Samsung Washer Hot and Tap Cold, or Hot and Cool Lights Blinking: MEMS Sensor Error
Samsung washers without a digital display flag a MEMS sensor error by blinking the Hot light together with the Tap Cold or Cool light. The MEMS sensor is the motion sensor that helps the control detect…
- Code
- Hot & Tap Cold / Hot & Cool
- Appliance
- Washer
- Brand
- Samsung
- Warranty
- 30-day workmanship
What Hot & Tap Cold / Hot & Cool means
Samsung washers without a digital display flag a MEMS sensor error by blinking the Hot light together with the Tap Cold or Cool light. The MEMS sensor is the motion sensor that helps the control detect load movement and balance. When its reading is not usable, the control stops the cycle. This follows the MEMS group on numeric displays. The lights keep blinking until it clears.
Common causes of Hot & Tap Cold / Hot & Cool
- MEMS sensor reading
- Sensor wiring and connector
- Board input that receives the sensor signal
1. Shut the washer down for a few minutes. 2. Switch it on and restart the cycle. 3. Make sure the washer sits level and the load is spread evenly. 4. If the lights blink again, request service. 5. Keep the washer level while it runs; adjust the feet if it rocks.
- A restart cannot tell us whether the sensor or its connection is the cause.
- We test the sensor reading and check the connector.
- We confirm the washer is level.
Other Washer codes
What is a MEMS sensor?
It is a small motion sensor the control uses to read load movement. The blinking lights mean its reading is not usable. The lights flash until the reading returns to normal.
Can being unlevel cause it?
A washer that rocks can disturb readings. Level it first, then try again. Adjust the feet until it sits steady, then restart. If the lights return, we test the sensor itself.
Does it need a new sensor?
Not necessarily. A loose connector can give the same pattern. We test before recommending a part. If the lights keep blinking after a restart, we check the wiring first and quote any part in writing before work.
Still seeing Hot & Tap Cold / Hot & Cool?
A technician diagnoses it on site and gives you the price in writing before any work starts.