Samsung Air Conditioner
Samsung AC E1 error
Indoor room temperature sensor fault / Indoor coil (evaporator) temperature sensor fault / Indoor fan motor fault / Memory (EEPROM) error — indoor unit board
Try a reset once. If it comes back, a trained technician should repair it.
Meaning depends on your model
Different Samsung models use this code for different faults. The most commonly reported meanings are below. Check the model number on the sticker of your unit and your user manual to know which one applies.
Possible meaning 1Indoor room temperature sensor fault
Needs a technicianThe control board is getting a wrong reading, or no reading, from the indoor room temperature sensor. Usually the sensor, its wire or its plug is loose, damaged or has failed.
Common causes
- Loose or rusted sensor plug on the control board
- Sensor wire cut, pinched or bitten by rats
- Sensor has failed (open or short circuit)
- Less often, a fault on the control board
Try this at home first
Tick each step as you go
When to call a technician
If the code returns after a reset, a technician needs to test and usually replace the sensor. It is a common, low-cost repair.
Possible meaning 2Indoor coil (evaporator) temperature sensor fault
Needs a technicianThe control board is getting a wrong reading, or no reading, from the indoor coil (evaporator) temperature sensor. Usually the sensor, its wire or its plug is loose, damaged or has failed.
Common causes
- Loose or rusted sensor plug on the control board
- Sensor wire cut, pinched or bitten by rats
- Sensor has failed (open or short circuit)
- Less often, a fault on the control board
Try this at home first
Tick each step as you go
When to call a technician
If the code returns after a reset, a technician needs to test and usually replace the sensor. It is a common, low-cost repair.
Possible meaning 3Indoor fan motor fault
Needs a technicianThe indoor blower fan is not turning at the right speed, or its speed signal is missing.
Common causes
- Blower jammed by dirt or a loose part
- Faulty indoor fan motor or capacitor
- Loose motor plug or faulty control board
Try this at home first
Tick each step as you go
When to call a technician
If it repeats, a technician must test the motor, capacitor and board.
Possible meaning 4Memory (EEPROM) error — indoor unit board
Needs a technicianThe indoor unit board cannot read its saved settings from its memory chip (EEPROM). This is an electronic fault on the board.
Common causes
- Power surge or lightning
- Data corrupted after a power cut
- Faulty memory chip or control board
Try this at home first
Tick each step as you go
When to call a technician
If the code stays, the control board must be repaired or replaced by an authorised technician.
Safety first
Always switch off at the wall socket or MCB before touching any part. Do not open the outdoor unit, control boards or gas pipes yourself — they carry high voltage and pressure.
Frequently asked questions
What does E1 mean on a Samsung Air Conditioner?
Different Samsung models use this code for different faults. The most commonly reported meanings are below. Check the model number on the sticker of your unit and your user manual to know which one applies. Indoor room temperature sensor fault / Indoor coil (evaporator) temperature sensor fault / Indoor fan motor fault / Memory (EEPROM) error — indoor unit board.
Can I fix Samsung Air Conditioner error E1 myself?
You can try a reset first: Switch off at the wall socket or MCB for 5 minutes, then restart. If the code returns, call a technician.
Is it safe to keep using the Air Conditioner with E1?
Avoid repeated restarts; running with this fault can cause more damage.
Other Samsung AC codes
Same code on other brands
Sources
We write every explanation in our own words from these references.
- Samsung Support — Error codes on Samsung indoor unit air conditioner
- BOXT — Samsung air conditioning fault codes
- PickHVAC — Samsung mini split error codes
Last checked: 2026-10-20