Samsung Mini Split Air Conditioner Troubleshooting Guide

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Common Problems with the Samsung Mini Split Air Conditioner

Problem Possible Causes Solutions
Air Conditioner and Remote Control Miscommunication Dead batteries; Obstructed communications Replace batteries; Direct the remote to the unit
Air Conditioner Won't Turn On Power supply issues Inspect the breaker box; Contact an electrician
Air Conditioner is Not Blowing Cold Air System set to FAN mode; AC unit is clogged, or has a faulty component Set AC to COOL; Clean and repair the unit
Fan Speed Won't Change AC is on AUTO or DRY mode; Remote control buttons are locked Switch to COOL or FAN mode; Unlock control buttons

#1 Air Conditioner and Remote Control Miscommunication

If you're clicking on the remote control, but nothing happens with your air conditioner, it is possible there is a communication error between your Samsung AC unit and the control board. Miscommunications may also happen when your indoor unit performs a different operation from what you clicked on the remote control.

Miscommunications between the air conditioner and the remote control are common among mini split types. This is often caused by a blocked remote control sensor, or may indicate that the remote control batteries are running out of power.

To troubleshoot this, simply change the batteries of your Samsung AC remote, and see if that solves the issue. Make sure the sensor is pointed directly at the indoor unit, and there are no walls or obstructing objects between the remote control sensor and your Samsung AC indoor unit for a direct communication line.

#2 Air Conditioner Won't Turn On

If the air conditioner won't turn on at all, check the power supply of your indoor and outdoor unit. Oftentimes, the problem persists due to a malfunction with your circuit breaker box, causing poor electrical flow to power your air conditioner.

Check the fuse where your Samsung split system is connected to, and notice if other devices connected to the same fuse are having the same problem. If other devices are having the same problem, it means you have an electrical issue. You will need to contact an electrician to fix electrical issues before you can get your AC unit to function properly again.

#3 Air Conditioner is Not Blowing Cold Air

First, check to see if your Samsung split system is set to a cool mode instead of a fan mode. If your air conditioner is on cool mode but still won't cool the room, you may have a problem with a clogged indoor unit, dirty condenser, or frozen air conditioner.

Cleaning your air conditioner is the first step to solving the problem. Open the housing of your air conditioner, and check for any frozen coils or dirty filters. Let the ice thaw out, and clean the filters as needed. If the issue isn't with a dirty AC, contact our technicians at Luce Aircon for a complete diagnosis.

#4 Fan Speed Won't Change

The Samsung mini split air conditioner features varying fan speeds that can be changed through the remote control. If the fan speed does not change despite clicking the buttons on the remote, you most likely have your air conditioner on the AUTO mode or DRY mode, which automatically changes the fan speed depending on the temperature and humidity in the room.

Setting your air conditioner to COOL or FAN modes will allow you to control the fan speed as necessary. If the problem continues to persist, check if your remote control batteries are dead, or if there is a miscommunication between the control board and the air conditioner, then refer to #1.

How to Reset Your Samsung Mini Split

Reset Point: Power Cord and Batteries

Resetting your Samsung Mini Split air conditioner is done at two points: the power cord, and the remote control batteries. Make sure your air conditioner is powered off before you do this. Unplug the power cord from the wall socket, and remove the batteries from the remote control. Wait 5 minutes, then plug in your power cord and place the batteries back into your remote control. Power the AC on to see if this solved some issues.

Samsung Mini Split Troubleshooting Guide

#1 Clean Your Unit

Cleaning your indoor and outdoor unit is a great way to maintain the good condition of your air conditioner. Create a cleaning schedule to clear the dust and dirt from your AC unit at least once every two weeks. Clean the filter, coils, and even the outdoor unit to maintain your HVAC system.

#2 Check Your Owner's Manual

Your owner's manual would most likely have the step-by-step solution for common AC problems. Check your owner's manual at the first notice of an issue, or if your air conditioner is displaying an error code. Your manual should have a full list of error codes that you can refer to as well.

#3 Replace Any Faulty Parts

Have an HVAC professional from Luce Aircon check your unit in case of any issues. Replace any weak or faulty parts that may have been damaged through wear and tear. Doing so will lengthen the lifespan of your air conditioner, saving you the costs of having to purchase a new air conditioning system!

#4 Routine Maintenance

Routine maintenance goes a long way in preserving the useful life of your indoor and outdoor unit. Luce Aircon offers professional maintenance that will resolve weak points in your AC system before they become bigger problems, saving you hefty costs of repairs in the future!

Common Error Codes

Error Code Meaning
E101 / E102 Communication Error (Indoor Outdoor)
E121 ROOM TH sensor error
E154 Fan Error (Indoor)
E162 EEPROM Error (Indoor)
E163 Option Error
E203 Time out Comm. (Inv Micom Main Micom)
E221 OUT-TH(Outdoor Temperature) Sensor Error
E231 CON-TH(Cond Temperature) Sensor Error
E251 DIS-TH(Discharge Temperature) Sensor Error
E416 DIS-TH(Discharge Temperature) Over Error
E422 EEV or Valve Close error-Self diagnosis
E440 Prohibit Operation Condition Error (Heating)
E441 Prohibit Operation Condition Error (Cooling)
E458 Fan Error(Outdoor)
E461 Comp Starting Error
E462 AC Input I_Limit Trip Error
E464 IPM Over Current(O.C) Error
E465 Comp V_limit/I_limit Error
E466 DC-Link Voltage Under/Over Error
E467 Comp Wire Missing Error
E468 Current Sensor Error
E469 DC-Link Voltage Sensor Error
E470 EEPROM Data Error (no data)
E471 EEPROM Data Error (Main Micom Inv Micom)
E474 Heatsink Sensor Error
E483 Over Voltage Protection Error
E484 PFC Over Load Error
E485 Input Current Sensor Error
E488 AC Input Voltage Sensor Error
E500 Heatsink Over Temperature Error
E554 Gas Leak Error

*See our full list of Samsung air conditioner error codes here.

Maintaining Your Samsung Air Conditioner

Samsung air conditioners require regular maintenance to stay durable, and as long as the indoor and outdoor units are properly maintained, your Samsung air conditioner should last you for decades.

Check out our article on Friedrich aircon error codes.

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