to start over.
16
Operation Manual
Operation Instructions
1. Press once to set switch off timer.
- and are displayed on the remote display and ashes.
2. Press to set desired switch off time.
3. Press again to conrm the timer setting.
1. Press again cancel the OFF timer.
Set a timer to automatically switch OFF the air conditioner.
Timer
Setting OFF Timer
Cancel OFF Timer
NOTE:
• While entering the programming, make sure each button press is within 5 seconds, otherwise,
the entire process will reset and you’ll have to start over.
1. Press and to activate child lock.
- is displayed on the display
2. Press and again to deactivate child lock.
Child lock function will disable all input from the remote control until
unlocked.
Child Lock
17
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Operation Instructions
Adjusting Air Flow
1. Press once to activate the horizontal louvers.
- is displayed on the display and louvers will behin to swing.
2. Press to set desired position.
1. Press once to activate the vertical deectors.
- is displayed on the display and deectors will begin to swing.
2. Press to set desired position.
Adjust horizontal louvers.
Adjust vertical deectors.
Adjusting up and down airow
Adjusting left and right airow
NOTE:
• Never manually adjust the louvers or the deectors. Attempt to move it by hand may damage
the moving mechanism.
1. Press to activate turbo function.
- is displayed on the display.
2. Press again to deactivate turbo function.
Turbo function will speed up cooling or heating and blow the maximum ow
of air.
Turbo Function
18
Operation Manual
Operation Instructions
Mute Function
Sleep Function
1. Press once to activate MUTE function.
- is displayed on the display and the indoor unit will operate at the
lowest fan speed.
2. Press again or press or to disable MUTE
function.
1. Press once to activate SLEEP function.
- is displayed on the display, and the air conditioner will operate
under sleep function for 10 hours before changing back to the
previous setting mode.
2. Press again to disable sleep function.
The air conditioner will operate at the quietest setting under mute function.
Sleep function is a pre-set automatic operating program which is suitable
during sleep time.
19
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Operation Instructions
Eco Function
Display Function
1. Press once to activate ECO function.
- is displayed on the display.
2. Press again to disable ECO function.
1. Press once to turn off the indoor unit display.
- is turned off on the remote control display.
2. Press again to turn on the display.
The air conditioner will automatically set the operation to save energy.
Switch ON / OFF the LED display on the indoor unit front panel.
NOTE:
• ECO function is available in both COOL and HEAT mode.
20
Operation Manual
Operation Instructions
I FEEL Function (Available only for models with I FEEL button)
Anti-Mildew Function (Available only for models with Anti-Mildew button)
1. Press once to activate I FEEL function.
- is displayed on the display.
2. Press again to disable I FEEL function.
1. Press once to activate Anti-Mildew function.
- is displayed on the display. and the unit will blow airow for
about 15 minutes and then shut off the unit
2. Press again to disable Anti-Mildew function.
I FEEL function turns your remote control into a portable thermostat that
automatically controls the unit to adjust the temperature of the room you
are in.
The air-conditioner will try to dry the indoor unit to prevent mildew.
NOTE:
• I FEEL function will automatically deactiveate after 2 hours.
NOTE:
• Anti-Mildew function is only available after running COOL or DRY mode for more than 30
minutes.
21
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Operation Instructions
Self-clean Function (Available only for certain heat pump inverter models)
8°C Heating Function
1. Press and at the same time toward the indoor unit.
- You will hear a “beep” sound from the indoor unit.
- is displayed on the display.
- The self-cleaning function will run for about 30 minutes, then it will
return to the previous mode.
2. You can press to cancel this function during the process.
- You will hear “beep- beep” when the process is nished or cancelled.
1. Press and hold 3 seconds to activate this function.
- or is displayed on the display.
- The function will return into stand by when the room temperature
reaches 48°F or 9°C.
- The appliance will automatically cancel this function when room
temperature is higher than 64°F or 18°C.
2. Press and hold 3 seconds to deactivate this function.
This function helps carry away the accumulated dirt, bacteria , etc. from the
indoor evaporator.
This function automatically starts HEAT mode when the room temperature
is lower than 46°F or 8°C.
NOTE:
• It is normal that the unit makes some noise during self-cleaning process as plastic materials
expand and contract with temperature change.
• It is recommended to operate this function when the indoor ambient temperature is under
86°F / 30°C, and the outdoor ambient temperature between 41°F to 86°F / 5°C to 30°C.
• It is suggested to run the self-cleaning function every 3 months.
22
Operation Manual
Operation Instructions
Gentle Wind Function
Health Function
1. Press and for 3 seconds to activate gentle wind
function.
- is displayed on the display.
2. Press and for 3 seconds to deactivate gentle wind
function.
1. Press and for 3 seconds to activate health
function.
- is displayed on the display.
2. Press and for 3 seconds to deactivate health
function.
The indoor unit will automatically close the vertical aps and give you a
comfortable gentle airow.
This function will activate the Ionizer / Plasma / Bipolar Ionizer / UVC lights
inside the unit.
23
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Operation Instructions
Ambient Temperature
Operating Temperature
You can safely use the air conditioner in the following ambient temperature conditions.
You can set the air conditioner temperature within the following range.
NOTE:
• Attempting to use the air conditioner beyond the specied temperature range may activate the protection device and cause the air
conditioner to stop operating.
• In the case of a tripped protection, shut down the air conditioner and restart, or switch to a different mode during operation. The air
conditioner will reset the protection device and the compressor will resume operation after 3 minutes.
NOTE:
• Avoid prolonged exposure to cold air, especially to children, elderly, or medical patients.
HEAT Mode COOL Mode DRY Mode
Ambient Room
Temperature
32°F - 80°F /
−0°C - 27°C
62°F - 86°F / 17°C - 30°C
Outdoor
Temperature
5°F - 75°F /
−15°C - 24°C
Low Temperature
Heating:
−4°F - 75°F /
−20°C - 24°C
T1 Climate:
59°F - 122°F /
15°C - 50°C
Low Temperature Cooling:
5°F - 122°F /
−15°C - 50°C
T3 Climate:
59°F - 131°F /
15°C - 55°C
HEAT Mode COOL Mode DRY Mode
Operation
Temperature Setting
61°F - 88°F / 16°C - 31°C
24
Operation Manual
Operation Instructions
Emergency Button
You can use the emergency button for limited control of the air conditioner in case the remote control
fails or is missing.
NOTE:
• Always wear insulation material when pressing the emergency button.
• In stand by mode, press this switch ONCE to start cooling
mode.
- You will hear a beep.
• In stand by mode, press this swtich TWICE within 3 seconds
to start heating mode.
- You will hear beep-beep.
• In operation, press this switch ONCE to turn off the unit.
- You will hear multiple beeps.
Indoor unit ON/OFF switch
25
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Wi- / App Connection
• Make sure you have a working Wi-Fi network.
• Connect your smart-phone to the Wi-Fi network.
• Wi-Fi network must support 2.4 - 2.5GHz, the appliance cannot connect
to a 5GHz network.
• Search “DELLA+” on app store or google play, or scan the QR code
below to download the application.
• Enable permission of storage, location, and camera for this application,
otherwise it will have a problem operating.
Wi-Fi Network
Download the Application
Wi-Fi Requirement
Standards of WLAN
IEEE 801.11 b/g/n(channels 1-14)
Protocal Stack Support
IPv4 / IPv6 / TCP / UDP / HTTPS / TLS /
MulticaseDNS
Security Support
WEP / WPA / WPA2 / AES128
Network Type Support
STA / AP / STA+AP
NOTE:
• The Della+ application is free; however, data charges may apply when downloading or using the application.
• Every effort has been made to ensure the accuracy of the instruction and graphic representations at the time of producing this
user guide. Your application’s user interface, icons, and screen may look different from this guide due to updates and development
changes.
• Della+ app can be altered without notice for quality improvement and also be deleted depending on the circumstances of
manufacturing rms.
26
Operation Manual
Wi- / App Connection
Tap the country menu.
Tap the “Register” button
for rst time user.
Enter your email address,
then read and agree to the
user agreement, and get
verication code.
Open the DELLA+ app on
your smart devices.
Select your country.
1
4
2
5
3
User Registration
27
v.02222023
Wi- / App Connection
Enter the verication
code.
Set your password and
tap “Done”.
76
User Registration
28
Operation Manual
Wi- / App Connection
Add Device
Enter your Wi-Fi network
password, then tap “Next”.
You can see your device
on the device list after
adding.
Follow the in-app
instruction on adding the
device.
3 34
Select the appliance type you want to add.
Model series can be found on the unit specication label or on
the packaging boxes.
Tap “Add Device” in the
center of the screen or the
“+” dropdown menu from
the top right corner.
1 2
Specication Label
29
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Wi- / App Connection
Basic Control
‣ Page 18
‣ Page 17
Temperature
Adjustment Button
Sleep Button
Function Button
Fan Button
Temperature Indicator
Mode Indicator
Schedule Button
Swing Button
Mode Button
• Change temperature
or timer setting.
• Sleep function setting.
• Access to more
functions.
• Select fan speed.
• Shows unit
temperature.
• Shows current mode.
• Set your ON/OFF
time.
• Control deectors
louvers to direct air
ow.
• Select operation
mode (AUTO/COOL/
DRY/FAN/HEAT).
The basic function of the application interface mimics to that of the remote control.
Power Button
• Turn on / off the air
conditioner.
NOTE:
• Some functions may not be avaliable on the application.
NOTE:
• Appearance of the display and function of the application might differ.
• The shape and position of buttons and indicator of the user interface might differ.
30
Operation Manual
Wi- / App Connection
Scene
Tap “Create Scene” in the
center of the screen or the
“+” dropdown menu from
the top right corner.
Customize your unique
user experience.
21
“Scene” function allows you to program your air conditioner to turn on / off depending on your location,
and set automated features.
31
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Care and Maintenance
Clean the Unit
Clean the Air Filter
1. Clean the air conditioner with a soft dry cloth or a damped cloth with neutral detergent.
1. Open the front panel.
2. Pull down the air lter.
3. Clean the air lter with soapy water.
4. Air dry the air lter
5. Put the air lter back to its original place after it is dry.
NOTE:
• Do not ush the machine with water.
• Do not use volatile liquid such as thinner or alcohol to prevent damaging the unit.
NOTE:
• Do not touch the ns inside the indoor unit with bare hands after removing the lter screen.
• Check and clean the air lter regularly to prevent dust accumulation.
• Clean the air lter frequently if the operating environment is dusty or has bad air quality.
• Before cleaning the unit, you must shut down the machine and cut off the power supply for
at least 5 minutes.
• Never ush the air conditioner with water.
CAUTION
<104°F /
40°C
32
Operation Manual
Care and Mainenance
Planning to not operate the air conditioner for a long period
Maintenance Routine
When Using the Air Conditioner After a Long Idle Period
1. Take out the batteries from the remote control and disconnect the power supply of the air
conditioner.
1. Clean the unit and the air lter screen.
2. Remove any obstacles at the air inlet and outlet of both the indoor and outdoor unit.
3. Make sure the drain pipe is unobstructed.
4. Install batteries into the remote control and connect the power supply to the air conditioner.
• Clean the air lter screen every 3 months.
• Call your HVAC technician to check on the refrigerant level every 3 to 4 years.
• Regularly check and remove any obstacles from the outdoor unit.
33
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Troubleshooting
Problem Possible Causes
The appliance is non operational
Power failure / plug pulled out
Damaged indoor or outdoor unit fan motor
Faulty compressor thermomagnetic circuit breaker
Faulty protective device or fuses
Loose Connection
Internal protection tripped
Outlet voltage does not match to that of the appliance
The unit is currently in ON-TIMER mode
Damaged electronic control board
Strange Odor Dirty air lter
Noise of running water Backow of liquid in the refrigerant circulation
A ne mist comes from the air outlet
This occurs when the air in the room becomes cold in COOL
or DRY modes
Strange noise
The noise made by thermal expansion of the front panel due
to temperature is normal and does not indicate a problem
Insufcient airow, either hot or cold
Unsuitable temperature setting
Obstructed air conditioner intakes and outlets
Dirty air lter
Fan speed is set at minimum
Other sources of heat in the room
Insufcient refrigerant levels
The appliance does not respond to
commands
Remote Control is too far away from the indoor unit
The batteries of the remote control need to be replaced
Obstacles between the indoor unit and the remote control
34
Operation Manual
Troubleshooting
Problem Possible Causes
The display is off
DISPLAY toggle is set to off
Power failure
• Strange noises during operation.
• Faulty electronic control board.
• Faulty fuses or switches.
• Spraying water or objects inside the appliance.
• Overheated cables or plugs.
• Very stong smells coming from the appliance.
Switch off the air conditioner immediately and cut off the power supply in the event of:
In case of an error, the indoor unit display will show the following error codes:
Contact a professional HVAC technician for further assistance.
Error Codes
Display Description
E1 Indoor room temperature sensor fault
E2 Indoor pipe temperature sensor fault
E3 Outdoor pipe temperature sensor fault
E4 Refrigerant system leakage or fault
E6 Malfunction of indoor fan motor
E7 Outdoor ambient temperature sensor fault
E0 Indoor and outdoor communication fault
E8 Outdoor discharge temperature sensor fault
E9 Outdoor IPM module fault
EA Outdoor current detect fault
EE Outdoor PCB EEPROM fault
EF Outdoor fan motor fault
EH Outdoor suction temperature sensor fault
35
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Disposal Guideline
This appliance contains refrigerant and other potentially hazardous materials. When disposing of the
appliance, follow all federal, state, and local regulations. DO NOT dispose of this product as normal
household waste or unsorted municipal waste.
When disposing of this appliance, you have the following options:
• Dispose of this appliance at a designated municipal electronic waste collection facility.
• When buying a new appliance, the retailer will take the old appliance.
• The manufacturer may take back the old appliance.
• Sell the appliance to a certied scrap metal dealer.
www.dellahome.com
800-863-4143
6:00a.m. – 4:00p.m. PST Monday - Friday
©Della All rights reserved.
Under the copyright law, this document may not
be printed, translated, reproduced, or distribute, in
whole or in part without written permission from
DELLA.
Every effort has been made to ensure that the
information in this document is accurate, DELLA is
not responsible for printing or clerical errors.
All trademarks, logo, brand names are the
property of their respective companies. Mention
of third-party products or service names are for
identification and informational purposes only.
Use of these names, brands, and trademarks
does not imply endorsement. DELLA assumes no
responsibility with regard to the performance or
use of these products.
