Samsung E1
On a Samsung air conditioner, E1 means the indoor room temperature sensor (thermistor) is shorted, open or def…
Air Conditioner Error Codes
AC error codes, meaning and fixes across every brand.
Samsung E5
E5 on a Samsung AC means the indoor heat exchanger sensor is open or short. The sensor usually needs inspectio…
Samsung E6
E6 on a Samsung AC indicates a defective outdoor heat exchanger sensor (open or short). The sensor needs check…
Samsung E7
E7 on a Samsung AC means the heater temperature sensor is open or short, so it cannot read the heat exchanger…
Samsung E4
E4 on a Samsung AC means the outdoor discharge pipe temperature is too high. The unit shuts down to protect th…
Samsung E101
E101 on a Samsung AC means the indoor unit lost communication — usually a loose connection or damaged cable ar…
Samsung E102
E102 on a Samsung AC means faulty communication at the outdoor unit — commonly a loose connection between indo…
Samsung CF
On a Samsung AC, CF is not an error — it is a filter-cleaning reminder. Clean the indoor air filter and the co…
Samsung dF
dF on a Samsung AC means the unit is in defrost mode — normal in heating. It pauses briefly to melt frost on t…