When the indicator on your indoor unit starts blinking, the first step is to identify the error code. In most instances, this is not due to a product defect. However, certain situations may require the expertise of an authorized technician. Review the cases and instructions provided below. If the error codes persist, reach out to Shymon Samsung Appliance repair Service for professional assistance and repairs.
Samsung’s air conditioning solutions prioritize comfort and efficiency. The Wind-Free™ technology, available in some models, ensures even cooling without direct wind by dispersing cool air through thousands of micro air holes. This results in comfortable cooling without the unpleasant feeling of cold drafts. The Digital Inverter Boost technology ensures that the air conditioners are energy efficient and maintain the desired temperature without frequently turning on and off. The in-built air purification system, which includes an easy-to-clean washable filter, captures dust and harmful pollutants, ensuring cleaner and healthier air indoors. With the SmartThings app, users can control and monitor their AC’s operations remotely, enhancing convenience.
| Displayed error codes | Cause | Solution |
|---|---|---|
| CF | Filter cleaning reminder Filter reset indicator |
Clean or replace the inner filters of the indoor unit |
| CL | Auto clean indicator (Indoor unit produces odors) |
Operate the Auto clean function to remove the odors |
| dF | Automatic Defrost function (During the Defrost function or steam is produced on the outdoor unit) |
This is not a manufacturing defect (When the Heat mode is off, this function will be turned off.) |
| 4E (4C) | The 4E (4C) error code indicates that the washing machine has detected a problem with the water supply. The most common reason for this error is a blocked or kinked water supply hose. | Check the water hose Check the water supply Clean the water hose mesh filter Clean the dispenser drawer |
| Displayed error codes | Cause | Solution |
|---|---|---|
| E1 or 21 | Defective of the room temperature sensor | Contact authorized Samsung service center |
| E1 or 22 | Defective of the heat exchanger temperature sensor | Contact authorized Samsung service center |
| E1 or 54 | Defective of fan motor or capacitor | Contact authorized Samsung service center |
| E1 or 63 | Defective of the EEPROM | Contact authorized Samsung service center |
| E5 | – Short of indoor heat exchanger sensor – Indoor heat exchanger sensor open |
Check the exchanger sensor departure of the indoor unit (Sensor replacement may be needed) |
| E6 | – Short of the outdoor heat exchanger sensor – Outdoor heat exchanger sensor open |
Check exchanger sensor departure of the outdoor unit (Sensor replacement may be needed) |
| E7 | – Short of the heater temperature sensor – Heater temperature sensor open |
Check of the heater temperature sensor departure (Sensor replacement may be needed) |
Samsung Split System Air Conditioning AC Error Codes
Main INDOOR Error Codes That Display On Samsung Split System Air Conditioners:
| ERROR/MODE | DESCRIPTION |
|---|---|
| E101 / E102 | Communication Error (Indoor-Outdoor) |
| E121 | ROOM TH sensor error |
| E122 | INDOOR MID, INDOOR IN PIPE-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 L Limit Trip Error |
| E464 | IPM Over Current (O.C) Error |
| E465 | Comp V Limit/L 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 |
Samsung Split System Air Conditioning Indoor Unit Error Code Chart
Samsung Split Air Conditioner Error Fault Code – E101 / E102
Definition Of Error Code: Communication Error (Indoor Outdoor)
Samsung Split Air Conditioner Error Fault Code – E422
Definition Of Error Code: Outdoor unit EEV close 1 self diagnosis error
Samsung Split Air Conditioner Error Fault Code – E121
Definition Of Error Code: ROOM TH sensor error
Samsung Split Air Conditioner Error Fault Code – E122
Definition Of Error Code: INDOOR MID, INDOOR IN PIPE-TH sensor error
Samsung Split Air Conditioner Error Fault Code – E154
Definition Of Error Code: Fan Error (Indoor)
Samsung Split Air Conditioner Error Fault Code – E162
Definition Of Error Code: EEPROM Error (Indoor)
Samsung Split Air Conditioner Error Fault Code – E163
Definition Of Error Code: Option Error
Samsung Split Air Conditioner Error Fault Code – E203
Definition Of Error Code: Time out Comm. (Inv Micom ⇔ Main Micom)
Samsung Split Air Conditioner Error Fault Code – E221
Definition Of Error Code: OUT-TH (Outdoor Temperature) Sensor Error
Samsung Split Air Conditioner Error Fault Code – E231
Definition Of Error Code: CON-TH (Cond Temperature) Sensor Error
Samsung Split Air Conditioner Error Fault Code – E251
Definition Of Error Code: DIS-TH (Discharge Temperature) Sensor Error
Samsung Split Air Conditioner Error Fault Code – E416
Definition Of Error Code: DIS-TH (Discharge Temperature) Over Error
Samsung Split Air Conditioner Error Fault Code – E422
Definition Of Error Code: EEV or Valve Close error – Self diagnosis
Samsung Split Air Conditioner Error Fault Code – E440
Definition Of Error Code: Prohibit Operation Condition Error (Heating)
Samsung Split Air Conditioner Error Fault Code – E441
Definition Of Error Code: Prohibit Operation Condition Error (Cooling)
Samsung Split Air Conditioner Error Fault Code – E458
Definition Of Error Code: Fan Error (Outdoor)
Samsung Split Air Conditioner Error Fault Code – E461
Definition Of Error Code: Comp Starting Error
Samsung Split Air Conditioner Error Fault Code – E462
Definition Of Error Code: AC Input L Limit Trip Error
Samsung Split Air Conditioner Error Fault Code – E464
Definition Of Error Code: IPM Over Current (O.C) Error
Samsung Split Air Conditioner Error Fault Code – E465
Definition Of Error Code: Comp V Limit/L Limit Error
Samsung Split Air Conditioner Error Fault Code – E466
Definition Of Error Code: DC-Link Voltage Under/Over Error
Samsung Split Air Conditioner Error Fault Code – E467
Definition Of Error Code: Comp Wire Missing Error
Samsung Split Air Conditioner Error Fault Code – E468
Definition Of Error Code: Current Sensor Error
Samsung Split Air Conditioner Error Fault Code – E469
Definition Of Error Code: DC-Link Voltage Sensor Error
Samsung Split Air Conditioner Error Fault Code – E470
Definition Of Error Code: EEPROM Data Error (no data)
Samsung Split Air Conditioner Error Fault Code – E471
Definition Of Error Code: EEPROM Data Error (Main Micom ⇔ Inv Micom)
Samsung Split Air Conditioner Error Fault Code – E474
Definition Of Error Code: Heatsink Sensor Error
Samsung Split Air Conditioner Error Fault Code – E483
Definition Of Error Code: Overvoltage Protection Error
Samsung Split Air Conditioner Error Fault Code – E484
Definition Of Error Code: PFC Overload Error
Samsung Split Air Conditioner Error Fault Code – E485
Definition Of Error Code: Input Current Sensor Error
Samsung Split Air Conditioner Error Fault Code – E488
Definition Of Error Code: AC Input Voltage Sensor Error
Samsung Split Air Conditioner Error Fault Code – E500
Definition Of Error Code: Heatsink Over Temperature Error
Samsung Split Air Conditioner Error Fault Code – E554
Definition Of Error Code: Gas Leak Error
Outdoor detailed inspection procedure
| No | Procedure | Inspection Method | Cause |
|---|---|---|---|
| 1 | Plug out and pull the PCB out of the control box Check the PCB fuse (Wait 3 minutes after power off) |
1) Is 1st fuse disconnected? | – Over current – AC part and pattern short of Outdoor PBA |
| 2 | Check the Wiring | 1) Is the Compressor wire connected clockwise? 2) Is the Reactor wire connected normal? 3) Is the Fan wire connected normal? 4) Is the 4-way wire connected normal? 5) Is the sensor wire connected normal? 6) Is the EEV wire connected normal? |
– Wrong assembly – Installation(service) condition is bad |
| 3 | Supply power and operate the set (Use Remote-control, button in indoor set) |
Check the power voltage 1) Is the voltage between Terminal block L-N 200Vac~240Vac? |
– Power cord is faulty, Wrong Power cable Wiring |
| 2) Is the C006 voltage 200Vac~240Vac? | – Fuse open – L.N.F.1.F.2 wire wrong wiring (Terminal Block-PBA) |
||
| 3) Is the CN150 voltage 200Vac~240Vac? | – Power circuit is faulty – Load short |
||
| 4) Is the PFC050 (#26+#27) voltage 200Vac~240Vac after 3 minutes later? 5) Is the CE101 voltage 280Vdc~320dc after 3 minutes later? |
– Fuse open – L.N.F.1.F.2 wire wrong wiring (Terminal Block-PBA) – PTC020 open – RY021, RY022 is faulty – Outdoor Micom(I/C201) error – PFC050 is faulty – Reactor wire is wrong connection – Power circuit is faulty, Load short – BLDC Fan motor error |
||
| 4 | Check the LED lamp display | 1) Normal: RED on, GRN blink, YEL off 2) Abnormal: All off, check no power Abnormal display: check error mode |
– F1,F2 wire wrong wiring – Outdoor PBA is faulty |
Samsung Split System Air Conditioning Error Inspection Outdoor Unit
| No | Operation of air conditioner | Explanation |
|---|---|---|
| 1 | The OPERATION indication LED (BLUE) blinks when a power plug of the indoor unit is plugged in for the first time. | It indicates power is on. The LED stops blinking if the operation ON/OFF button on the remote control unit is pushed. |
| 2 | In a COOL operation mode, the compressor does not operate at a room temperature higher than the setting temperature that the INDOOR FAN should operate. [In case of heat pump model] In a HEAT operation mode, the compressor does not operate at a room temperature lower than the setting temperature that indoor fan should operate. |
It happens after a delay of 3 minutes when the compressor is re-operated. The same phenomenon occurs when power is on. As a phenomenon that the compressor is re-operated after a delay of 3 minutes, the indoor fan is adjusted automatically with reference to a temperature of the air blown. |
| 3 | Fan speed setting is not allowed in DRY mode. | The speed of the indoor fan is set to LL in DRY mode. Fan speed is selected automatically in AUTO mode. |
| 4 | Compressor stops operation intermittently in DRY mode. | Compressor operation is controlled automatically in DRY mode depending on the room temperature and humidity. |
| 5 | Timer LED (ORANGE) of the indoor unit lights up and the air conditioner does not operate. | Timer is being activated and the unit is in ready mode. The unit operates normally if the timer operation is cancelled. |
| 6 | The compressor stops intermittently in a COOL mode or DRY mode, and fan speed of the indoor unit decreases. | The compressor stops intermittently or the fan speed of the indoor unit decreases to prevent inside/outside air from freezing, depending on the inside/outside air temperature. |
| 7 | [In case of heat pump model] Compressor of the outdoor unit is operating although it is turned off in HEAT mode. |
When the unit is turned off while de-ice is activated, the compressor continues operation for up to 9 minutes (maximum) until the de-icing is completed. |
| 8 | [In case of heat pump model] The compressor and indoor fan stop intermittently in HEAT mode. |
The compressor and indoor fan stop intermittently if the room temperature exceeds a setting temperature in order to protect the compressor from overheated air in HEAT mode. |
| 9 | [In case of heat pump model] Indoor fan and outdoor fan stop operation intermittently in HEAT mode. |
The compressor operates in a reverse cycle to remove exterior ice in HEAT mode, and the indoor fan and outdoor fan do not operate intermittently for within 20% of the total heater operation. |
Samsung Split System Air Conditioning General Troubleshooting
| Classification | Class | Description |
|---|---|---|
| Cooling | Q | The cooling is weak. |
| A | When it is hot outside, its cooling capacity decreases due to the increase of the ambient temperature. When the dust filter gets blocked or warm outside air gets in, the cooling capacity will decrease. So, make sure to clean the dust filter frequently, prevent heat loss by closing the doors and insulate the cooling area by using curtains, blinds, shades, or window tinting. | |
| Q | The cooling is good generally. But, it gets weak when it is considerably hot. | |
| A | It occurs when the outdoor unit is exposed to direct sunlight and heated-up air is not ventilated well. So, set up a sunblind over the outdoor unit and keep stuff away from the unit to increase ventilation. When the cooling capacity decreases during a heat wave, clean the heat exchanger of the outdoor unit or spray some cold water to the heat exchanger to increase cooling capability. | |
| Q | The cooling is weak. Does it need refrigerant charging? | |
| A | It is not correct to charge refrigerant regularly. Except when you have moved several times or the connection pipes are broken, the refrigerant does not run low. So, when refrigerant is additionally charged, it could be costly and cause a product’s failure. When the refrigerant leaks, all of it will escape in a short time resulting in cooling failure and no water coming out of the drain hose. So, if water comes out from the drain hose, it indicates normal operation, and it does not need refrigerant charging. | |
| Q | It fails to do cooling. | |
| A | When the air conditioner is set to ventilation or the desired temperature is set higher than the current temperature, it fails to cool. In this case, select cooling or set the desired temperature lower. | |
| Leakage | Q | It floods the floor. |
| A | Place the drain hose properly. If not placed properly, the drain water would flow back and flood the floor. So, straighten out the drain hose for the water to be drained well. | |
| Q | Water drips at the drain connection (service valve) of the outdoor unit. | |
| A | When a glass bottle is taken out of the refrigerator, moisture gets condensed on its surface due to the temperature differences. The same principle applies to the air conditioner. When cold refrigerant goes through the copper tube, moisture gets condensed on the surface of the tube and the connection areas. To prevent the water condensation, the pipes are insulated. But, if the connection areas of the outdoor unit are not insulated for maintenance or repair, and water gets condensed due to the temperature differences, it drips down. Generally, it evaporates right away, but in muggy days, put a water pan on the floor. | |
| Q | It leaks even though a drain pump is used. | |
| A | It occurs when the drain pump is plugged out or is out of order. Check the power of the drain pump and the position of the drain hose, and when the pump is faulty, contact the drain pump manufacturer. Samsung Electronics does not manufacture drain pumps, so we are not able to correct drain pump problems. | |
| Smells | Q | Whenever the air conditioner is turned on, it irritates my eyes and gives me a headache. |
| A | There are no components in the air conditioner irritating the eyes and sending out chemical smells. But, when the air conditioner is turned on, other smell sources are sucked into the air conditioner and get out of it. So, find and root out the smell sources. Generally, it occurs at an interior renovated place, a pharmacy, a gasoline handling place, a tire shop, a second-hand book shop, or an electronic component handling place. When its chemical or musty smells are sucked in and sent out, it can be misled that the air conditioner generates them. |
Samsung Split System Air Conditioning General Troubleshooting 2
| Classification | Class | Description |
|---|---|---|
| Smells | Q | Whenever the air conditioner is turned on, it stinks. |
| A | When there are no components in the air conditioner sending out chemical smells, but other smell sources are sucked into the air conditioner when turned on, bad smells may result. It could be from sources such as a diaper bin, shoe shelf, socks bin, or interaction with dust and moisture when glass cleaners or air fresheners are used. These kinds of organic materials can be noxious to human bodies. Avoid using such products. | |
| Q | Whenever the air conditioner is turned on, it smells sour. | |
| A | If the room is recently papered, paste smells can be sucked in. Also, sweat from activities like basketball can evaporate and be sucked into the air conditioner, resulting in bad smells. Root out these sources or refresh the room frequently. | |
| Q | Whenever the air conditioner is turned on, it smells musty. | |
| A | This happens due to improper keeping of the product after use. The product must be dried inside with proper ventilation to avoid mold. Open the windows and use the ventilation function to get rid of the saturated smells inside. | |
| Q | Whenever the air conditioner is turned on, it sends out bad smells such as stale smells. | |
| A | It occurs when there are pets in the house. Their smells stay in place and circulate when the air conditioner is turned on. Find and eliminate the cause or refresh the room. | |
| Q | It sends out bad smells. | |
| A | If the air filter is dirty, it could send out bad smells. Clean the filter and ventilate the room while operating the ventilation function. | |
| Operation | Q | It won’t start. |
| A | There may be a power failure, or it could be unplugged. Check if the power distribution panel is switched off. | |
| Q | It goes off during operation. | |
| A | When the hot air doesn’t escape properly, it goes off during operation. Ensure the outdoor unit is not covered or blocked by a panel, window, or other obstacles. | |
| Q | It generally works properly. But, when it’s considerably hot, it goes off during operation. | |
| A | If the outdoor unit is exposed to direct sunlight and the hot air doesn’t escape properly, use a sunblind or spray cold water on the heat exchanger to increase cooling capacity. | |
| Q | The remote controller won’t operate. | |
| A | Replace the batteries or remove obstacles blocking the receiver. Avoid intensive light near the controller. |
Samsung Split System Air Conditioning General Troubleshooting 3
| Classification | Class | Description |
|---|---|---|
| Installation | Q | Who installs the air conditioner? (Relocation/Re-installation) |
| A | When relocating or re-installing the air conditioner, make sure to contact Samsung Electronics Service Center or Authorized Service Agent and have them do the job. (If not, it could cause personal injury or product damage.) The cost for the relocation/re-installation of the air conditioner is subject to the customer’s expense. There is a cost table, but our service engineer needs to visit to total up the cost correctly. When you move in, make sure to contact Samsung Electronics Service Center or Authorized Service Agent in advance to streamline the process. |
|
| Q | Is it possible to install the outdoor unit outside? | |
| A | It is possible to install it at a designated place in the apartment or on the rooftop nearby. But, it’s illegal to hang an angled iron case with the outdoor unit in it outside the apartment. Also, it is illegal obstructing passers-by with the outdoor unit installed outside. | |
| Q | What can be done to install the outdoor unit facing the road because it is a commercial building? | |
| A | The following is an excerpt from the building code going into effect from JUNE 1st 2005. “The exhaust pipe of a cooling or ventilation facility installed in a building adjacent to the streets of commercial or residential areas shall be installed higher than 2 m to prevent the exhaust air from blowing directly to passers-by and the current facilities shall be corrected by MAY 31st 2005.” So, please install it higher than 2 m or blow the hot exhaust air directly to passers-by. | |
| Q | What about installing a windscreen during installation not to blow hot air directly to passers-by? | |
| A | When the hot air from the front of the outdoor unit is blocked, the product’s performance will be affected and it will fail to operate properly. So, keep it at least 300mm away from its surroundings and give it good ventilation. |
Samsung Split System Air Conditioning General Troubleshooting And Installation
| LED Pattern | YEL | GRN | RED | Description |
|---|---|---|---|---|
| ⚪ | ⚫ | ⚪ | Power off/VDD NG | |
| ⚫ | ⚫ | ⚪ | Power ON reset (1 sec) | |
| ⚫ | ⚪ | ⚫ | Normal Operation | |
| ⚫ | ⚪ | ⚫ | Abnormal Communication (Indoor ⇔ Outdoor) | |
| ⚪ | ⚪ | ⚫ | IPM Over Current (O.C) Error | |
| ⚪ | ⚫ | ⚫ | Comp Starting Error | |
| ⚫ | ⚫ | ⚫ | EEPROM Data Error (no data) | |
| ⚫ | ⚪ | ⚪ | DC-Link Voltage Under/Over Error | |
| ⚪ | ⚫ | ⚪ | PFC Over Load Error | |
| ⚪ | ⚫ | ⚪ | Over Voltage Protection Error | |
| ⚪ | ⚫ | ⚫ | OUT-TH (Outdoor Temperature) Sensor Error | |
| ⚫ | ⚪ | ⚫ | DIS-TH (Discharge Temperature) Over Error | |
| ⚪ | ⚫ | ⚫ | DIS-TH (Discharge Temperature) Sensor Error | |
| ⚪ | ⚪ | ⚫ | Current Sensor Error | |
| ⚪ | ⚪ | ⚫ | Heatsink Sensor Error | |
| ⚪ | ⚪ | ⚫ | Input Current Sensor Error | |
| ⚪ | ⚪ | ⚫ | Comp V Limit/L Limit Error | |
| ⚪ | ⚪ | ⚫ | Heatsink Over Temperature Error | |
| ⚫ | ⚫ | ⚫ | CON-TH (Cond Temperature) Sensor Error | |
| ⚪ | ⚫ | ⚫ | Time out Comm. (Inv Micom ⇔ Main Micom) | |
| ⚪ | ⚪ | ⚫ | Fan Error (Outdoor) | |
| ⚪ | ⚫ | ⚫ | EEPROM Data Error (Main Micom ⇔ Inv Micom) | |
| ⚪ | ⚪ | ⚫ | Comp Wire Missing Error | |
| ⚫ | ⚫ | ⚪ | Prohibit Operation Condition Error (Heating) | |
| ⚫ | ⚪ | ⚫ | Prohibit Operation Condition Error (Cooling) | |
| ⚪ | ⚫ | ⚫ | DC-Link Voltage Sensor Error | |
| ⚪ | ⚫ | ⚫ | AC Input Voltage Sensor Error | |
| ⚫ | ⚫ | ⚪ | AC Input L Limit Trip Error | |
| ⚪ | ⚫ | ⚫ | Gas Leak Error | |
| ⚫ | ⚫ | ⚪ | EEV or Valve Close error – Self diagnosis | |
| ⚪ | ⚫ | ⚫ | Test Operation at Cooling Mode | |
| ⚫ | ⚫ | ⚫ | Test Operation at Heating Mode |
⚫ LED ON, ⚪ LED OFF, ◐ LED BLINKING
