STEALTH SC-09CD-HP230 Slim Concealed Duct Indoor Unit Owner’s Manual

STEALTH SC-09CD-HP230 Slim Concealed Duct Indoor Unit

Product Information

The Stealth Slim Concealed Duct Air Conditioning & Heating System is a versatile and efficient cooling and heating solution for your indoor space. It consists of an indoor unit and an outdoor unit, which work together to provide comfortable temperatures throughout the year. The system offers various features to enhance performance and ensure user safety.

System Functions

• Whisper Quiet: The Stealth system operates with sound levels as low as 31 dB(A), ensuring a quiet and peaceful environment.
• Multi Fan Speeds: You can choose from three different fan speeds (Low, Medium, or High) to achieve maximum comfort in both cooling and heating modes.
• Built-in Condensate Lift Pump: The unit comes with a built-in drain pump that lifts condensate up to 11 inches above the drain pan, eliminating the need for an external condensate pump in most cases.
• Condensate Sentry: The system is equipped with a fail-safe mechanism that detects high levels of condensate in the pan and shuts off the system to prevent overflow.
• Intelligent Pre-Heating: In heating mode, the system monitors the discharge air temperature and delays the indoor fan until the indoor coil has warmed up. This prevents uncomfortable cool air from being blown into the room.

System Parts

The system consists of the following parts:

• Indoor Unit: This unit contains various components such as gas & liquid pipes, an electric box, interconnection cables, a wired tether controller, a remote controller, a front panel, a service cover, a liquid pipe, a gas pipe, a drain hose, and outdoor power supply.
• Outdoor Unit: This unit is responsible for expelling heat and includes air inlets and outlets.

Safety Precautions

Before operating the system, please take note of the following safety precautions:

• Read and understand the safety-alert symbol, including the signal words DANGER, WARNING, CAUTION, and NOTE.
• Ensure responsible adult supervision when children are around the appliance.
• Installation, startup, and servicing should be carried out by qualified installers and service technicians due to the hazardous nature of high-voltage electrical components, high refrigerant pressures, and moving parts.
• Installation of refrigerant pipes, drain pipes, electrical wiring, and ducts should only be done by qualified HVAC professionals.

Product Usage Instructions

Please follow these instructions for proper usage of the Stealth Slim Concealed Duct Air Conditioning & Heating System:

1. Read the entire owner’s manual carefully before operating the system.
2. Ensure that the system is installed by a qualified HVAC professional.
3. Refer to the table of contents in the manual for quick access to specific information.
4. Take note of the safety precautions mentioned earlier and adhere to them at all times.
5. Familiarize yourself with the system parts, both indoor and outdoor units.
6. To achieve whisper-quiet operation, set the fan speed to your desired level (Low, Medium, or High).
7. If condensate needs to be lifted above 11 inches, make use of the built-in condensate lift pump.
8. Pay attention to the condensate sentry feature, which shuts off the system to prevent overflow when the condensate pan reaches a high level.
9. In heating mode, allow the indoor coil to warm up before the indoor fan starts to prevent blowing cool air into the room.

For any specific instructions or troubleshooting, refer to the relevant sections in the owner’s manual.

SAFETY PRECAUTIONS

Please read the following before the operation.

• Recognize safety information.

• This is the safety alert symbol. When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words: DANGER, WARNING, and CAUTION. These words are used with the
  safety-alert symbol.

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

• WARNING signifies hazards which could result in personal injury or death.

• CAUTION is used to identify unsafe practices which may 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.

• NOTE: Your actual air conditioning & heating system and related devices may differ from the images shown in this manual.

WARNING

• This appliance is not intended for use by children without responsible adult supervision. Proper care should be taken to ensure safety.

• Heat pumps, air conditioners & heating equipment should be installed, started up, and serviced only by qualified installers and service technicians. Air conditioning, heat pumps and refrigeration systems are hazardous due to high voltage electrical components, high refrigerant pressures, and moving parts.

• Disconnect electrical power to the indoor and outdoor units before performing any maintenance or cleaning.

• Do not attempt to repair the system yourself. Incorrect repairs may cause electric shock or fire. Contact a qualified service technician for all service requirements.

• Keep combustible materials away from the unit.

• Do not put hands or any objects into the air inlets or outlets. This may cause personal injury or damage the unit.

• When cleaning, be careful not to splash water on the unit. Doing this may cause
  electric shock or damage to unit.

• In the event of a failure (burning smell, etc.), immediately disconnect all electrical power to indoor and outdoor units.

SYSTEM PARTS

Indoor Unit

Part Name

1. Gas & Liquid Pipes
2. Electric Box
3. Interconnection Cable
4. Wired Tether Controller
5. Remote Controller
6. Interconnection Cable
7. Front Panel
8. Service Cover
9. Liquid Pipe
10. Gas Pipe
11. Drain Hose
12. Outdoor Power Supply

Outdoor Unit

The refrigerant pipe, drain pipe, electrical wiring, and duct for this unit should be installed by a qualified HVAC professional only.

SYSTEM FUNCTIONS

WHISPER QUIET

• Not only are the Stealth systems energy efficient but they are quiet too. Slim Duct operates with sound levels starting as low as 31 dB(A).

MULTI FAN SPEEDS

• Whether operating in either Cooling or Heating mode, the indoor fan can be set to your choice of three different speeds (Low, Medium or High) to achieve maximum comfort.

BUILT IN CONDENSATE LIFT PUMP

• The unit features a built-in drain pump that lifts condensate up to 11 inches above the drain pan to a gravity condensate drain system. In most cases, the internal condensate lift mechanism will avoid the need for an external condensate pump.

CONDENSATE SENTRY

• The unit’s fail-safe mechanism recognizes when there is a high level in the condensate pan and shuts off the system to prevent overflow.

INTELLIGENT PRE-HEATING

• Slim Duct guards against the annoying cool air blown into the room in heating mode. The system constantly monitors the discharge air temperature. It will delay the indoor fan until  the indoor coil has warmed up to prevent blowing uncomfortable cool air into the room.

CONTROLLERS

• The Slim Duct unit comes with a factory supplied Wireless Remote Controller and a Wired Tether Controller.

WIRELESS REMOTE

• The multi-functional infrared hand held wireless controller is sleek, ergonomically designed, easy to use and has a large backlit LCD display.

TETHER CONTROLLER

• The wired Tether Controller mounts to the wall up to 26 feet from the unit.
• It provides complete control over your unit’s operation mode, desired temperature, fan speed, airflow direction and more.

INTELLIGENT DEFROST

• The Intelligent Defrost function increases room comfort and saves energy by eliminating unnecessary defrost cycles. In heating mode, the unit will monitor the outdoor coil for frost buildup. Once frost buildup has been detected, the system will switch into a defrost mode to remove the frost.

I FEEL MODE

• In Cooling Mode, the unit will sense room temperature at the Tether Controller instead of at  the indoor unit. It then adjusts airflow and temperature accordingly for the ultimate in personal comfort control and energy savings.

POWER FAILURE MODE

• Power interruptions are no problem for the Slim Duct system. User selections and system parameters are stored in non-volatile memory. These parameters are retained during a power failure. When power is returned, the Slim Duct system will automatically return to the last operating mode.

TURBO MODE

• Use Turbo Mode for situations where you wish to achieve the desired room temperature in the shortest possible time. This mode runs the unit at ultra high speeds for quickest results.

CLOCK

• The Tether and wireless controllers have a built-in clock feature. The remote will display the time of day in a 24-hour format.

TIMER MODE

• The unit can be programmed to turn ON or OFF after a specific amount of time. The time period is adjustable between one half and 24 hours.

MODE BUTTON

• The unit can be set to five different operating modes: HEAT, COOL, DRY, FAN ONLY and AUTO.
• NOTE: AUTO MODE has fixed setpoints of 68 °F heating and 78 °F cooling, which are not adjustable. The system will automatically select heating or cooling to maintain room temperature within this band.

FAHRENHEIT °F / CELSIUS °C

• The remote controller can be set to display in either °F or °C.

SLEEP MODE

• The unit will automatically adjust room temperature during your sleep time. This slight change in temperature will not affect your comfort level due to the natural effects that sleeping has on the body, but it will save on energy consumption and will lower electric bills.

X-FAN MODE

• When operating in humid areas, the X-fan or Dry Coil function allows the indoor fan to run for a pre-determined amount of time after the unit is turned off (cooling or dry modes) to
  ensure that additional moisture is removed from coil.

SELF-DIAGNOSIS

• With an on-board computer using real-time diagnostics, the Slim Duct system helps to prolong its own life. The automatic diagnosis feature continuously scans for unacceptable operating conditions or malfunctions. If such conditions occur, the system takes corrective action or stops. Error codes are shown on the Tether Control display to facilitate easy troubleshooting and repair.

PRIVACY LOCK MODE

• The Tether and wireless controllers have a Privacy Lock. The Privacy Lock averts unauthorized access or tampering with system settings.

AGENCY LISTINGS

• All systems are listed with AHRI (Air conditioning, Heating, and Refrigeration Institute)  and are ETL certified per UL Standards.

OPERATION OF WIRED TETHER CONTROLLER

Wired Tether Controller

INTRODUCTION FOR ICONS ON DISPLAY SCREEN

1. Swing Louver
2. Sleep Function
3. Auto Mode
4. Cool Mode
5. Dry Mode
6. Fan Mode
7. Heat Mode
8. Outdoor Unit Defrost Function
9. Keypad Lock Function
10. Turbo Function State
11. Memory Function (power failure recovery mode)
12. Ambient/setting  Temperature Value
13. X-Fan Function
14. Timer Function Value

ON/OFF BUTTON

Press On/Off to turn On the unit. Press again to turn it Off.

MODE SETTING
When the unit is ON, press Mode button to select an operating mode. It will change sequentially as shown below: Auto–Cool–Dry–Fan–Heat

TEMPERATURE SETTING
Press ▲ or ▼ to increase/decrease the setpoint temperature as shown below. In Cool, Dry, Fan or Heat mode, the setpoint temperature range is 61°F – 86 °F. In Auto mode, the setpoint temperature is not adjustable.

FAN SETTING
When the unit is ON, press Fan button to select the fan speed of the indoor unit. It will change sequentially as shown below.

TURBO MODE

• Turbo mode will force the unit up to the maximum capacity to heat or cool the room in the shortest amount of time. Turbo Mode can only be used on Heat or Cool modes.

Turbo Setting

• Press the Function button until the Turbo icon is displayed. Then press Enter/Cancel to confirm. To cancel, press the Function button to re-enter the Turbo setting status, then press Enter/Cancel.
• Turn On the unit and select Heat or Cool mode.
• Press Function until Turbo mode Icon is displayed.
• Press Enter/Cancel to start Turbo mode.

TIMER SETTING

• The Slim Duct system has two timer modes. The Timer-On mode will turn the unit ON after the preset time period. The Timer-Off Mode will turn the unit OFF after the preset time period.
• The preset time period can be from 0.5 to 24 hours in 0.5-hour increments.

Timer-On Setting

• Turn the unit Off, and press the Timer button. The OFF icon will flash and the hours will be displayed.
• Set the time period for the unit to remain OFF before turning it ON by pressing the ▲ or ▼ buttons. Press the Timer button to confirm and start Timer-On mode.

Timer-Off Setting

• Turn the unit On, press the Timer button. The ON icon will flash and the hours will be displayed.
• Set the time period for the unit to remain ON before turning OFF by pressing the ▲ or ▼ buttons. Press Timer button to confirm and start Timer-Off mode.

SLEEP MODE

• The unit will automatically adjust room temperature during your sleep time. This slight change in temperature will not affect your comfort level due to the natural effects that sleeping has on the body, but it will save on energy consumption and will lower your electric bill. Press the SLEEP button to select Sleep Mode. The SLEEP icon will appear.

In Cool or Dry modes:

• The unit will run at current room setpoint for 1 hour. After 1 hour, the setpoint will increase by 2 °F. After 2 hours, the setpoint will increase by 4 °F and maintain this setpoint until Sleep Mode is canceled.

In Heat mode:

• The unit will run at current room setpoint for 1 hour. After 1 hour, the setpoint will decrease by 2 °F. After 2 hours, the setpoint will decrease by 4 °F and maintain this setpoint until Sleep Mode is canceled.

Sleep Setting

• Turn the unit On and select a mode (ex. Heat, Cool, or Dry). Press the Function button until the Sleep icon appears on the display. Press the Enter/Cancel button to start Sleep Mode.

X-FAN MODE

• The X-Fan function may only be selected in Cool and Dry modes. After the unit is turned Off, the X-Fan function will keep the indoor fan running for a predetermined amount of time to dry the indoor evaporator coil to help avoid mold and mildew growth.

X-Fan Settings

• Turn the unit On and select Cool or Dry mode. Press Function button until X-fan icon is  displayed and then press Enter/Cancel to activate this function.

CELSIUS OR FAHRENHEIT TEMPERATURE DISPLAY

• The wired Tether Controller is set from the factory to display temperature in Fahrenheit (ºF). If Celsius (ºC) is desired, turn the unit OFF, press Mode and ▼ buttons at the same time for 5 seconds to alternate between temperature displays.

I-FEEL MODE

• In Cool Mode, the Slim Duct unit will sense room temperature at the wired Tether Controller instead of at the return air section of the indoor unit.

I-Feel Settings

• Press the Function button until the I-Feel icon is displayed, then press Enter/Cancel to activate the function.

PRIVACY LOCK

• The Privacy Lock prevents unauthorized access to the unit controls and prevents tampering with system settings. To lock the wired Tether Controller, press ▲ and ▼ buttons simultaneously for 5 seconds and the Lock Icon will be displayed.
• Repeat the process to unlock the Tether Controller and cancel Privacy Lock.

POWER FAILURE MODES

• The unit has two selectable system power up modes:
• IMPORTANT: This mode arrives set at “factory default,” but should not be left there. It must be reset to “Power Failure Recovery,” especially for use in commercial IT/server/computer rooms.

Power Failure Recovery

• After the initial power up, the unit will store user selections and system parameters in non-volatile memory. These parameters are retained during a power failure. When power is returned, the system will automatically return to the last operating mode.

Power Failure Standby

• The system will power up in standby or off mode. This is the factory default setting.

POWER FAILURE MODE SETTINGS

• To set Power Failure Recovery Mode, turn the unit OFF and press the Mode and ▲ buttons simultaneously for 5 seconds until the MEMORY Icon is displayed.
• Repeat the process to select Standby mode. In Standby mode the Memory icon is not displayed.

Remote Controller

Part Name

1. ON/OFF Button
2. Down Button
3. Up Button
4. Fan Button
5. Mode Button
6. I Feel Button
7. Clock Button
8. Timer On Button
9. X-Fan Button
10. Timer Off Button
11. Turbo Button
12. Sleep Button
13. Light Button

INTRODUCTION FOR ICONS ON DISPLAY SCREEN

REMOTE CONTROLLER OPERATIONS

• The wireless remote controller is sleek, versatile and allows you to change room temperatures and functions on your Slim Duct system from the palm of your hand. The large LCD display and buttons make it easy to understand and easy-to-use.
• The remote controller is set from the factory to display temperatures in °F. If °C is desired, turn the remote controller OFF with the ON/OFF button and then press the “MODE“ and “ ” buttons on the remote simultaneously for 5 seconds.

ON/OFF BUTTON

• When the system is in OFF mode, the remote controller will display the time and last room setpoint. When you press the ON/OFF button, this indicator will be displayed and the unit will start in the last operating mode and room setpoint.
• NOTE: If the ON/OFF button is pressed too soon after a stop, the compressor will not start for up to 5 min. due to the inherent protection against frequent compressor cycling.

I FEEL MODE

• In Cool Mode, press this button to use the I FEEL function, and the icon will be displayed. The unit will sense room temperature at the remote controller instead of at the indoor unit. It then adjusts airflow and temperature accordingly for the ultimate in personal comfort control and energy savings. Press the button again to exit this function. For best performance, keep remote controller away from heat or cold temperature sources while using this function.

LIGHT BUTTON

• Press this button to turn off display light on indoor unit.
• Press again to turn it back on.

MODE BUTTON

• Use the “MODE” button to select one of the available modes. The selected mode will be displayed on the remote controller and the appropriate light will illuminate on the front display panel.
• COOL – To cool to the selected setpoint and remove moisture. Press ▲or▼ adjust the set temperature. The system varies compressor speed to maintain the desired temperature.
• HEAT – To heat to selected room setpoint. Press ▲or▼ adjust set temperature. The system varies compressor speed to maintain desired room temperature.
• FAN ONLY – To circulate air without heating or cooling. Use the Fan Speed button to select a speed from low to high.
• DRY – Select DRY MODE to increase moisture removal during warm humid conditions. In this mode, the fan speed cannot be adjusted.

1. If the Room Temperature is above or equal to the set temperature, the system will be operating with high fan speed for several minutes and then it will switch to the selected fan speed.
2. If the Room Temperature is below the set temperature, the system will be OFF and the indoor fan will be at low speed.

TURBO MODE

• The desired room setpoint can be achieved faster in TURBO mode. After selecting the“HEAT”or“COOL” mode button, push the“TURBO”button. The TURBO icon will be
  displayed on the remote controller and the unit will run at an ultra-high speed. To deactivate the feature, push the“TURBO” button again. The unit will return to normal operation.

FAN BUTTON

• Press the FAN button to adjust the indoor fan speed:
• Low ( ), Medium ( ), High ( ), Turbo, and Auto.
• Turbo function is not available in Dry and Auto mode.
• The fan operates at low speed in Dry and Auto modes, and the speed cannot be adjusted.
• When Auto is selected, the unit will select the proper fan speed automatically, according to the ambient temperature.
• NOTE: Turbo function is not available in Dry and Auto Modes. The Slim Duct unit will select proper fan speed automatically according to ambient temperature.

CLOCK SETTING

• Press this button to set clock time.“ ” icon on remote controller will blink. Within 5 seconds, press ▲or▼ button to set clock time.
• With each pressing of or buttons, clock time will increase or decrease 1 minute. To quickly adjust time setting, press ▲and▼ hold or button for 2 seconds.
• Release button when you have reached the desired time setting. Press “CLOCK” button to confirm the time, and “ ” icon will stop blinking.
• NOTE: Clock time adopts 24-hour mode. A 12-hour time format is not available

PRIVACY LOCK

• The Privacy Lock prevents unauthorized access to the unit controls and prevents tampering with system settings. The remote controller can be locked by pushing the”▲”and ” ▼” buttons simultaneously for 5 seconds. The Privacy Lock icon will be displayed on the remote controller. Repeat the process to unlock the remote controller.

TIMER SETTING

Timer-ON / Timer-OFF BUTTON

• To set when you want the unit to turn On at the end of a selected time period, use the button labeled “Timer-ON/Timer-OFF”on the remote controller. Press this button to make the clock icon disappear, replaced with the word “ON” (blinking). Press or buttons to adjust timer setting 1 minute at a time. Press and hold or button to set timer more quickly. Press“Timer-ON/Timer-OFF” button again to confirm setting, and the word “ON” will stop blinking. To cancel, press“Timer-ON/Timer-OFF” button again.
• To set when you want the unit to turn Off at the end of a selected time period, use the same button. Press this button to make the clock icon disappear, replaced with the word “OFF” (blinking). Adjust settings the same as with“Timer-ON/Timer-OFF”settings.
• NOTE: Under Timer On and Off status, you can set“Timer-ON/Timer-OFF”simultaneously.
• Before setting timer, be sure to set clock to correct time.

SLEEP MODE

• The Slim Duct system will automatically adjust room temperature during your sleep time. This slight change in temperature will not affect your comfort level due to the natural effects that sleeping has on the body, but it will save on energy consumption and will lower your electric bill. Press the SLEEP button to select Sleep mode or Cancel. The SLEEP icon will appear.

TRADITIONAL MODE – SLEEP

• In Traditional Mode the unit will slowly relax the room set temperature by up to 4 °F until Sleep Mode is cancelled.

In Cool or Dry modes:

• The unit will run at current room setpoint for 1 hour. After 1 hour, the setpoint will increase by 2 °F (1℃). After 2 hours, the setpoint will increase by 4 °F (2℃) and maintain this setpoint until Sleep Mode is cancelled.

In Heat mode:

• The unit will run at current room setpoint for 1 hour. After 1 hour, the setpoint will decrease by 2 °F (1℃). After 2 hours, the setpoint will decrease by 4 °F (2℃) and maintain this setpoint until Sleep Mode is cancelled.

CHANGING BATTERIES AND ADDITIONAL NOTES

• To change batteries, slide cover off battery compartment on back of remote controller. Remove and safely discard old batteries. Insert two new AAA 1.5V dry batteries, using correct polarity.
• Reattach back cover.

NOTE:

• If the remote controller will not be used for a long time, remove batteries to prevent leakage damage.
• Be sure to aim the remote controller at the receiver of the main unit when operating.
• When remote emits a signal, icon will flicker; a tone will be heard when unit receives that signal.

CHANGING BATTERIES

CARE AND CLEANING

CLEANING THE FILTER

• Never remove the air filter from the unit except for cleaning; otherwise it may cause dust or dirt to restrict airflow to the unit.
• When the air conditioning unit is used in an environment with heavy dust, the air filter should be cleaned often (generally once every two weeks).

Perform the following on an annual basis:

• Clean or replace air filter.
• Inspect drain line for potential clogs or leaks.
• Hose off both sides of the coil in the outdoor unit to remove loose debris or dirt buildup.

CAUTION

• Take notice of the following items before cleaning your air conditioning unit.
• To avoid electric shock or injury, do not attempt to clean the unit unless it has been turned off and disconnected from the main power supply.
• Do not wash the unit with water; this may cause an electric shock.
• During cleaning, be sure to use a stable standing platform.

TROUBLESHOOTING

5-minute delay to prevent short and/or rapid cycling of the compressor._

Solution: Wait 5 minutes for the protection delay to expire.

Indoor unit emits unpleasant odor when started| Cause: Typically unpleasant odors are the result of mold or mildew forming on the coil surfaces or the air filter.

Solution: Wash indoor air filter in warm water with mild cleaner. If odors persist, contact a qualified service professional to clean the coil surfaces.

You hear a“water flowing” sound.| Cause: It is normal for the system to make“water flowing”or “gurgling”sounds from refrigerant pressures equalizing when the compressor starts and stops

Solution: The noises should discontinue as the refrigerant system equalizes after two or three minutes.

A thin fog or vapor coming out of the discharge register when system is running.| Cause: It is normal for the system to emit a slight fog or water vapor when cooling extremely humid warm ai

Solution: The fog or water vapor will disappear as the system cools and dehumidifies the room space.

You hear a slight cracking sound when the system stops or starts.| Cause: It is normal for the system to make “slight cracking” sounds from parts expanding and contracting during system starts and stops.

Solution: The noises will discontinue as temperature equalizes after 2 or 3 minutes.

The system will not run.| Cause: There are a number of situations that will prevent the system from running.

Solution: Check for the following:

•   Circuit breaker is “tripped” or “turned off.”

•   Power button of controller is not turned on.

•   Controller is in sleep mode or timer mode.

•   Otherwise, contact a qualified service professional for assistance.

The unit is not heating or cooling adequately.| Cause: There are a number of reasons for inadequate cooling or heating.

Solution: Check the following:

•   Remove obstructions blocking airflow into the room.

•   Clean dirty or blocked air filter that is restricting airflow into the system.

•   Seal around door or windows to prevent air infiltration into the room.

•   Relocate or remove heat sources from the room.

Water leaking from the indoor unit into the room.| Cause: While it is normal for the system to generate condensate water in cooling mode, it is designed to drain this water via a condensate drain system to a safe location.
 | Solution: If water is leaking into the room, it may indicate one of the following.

•   The indoor unit is not level right to left. Level indoor unit.

•   The condensate drain pipe is restricted or plugged.All restrictions must be removed to allow continuous drainage by gravity.

•   If problem persists, contact a qualified service professional for assistance.

The unit will not deliver air.| Cause: There are a number of system functions that will prevent air flow.
Solution: Check for the following:
• In heating mode, the indoor fan may not start for three minutes if the room temperature is very low.
This is to prevent blowing cold air.
• In heat mode, if the outdoor temperature is low and humidity is high, the system may need to
defrost for up to 10 minutes before beginning a heating cycle.
• In dry mode, the indoor fan may stop for up to three minutes during the compressor off delay.
• Otherwise, you should contact a qualified service professional for assistance.

• The unit has onboard diagnostics. The outdoor unit will provide status indicators. The Tether controller will display error codes. The following is a summary of the codes with explanation:

__

Malfunction Name

| Tether Control Display| Outdoor Unit Indicators| __

Possible Causes

---|---|---|---
Yellow| Red
Liquid Valve Coil Temperature Sensor Malfunction| b5|  |  | 1) Loose or bad connection between sensor and control board

2) Liquid valve temperature sensor damaged

3) Control board malfunction

Gas valve temperature sensor is open/short circuited| b7|  |  | Hardware malfunction
System Configuration Malfunction| C5|  |  | 1) No jumper cap inserted on the control board

2) Incorrect or damaged jumper cap on control board

3) Indoor and outdoor units are not compatible

Wrong connection of communication wire or malfunction of electronic expansion valve| dn|  |  | Hardware malfunction
System High Pressure| E1|  |  | 1) Over charged with refrigerant

2) Blocked or dirty outdoor coil

3) Extreme outdoor ambient conditions

Indoor Anti-Freeze Protection| E2| 3 flashes and 1 sec Off|  | 1) Low return airflow

2) Indoor fan speed is too low

3) Indoor coil is blocked or dirty

Low Pressure Protection| E3|  | 9 flashes and 1 sec Off| 1) Low on refrigerant

2) Pressure sensor is damaged

Compressor High Discharge Temperature Protection| E4| 7 flashes and 1 sec Off|  | Please refer to the malfunction analysis (discharge temperature, overload) in service manual
Overcurrent Protection| E5| 5 flashes and 1 sec Off|  | 1) Supply voltage is unstable

2) Supply voltage is too low and system load is too high

3) Indoor coil is blocked or dirty

Communication Malfunction| E6| Continuous On|  | 1) Communication cable is mis-wired between indoor and outdoor units

2) Indoor or Outdoor control board malfunction

Mode conflict (Indoor units calling for simultaneously Heating and Cooling)| E7|  |  | Operation status
Malfunction Name| Tether Control Display| Outdoor Unit Indicators| Possible Causes
---|---|---|---
Yellow| Red
High Temperature Resistant Protection| E8| 6 flashes and 1 sec Off|  | 1) Incorrect refrigerant charge level

2) Refrigerant metering device malfunction

3) Compressor malfunction

Cold Air Protection| E9|  |  | 1) Indoor coil has not reach minimum heating temperature

2) Indoor ambient is abnormally cold

3) Indoor control board malfunction

EEPROM Memory Malfunction| EE| 11 flashes and 1 sec Off|  | Control board malfunction
Module Phase Current Protection – Frequency Decrease/Limit Mode| En|  |  | Outdoor control board malfunction
Module Temperature Protection – Frequency Decrease/Limit Mode| EU|  | 11 flashes and 1 sec Off| 1) IPM module over heating or malfunctioning

2) Improper voltage at IPM Module

Refrigerant Leakage Protection| F0|  | 9 flashes and 1 sec Off| 1) refrigerant leak(s)

2) Indoor coil temperature sensor no calibrated

3) Refrigerant flow is restricted ( ex. valve, exv, debris)

Indoor Ambient Temperature Sensor Malfunction| F1|  |  | 1) Loose or bad connection between sensor and control board

2) Indoor ambient temperature sensor damaged

3) Control board malfunction

Indoor Coil Temperature Sensor Malfunction| F2|  |  | 1) Loose or bad connection between sensor and control board

2) Indoor coil temperature sensor damaged

3) Control board malfunction

Outdoor Ambient Temperature Sensor Malfunction| F3|  | 6 flashes and 1 sec Off| 1) Loose or bad connection between sensor and control board

2) Outdoor ambient temperature sensor damaged

3) Control board malfunction

Outdoor Coil Temperature Sensor Malfunction| F4|  | 5 flashes and 1 sec Off| 1) Loose or bad connection between sensor and control board

2) Outdoor coil temperature sensor damaged

3) Control board malfunction

Outdoor Discharge Temperature Sensor Malfunction| F5|  | 7 flashes and 1 sec Off| 1) Loose or bad connection between sensor and control board

2) Discharge temperature sensor damaged

3) Control board malfunction

Compressor Overload Protection – Frequency Decrease/Limit Mode| F6|  | 3 flashes and 1 sec Off| 1) Incorrect refrigerant charge

2) Metering device malfunction

3) Compressor malfunction

Oil Return Protection – Frequency Decrease/Limit Mode| F7|  |  | Normal function status code only
System Current Overload Protection – Frequency Decrease/Limit Mode| F8|  | 1 flashes and 1 sec Off| 1) Input voltage too low

2) System pressure too low

Malfunction Name| Tether Control Display| Outdoor Unit Indicators| Possible Causes
---|---|---|---
Yellow| Red
High Compressor Discharge Temperature – Frequency Decrease/Limit Mode| F9| 2 flashes and

1 sec Off

| 4 flashes and 1 sec Off| 1) Cooling load is too great

2) Outdoor ambient temperature too high

3) Refrigerant charge too low

4) Metering device malfunction

Indoor Coil Freeze Protection – Frequency Decrease/Limit Mode| FH|  |  | 1) Indoor coil has not reach minimum heating temperature

2) Indoor ambient is abnormally cold

3) Indoor control board malfunction

Pump Down or Gathering Refrigerant Status| Fo| 17 flashes and 1 sec Off|  | Optional Service Mode
Defrost Mode in Heating| H1|  |  | Operation status
Compressor Overload Protection| H3| 8 flashes and 1 sec Off|  | 1) Wiring terminal OVC-COMP is loose

2) Refer to the malfunction analysis in Service Manual

IPM Module Protection| H5| 4 flashes and 1 sec Off|  | 1) IPM module over heating

2) Improper or Low voltage at the IPM module

3) IPM module malfunction

Indoor DC Fan Motor Malfunction| H6|  |  | 1) Loose connections between fan motor and control board

2) Fan motor or blower wheel bearings malfunction

3) Control board malfunction

Compressor De-Synchronized Malfunction| H7|  |  | 1) Compressor voltage is not balance

2) Control board malfunction

3) Compressor malfunction

Power Factor Correction (PFC) Protection| HC| 14 flashes and 1 sec Off|  | 1) Mis-wiring of the reactor filter and PFC capacitor

2) Reactor filter or PFC capacitor malfunction

3) Control board malfunction

Compressor Demagnetization Protection| HE|  |  | Compressor malfunction
High Input Power Protection| L9| 9 flashes and 1 sec Off|  | 1) Compressor malfunction

2) Power circuit malfunction

Start-Up Malfunction| LC|  |  | 1) Over charged with refrigerant

2) Control board malfunction

3) Compressor malefaction

Compressor phase-lacking/ phase-inverse protection| Ld|  |  | Hardware malfunction
Malfunction Name| Tether Control Display| Outdoor Unit Indicators| Possible Causes
---|---|---|---
Yellow| Red
Incompatible Indoor and Outdoor Units| LP| 16 flashes and 1 sec Off|  | Indoor and outdoor units are not compatible
Compressor Phase Current Protection| P5|  |  | 1) IPM module malfunction

2) Outdoor control board malfunction

3) Compressor malfunction

Module Temperature Sensor Malfunction| P7|  |  | Outdoor control board malfunction
Module Temperature Protection| P8|  |  | 1) Lack of thermal grease on IPM module

2) Heat sink (radiator) not tightly mounted

3) Control board malfunction

High DC Bus Voltage Protection| PH| 13 flashes and 1 sec Off|  | 1) Supply voltage on L1 and N is above 265Vac

2) Capacitor on control board malfunction

3) Outdoor control board malfunction

Low DC Bus Voltage Protection| PL| 12 flashes and 1 sec Off|  | 1) Supply voltage on L1 and N is below 150Vac

2) Capacitor on control board malfunction

3) Outdoor control board malfunction

Capacitor Charging Malfunction| PU|  |  | Capacitor malfunction
Compressor Phase-Current Detection Malfunction| U1|  |  | Outdoor control board malfunction
DC Bus Voltage Dip| U3|  |  | Outdoor control board malfunction
Input Current Detection Malfunction| U5|  |  | Outdoor control board malfunction
The four-way valve is abnormal| U7|  |  | Hardware malfunction
Zero cross detection circuit malfunction(for indoor unit)| U8|  | | Hardware malfunction

Notes:

1. During defrosting process, the heating indicator is on for 10s and off for 0.5s.
2. Refer to Service Manual for additional information.

ENERGY SAVING TIPS

1. Relaxing room temperature at night is OK: During the nighttime hours you
   don’t require the same level of conscious cooling or heating. Try using Sleep Mode to gradually relax room temperature and allow the unit to run less and save energy.

2. Curtains and shades: In the summer, you need to block the effects of the sun.
   Close window curtains and shades on the south and west side of your home to help block solar heat. In winter, the sun is your friend. Open curtains and shades to allow solar heat into your room.

3. Close doors: If you don’t need to heat and cool your whole home, confine the heating and cooling to one room by closing doors. Limit the space you’re heating and cooling to specified capability of the unit.

4. Service the unit: Some basic maintenance might be all you need. The outdoor unit will greatly benefit from a good hosing out, especially in treed areas where seeds and other debris can stick to coil fins and make the unit work up to 15% harder!

5. Rearrange the room: Furniture that obstructs airflow means you could be heating and cooling the back of a chair or the front of a sofa instead of the actual living space. Remove or rearrange obstacles blocking airflow.

6. Try 75 degrees: 75 °F is a good point for an air conditioner to run at its optimal performance level. Even a 5-degree change in temperature can make your unit use up to 40% more energy!

7. Lighting: Turning lights off can help reduce your heat. Each light bulb is a tiny heater. Your air conditioner must waste energy overcoming the heat from your lights to reach and hold your desired room temperature.

8. Is anyone home? If possible, while you’re away turn your unit to Auto mode and make sure windows and drapes are closed. Although room temperature may be less than optimal for a few minutes when you come home, the unit will soon have the
   room back to your desired temperature.

9. Don’t forget the fan: The fan is much like a car. The faster it runs, the more energy it uses. Sometimes we need the car to go fast, but slow is good enough most of the time. Try saving money by using the comfortable quiet low fan speed as much as possible.

LIMITED WARRANTY STATEMENT

FOR WARRANTY SERVICE OR REPAIR:
Contact your installing contractor. You may find the installer’s name on the equipment or in your Owner’s packet. Complete product registration below and send back by email to Info@StealthComfort.com

PRODUCT REGISTRATION

• Model No.—————————-
• Serial No. Date of Installation——————————————-
• Owner Name—————————————————————–
• Address of Installation——————————————————–
• Installing Contractor————————————————————
• Address————————————————————————-
• Phone No. / E-mail———————————————————–
• STEALTH (1HVAC Energy LLC) warrants this product against failure due to defect in materials or workmanship under normal use and maintenance as follows.
• All warranty periods begin on the date of original installation. If the date cannot be verified, the warranty period begins one hundred twenty (120) days from date of manufacture. If a part fails due to defect during the applicable warranty period, Company will provide a new or remanufactured part, at Company’s option, to replace the failed defective part at no charge for the part. This limited warranty is subject to all provisions, conditions, limitations and exclusions listed below.
• A warranty period of Five (5) years on all parts to the original registered end user.
• A warranty period of seven (7) years on the compressor.
• Online registration of this product at (Stealthcomfort.com/warranty-information) extends the warranty as follows – one year unit replacement and twelve (12) year compressor warranty.
• Warranty applies only to products remaining in their original installation location.
• Defective parts must be returned to the distributor.
• LIMITATIONS OF WARRANTIES: ALL IMPLIED WARRANTIES AND/OR CONDITIONS (INCLUDING IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR USE OR PURPOSE) ARE LIMITED TO THE DURATION OF THIS LIMITED WARRANTY, SOME STATES OR PROVINCES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY OR CONDITION LASTS, SO THE ABOVE MAY NOT APPLY TO YOU. THE EXPRESS WARRANTIES MADE IN THIS WARRANTY ARE EXCLUSIVE AND MAY NOT BE ALTERED, ENLARGED, OR CHANGED BY ANY DISTRIBUTOR, DEALER, OR OTHER PERSON, WHATSOEVER. THIS WARRANTY DOES NOT COVER:

1. Labor or other costs incurred for diagnosing, repairing, removing, installing, shipping, servicing or handling of either defective parts, or replacement parts, or new units.
2. Product cleaning required prior to warranty service and repair.
3. Normal maintenance as outlined in the installation and servicing instructions or Owner’s Manual, including filter cleaning and/or replacement and lubrication.
4. Failure, damage or repairs due to faulty installation, misapplication, abuse, improper servicing, unauthorized alteration or improper operation.
5. Failure to start due to voltage conditions, blown fuses, open circuit breakers, or damages due to the inadequacy or interruption of electrical service.
6. Failure or damage due to floods, winds, fires, lightning, accidents, corrosive environments (rust, etc.) or other conditions beyond the control of the Company.
7. Failure or damage of coils or piping due to corrosion on installations within one (1) miles of sea coast or corrosive body.
8. Parts not supplied or designated by Company, or damages resulting from their use.
9. Products installed outside the 48 contiguous United States, except the District of Columbia and Hawaii.
10. Electricity or fuel costs, or increases in electricity or fuel costs from any reason whatsoever, including additional or unusual use of supplemental electric heat.
11. Any cost to replace, refill or dispose of refrigerant, including the cost of refrigerant.
12. Shipping damage or damage as a result of transporting the unit.
13. Accessories such as condensate pumps, line sets and so forth are not covered.
14. Any special, indirect or consequential property or commercial damage of any nature whatsoever. Some states or provinces do not allow the exclusion of incidental or consequential damages, so the above limitation may not apply to you. 15. Consumable components, such as air filters, are not covered under parts warranty.

• This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
• In jurisdictions where warranty benefits conditioned on registration are prohibited by law, registration is not required, and the STANDARD warranty period shown above will apply.
• 1HVAC Energy LLC ©2022
• Info@StealthComfort.com

Documents / Resources

| STEALTH SC-09CD-HP230 Slim Concealed Duct Indoor Unit [pdf] Owner's Manual
SC-09CD-HP230, SC-12CD-HP230, SC-18CD-HP230, SC-24CD-HP230, SC-09CD-HP230 Slim Concealed Duct Indoor Unit, Slim Concealed Duct Indoor Unit, Duct Indoor Unit, Indoor Unit
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