Samsung Air Conditioner Error E1 – Meaning, Causes & How to Fix
Indoor temperature sensor error – the room temperature sensor (thermistor) in the indoor unit is malfunctioning or disconnected.
Expert Verified
Reviewed by a Certified Electrical Engineer & Licensed Technician
Official Meaning
Indoor temperature sensor error – the room temperature sensor (thermistor) in the indoor unit is malfunctioning or disconnected.
Real-World Causes
- 1Refrigerant leak or low charge
- 2Compressor failure or overload
- 3Fan motor failure (indoor or outdoor unit)
- 4Frozen evaporator coil
- 5Capacitor failure
- 6Thermistor or temperature sensor fault
- 7Control board or communication error
Symptoms
Look for these signs to confirm error E1 on your Samsung Air Conditioner:
- Unit not cooling or heating effectively
- Ice forming on indoor or outdoor unit
- Unusual noises from compressor or fan
- Water leaking from indoor unit
- Unit short cycling (turning on and off frequently)
- Error code displayed on unit or remote
DIY Fix (Safe)
- 1Clean or replace the air filter (check monthly)
- 2Check thermostat settings and battery
- 3Clear debris and obstructions around the outdoor unit
- 4Ensure all vents and registers are open and unblocked
- 5Reset the unit by switching off at the breaker for 5 minutes
- 6Check that the condensate drain line is not clogged
Professional Action Required
- 1Check refrigerant levels and inspect for leaks
- 2Test compressor and capacitor with proper equipment
- 3Inspect indoor and outdoor fan motors
- 4Clean evaporator and condenser coils thoroughly
- 5Check electrical connections and control board
Additional Context
Frequently Asked Questions
What does Samsung Air Conditioner error E1 mean?
What causes Samsung Air Conditioner E1 error?
How do I fix Samsung Air Conditioner error E1?
Related Error Codes
Other Samsung Air Conditioner Errors
Similar Errors on Other Samsung Devices
Temperature sensor error – the dishwasher's water temperature sensor is not responding or is returning readings outside the acceptable range
Temperature sensor error – the dryer's thermistor is returning readings outside the expected range, preventing the dryer from accurately monitoring air temperature
Temperature sensor error – the thermistor is returning out-of-range readings or the temperature is rising abnormally fast or not at all
Fridge defrost sensor error – the defrost temperature sensor in the refrigerator compartment is malfunctioning or out of range
Heater error – the washer's water heating element is not functioning correctly
The appliance control system detected a condition indicating temperature sensor fault – thermistor readings are outside expected range
About the Author
Technical Review Team
Reviewed by certified appliance technicians with 10+ years of Samsung repair experience. Every error code is verified against manufacturer service manuals and real-world repair data.