How to Fix / Troubleshooting

Safety first: Unplug the washer and allow it to cool before working near the heater.

Step 1 – Access the NTC sensor:
- Remove the rear panel.
- Locate the heater assembly at the bottom of the tub; the NTC sensor is usually clipped into the heater bracket.
Step 2 – Check connection:
- Ensure the NTC connector is firmly attached and not corroded.
- Clean any oxidation and reseat the connector.
Step 3 – Test NTC resistance (advanced):
- Disconnect the NTC and measure its resistance at room temperature.
- Typical values are 20–30 kΩ; consult Arctic data for exact specs.
- A reading near 0 Ω (short) or infinite (open) indicates a faulty sensor.
Step 4 – Replace NTC if faulty:
- Release the sensor from its clip and install a new Arctic-compatible NTC.
- Reconnect the wiring and reassemble the rear panel.
If E12 persists with a good NTC and wiring, the control board may be defective and should be checked by a technician.

Washer shows E12 and may stop during heating or rinsing; sometimes associated with temperature sensing issues.

Possible Causes