What to do if the Timer LED is on but my Samsung MH068FXEA4 Air Conditioner won't turn on?
- KKimberly Davis DVMAug 18, 2025
The timer is activated, and the unit is in ready mode. Cancel the timer operation for normal operation.
What to do if the Timer LED is on but my Samsung MH068FXEA4 Air Conditioner won't turn on?
The timer is activated, and the unit is in ready mode. Cancel the timer operation for normal operation.
Why doesn't my Samsung MH068FXEA4 cool when the room is hotter than the set temperature?
This can happen after a 3-minute delay when the compressor is re-operated, or when power is turned on.
What to do if my Samsung MH068FXEA4's compressor stops intermittently in COOL or DRY mode, and the fan speed decreases?
The compressor might be stopping intermittently, or the indoor fan speed might be decreasing, to prevent the inside/outside air from freezing, depending on the inside/outside air temperature.
Why does my Samsung Air Conditioner's compressor stop intermittently in DRY mode?
In DRY mode, the compressor operation is automatically controlled depending on the room temperature and humidity.
Why does the compressor and indoor fan stop intermittently in HEAT mode on my Samsung MH068FXEA4 Air Conditioner?
To protect the compressor from overheated air in HEAT mode, the compressor and indoor fan will stop intermittently if the room temperature exceeds the set temperature.
Why do the indoor and outdoor fans stop intermittently in HEAT mode on my Samsung MH068FXEA4 Air Conditioner?
In HEAT mode, the compressor operates in a reverse cycle to remove exterior ice. The indoor and outdoor fans do not operate intermittently for within 20% of the total heater operation.
Why is the compressor of the outdoor unit operating when my Samsung MH068FXEA4 is turned off in HEAT mode?
When the unit is turned off while de-ice is activated, the compressor continues operation for up to 12 minutes (maximum) until the deice is completed.
What to do if my Samsung Air Conditioner indoor and outdoor units do not operate properly?
Check the terminals to ensure the indoor and outdoor units are properly linked by the same number of cables and that the connecting position on the terminal is correct.
Why does my Samsung MH068FXEA4 compressor and indoor fan stop intermittently in HEAT mode?
The compressor and indoor fan of your Samsung Air Conditioner may stop intermittently in HEAT mode if the room temperature exceeds the set temperature. This is a protective measure to prevent the compressor from overheating.
Why does the compressor stop intermittently and the fan speed decrease on my Samsung MH068FXEA4 in COOL or DRY mode?
The compressor of your Samsung Air Conditioner might stop intermittently, or the indoor unit fan speed might decrease in COOL or DRY mode to prevent the air from freezing inside or outside, depending on the ambient air temperature.
Details on Multi Inverter Series, BLDC Compressor, and installation convenience.
Guidelines for safe and proper installation of the air conditioner.
Rules for connecting power, using circuit breakers, and avoiding hazards.
Precautions during operation, including repair, liquid spills, and airflow obstruction.
Steps for safely disposing of the air conditioner unit and remote control.
Guidelines on handling, supervision of users, and current measurement standards.
Highlights of the Multi Inverter Series, efficiency, installation, and unit types.
Identification of parts for Indoor Units MH✳✳✳FPEA✳ /MH✳✳VP2-✳✳.
Identification of parts for Indoor Units MH✳✳✳FWEA/MH✳✳VW2-✳✳.
Identification of parts for Indoor Units MH✳✳✳FKEA.
Identification of parts for Indoor Units MH✳✳✳FDEA/MH✳✳✳FEEA.
Identification of parts for Outdoor Units.
Detailed specifications for Indoor and Outdoor Units, covering performance, dimensions, and parts.
Comparison of design, weight, dimensions, noise, and features for various unit models.
List of accessories for Indoor Units (MH✳✳✳FPEA✳ /MH✳✳VP2-✳✳).
List of accessories for Indoor Units (MH✳✳✳FWEA/MH✳✳VW2-✳✳).
List of accessories for Indoor Units (MH✳✳✳FKEA).
List of accessories for Indoor Units (MH✳✳✳FDEA).
List of accessories for Indoor Units (MH✳✳✳FDEA(cont.)).
List of accessories for Indoor Units (MH✳✳✳FEEA(cont.)).
List of accessories for Outdoor Units (MH040FXEA2/MH052FXEA2...).
List of accessories for Outdoor Units (MH068FXEA4/MH080FXEA4...).
List of accessories for Transmitter Units (MIM-B04).
Indoor unit error codes, explanations, and main checking points for various models.
Indoor unit abnormal conditions, indicators, and operating status for MH✳✳✳FKEA.
Indoor unit error indications on LED for MH✳✳✳FDEA/MH✳✳✳FEEA.
Indoor unit error indications on LED for MH✳✳✳FDEA/MH✳✳✳FEEA (cont.).
Outdoor unit error codes, explanations, and main checking points.
Outdoor unit error codes, explanations, and main checking points (cont.).
Procedure for entering setup mode and selecting options for specific remote control models.
Procedure for checking selections, pressing ON/OFF, and unit operation test-run.
Procedure for entering setup mode and selecting options for specific remote control models.
Procedure for checking selections, pressing ON/OFF, and unit operation test-run.
Procedure for entering setup mode and selecting options for specific remote control models.
Procedure for checking selections, pressing ON/OFF, and unit operation test-run.
List of option codes for various indoor unit models based on external static pressure.
Step-by-step procedure for disassembling the front panel and related parts of the indoor unit.
Procedure for disassembling the front panel and related parts of the indoor unit.
Procedure for opening and detaching the front grille and filter of the indoor unit.
Procedure for disassembling filter-pre and ass'y cover bottom for silhouette duct units.
Procedure for disassembling cabinet top motor and cover blower uppers for slim duct units.
Procedure for disassembling the control box, cabinet upper, and front cabinet of the outdoor unit.
Procedure for disassembling the control box, cabinet upper, and front cabinet of the outdoor unit.
Exploded view diagram of the indoor unit with numbered parts.
List of parts for Indoor Units (MH020FPEA, MH023FPEA, etc.).
List of parts for Indoor Units (cont.).
Exploded view diagram of the indoor unit with numbered parts.
List of parts for Indoor Units (MH052FPEA/MH052FPEA1).
Exploded view diagram of the indoor unit with numbered parts.
List of parts for Indoor Units (MH023FWEA, MH026FWEA, etc.).
List of parts for Indoor Units (cont.).
Exploded view diagram of the indoor unit with numbered parts.
List of parts for Indoor Units (MH052FWEA).
Exploded view diagram of the indoor unit with numbered parts.
List of parts for Indoor Units (MH026FKEA/MH035FKEA).
Exploded view diagram of the indoor unit with numbered parts.
List of parts for Indoor Units (PK118MG).
Exploded view diagram of the indoor unit with numbered parts.
List of parts for Indoor Units (MH052FDEA).
Exploded view diagram of the indoor unit with numbered parts.
List of parts for Indoor Units (MH023FEEA/MH026FEEA/MH035FEEA).
Exploded view diagram of the outdoor unit with numbered parts.
List of parts for Outdoor Units (MH040FXEA2, MH052FXEA2...).
Exploded view diagram of the outdoor unit with numbered parts.
List of parts for Outdoor Units (MH068FXEA4, MH080FXEA4...).
List of electrical components for MAIN PCB (MH✳✳✳FPEA✳ /MH✳✳VP2-✳✳).
List of electrical components for MAIN PCB (MH✳✳✳FWEA/MH✳✳VW2-✳✳).
List of electrical components for MAIN PCB (MH✳✳✳FKEA).
List of electrical components for MAIN PCB (MH✳✳✳FEEA).
List of electrical components for SUB PCB (MH✳✳✳FWEA, MH✳✳VW2-✳✳).
List of electrical components for OUTDOOR PCB (MH040FXEA2, MH052FXEA2...).
List of electrical components for OUTDOOR PCB (MH068FXEA4, MH080FXEA4...).
Wiring diagram for indoor units MH✳✳✳FPEA✳ /MH✳✳VP2-✳✳.
Wiring diagram for indoor units MH✳✳✳FWEA/MH✳✳VW2-✳✳.
Wiring diagram for indoor units MH✳✳✳FKEA.
Wiring diagram for indoor units MH✳✳✳FDEA.
Wiring diagram for indoor units MH✳✳✳FEEA.
Wiring diagram for outdoor units MH040FXEA2, MH052FXEA2...
Wiring diagram for outdoor units MH068FXEA4, MH080FXEA4...
Schematic diagram for indoor units MH✳✳✳FPEA✳ /MH✳✳VP2-✳✳.
Schematic diagram for indoor units MH✳✳✳FWEA/MH✳✳VW2-✳✳.
Schematic diagram for indoor units MH✳✳✳FKEA.
Schematic diagram for indoor units MH✳✳✳FDEA.
Schematic diagram for indoor units MH✳✳✳FEEA.
Schematic diagram for outdoor units MH040FXEA2, MH052FXEA2...
Schematic diagram for outdoor units MH068FXEA4, MH080FXEA4...
PCB circuit descriptions for outdoor units MH040FXEA2, MH052FXEA2...
PCB circuit descriptions for outdoor units MH068FXEA4, MH080FXEA4...
Refrigerating cycle diagram for outdoor units MH040FXEA2, MH052FXEA2...
Refrigerating cycle diagram for outdoor units MH19VP2X/MH19VW2X.
Refrigerating cycle diagram for outdoor units MH30VP2X/MH30VW2X.
Refrigerating cycle diagram for outdoor units MH068FXEA4/MH080FXEA4.
PCB diagram for Indoor Unit Main PCB (MH✳✳✳FPEA✳ /MH✳✳VP2-✳✳).
PCB diagram for Indoor Unit Main PCB (MH✳✳✳FWEA/MH✳✳VW2-✳✳).
PCB diagram for Indoor Unit Sub PCB (MH✳✳✳FWEA/MH✳✳VW2-✳✳).
PCB diagram for Indoor Unit MH✳✳✳FKEA.
PCB diagram for Indoor Unit MH✳✳✳FDEA.
PCB diagram for Indoor Unit MH✳✳✳FEEA.
PCB diagram for Outdoor Unit Main PCB (MH040FXEA2, MH052FXEA2...).
PCB diagram for Outdoor Unit Main PCB (MH068FXEA4, MH080FXEA4...).
Explanation of buttons and functions on the remote control for specific models.
Explanation of remaining buttons and functions on the remote control.
Overview of the wireless remote control buttons and display elements.
Explanation of basic operating modes like Auto, Cool, Heat for specific models.
Explanation of Dry and Fan modes for specific models.
Explanation of advanced functions like Turbo, Energy Saving, Auto Cleaning, Sound, and Anions.
Overview of the wireless remote control buttons and display elements.
Explanation of remote control buttons and functions for specific models.
Overview of the wireless remote control buttons and display elements.
Initial checks for voltage, wiring, and common operational symptoms not related to malfunctions.
Steps for checking installation elements and PCB display options using test buttons.
Procedure for auto addressing when SW2-1 is ON, including PIPE CHECK MODE.
Checking address numbers and error codes for manual addressing mode.
Flowchart for basic troubleshooting of power, indoor, and outdoor unit issues.
Continuation of the troubleshooting flowchart for communication and operational mode errors.
Steps to check outdoor controller wiring, AC line, LED patterns, and hardware/abnormal conditions.
Procedure to check the display PCB LED for error codes.
Measuring DC voltages at various points on PCBs for troubleshooting.
Checking PFC circuit operation and DC-LINK voltage, monitoring current with VIEW MODE.
Checking fuses, DC voltage, power cable, and communication cable for indoor units.
Procedure to check temperature sensors by monitoring values via "VIEW MODE".
Procedure to check EEV step values using "VIEW MODE" on the outdoor PCB.
Reference to checking and testing operations for pipe matching.
Procedure to diagnose major parts, specifically the indoor unit motor.
Guidelines for choosing an optimal installation location for the indoor unit.
Guidelines for choosing an optimal installation location for the outdoor unit.
Guidelines for using the remote control unit effectively.
Procedure for connecting pipes and purging air from the system for specific models.
Procedure for connecting pipes and purging air from the system for specific models.
Procedure for refilling refrigerant for specific air conditioner models.
Procedure for refilling refrigerant for specific air conditioner models.
Guidelines for refrigerant adjustment based on pipe length and model specifications.
Recommended torque values for fixing flare nuts based on outer diameter.
Procedure for pump down when replacing evaporator or relocating the unit.
Procedure for pump down for specific outdoor unit models.
Explanation of how air suppliers work and their effectiveness.
Discussion on temperature, humidity, air stream, and cleanness for human freshness.
Pressure data for cooling operations with 7.5m piping for specific model combinations.
Pressure data for cooling operations with 7.5m piping for specific model combinations.
Pressure data for cooling operations with 17.5m piping for specific model combinations.
Pressure data for cooling operations with 17.5m piping for specific model combinations.
Pressure data for cooling operations with 7.5m piping for specific model combinations.
Pressure data for cooling operations with 17.5m piping for specific model combinations.
Pressure data for heating operations with 7.5m piping for specific model combinations.
Pressure data for heating operations with 7.5m piping for specific model combinations.
Pressure data for heating operations with 17.5m piping for specific model combinations.
Pressure data for heating operations with 17.5m piping for specific model combinations.
| Brand | Samsung |
|---|---|
| Model | MH068FXEA4 |
| Category | Air Conditioner |
| Language | English |












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