Samsung E1 Error Code – Indoor Temperature Sensor Error

Air Conditioner · HIGH Severity

HIGH severity Air Conditioner Model: Samsung Wind-Free 18000 BTU

What This Error Means

Indoor room temperature sensor (thermistor) failure or short circuit

Diagnostic & Repair Steps

Power Cycle Unit
Turn off the AC at the circuit breaker. Wait 5 minutes, then turn it back on. Check if error clears. 🔧 None

RESET ~5 min

Locate Indoor Sensor
Open the front panel of the indoor unit. The temperature sensor is a small probe near the evaporator coil, connected by a thin wire. 🔧 Screwdriver, flashlight

INSPECT ~10 min

Check Sensor Connector
Disconnect and reconnect the sensor connector on the PCB. Look for corrosion, bent pins, or loose connections. 🔧 Needle-nose pliers

CHECK ~5 min

Measure Sensor Resistance
Using a multimeter set to Ohms, measure resistance across sensor terminals. At 25C should read approximately 10k-Ohm. Refer to service manual for temperature-resistance table. 🔧 Digital multimeter ⚠️ Disconnect power before measuring sensor resistance

TEST ~15 min

Replace Sensor
If resistance is out of range (open circuit or short), replace the NTC thermistor sensor. Order part using the model number. 🔧 Soldering iron or connector

REPLACE ~20 min

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