Error code · Dishwasher

Samsung Dishwasher Three Lights Blinking: Temperature Sensor

Medium · inspection needed

Code: Blinking: Heavy, Delicate + Quick / Heavy, Delicate + Smart Auto / Smart Auto, Heavy + Delicate / Heavy, Quick+ + Smart Auto
Appliance: Dishwasher
Brand: Samsung
Warranty: 30-day workmanship

What Blinking: Heavy, Delicate + Quick / Heavy, Delicate + Smart Auto / Smart Auto, Heavy + Delicate / Heavy, Quick+ + Smart Auto means

On Samsung dishwashers without a digital display, three blinking cycle lights that include Heavy and Delicate report a temperature sensor that is failing. Typical sets are Heavy, Delicate and Quick, or Heavy, Delicate and Smart Auto, and the exact names vary by model. The control cannot trust the temperature it reads, so it stops the cycle. You may see the cycle end early, or the dishes come out poorly washed or cool.

Common causes of Blinking: Heavy, Delicate + Quick / Heavy, Delicate + Smart Auto / Smart Auto, Heavy + Delicate / Heavy, Quick+ + Smart Auto

Temperature sensor giving an unbelievable reading
Sensor wiring and connections
Whether the lights return after a power reset

✓ One safe check you can try

1. Turn the dishwasher off and switch the breaker off for 30 seconds. 2. Switch it back on. 3. Empty the dishwasher and fill the detergent drawer. 4. Run a Normal cycle. 5. If the same three lights blink, call us. Write down which three lights you saw.

! Why to stop there

A reset does not tell us whether the sensor or its wiring is the source.
We compare the sensor reading with the actual tub temperature.
We quote before we begin, in writing, and back the repair for 30 days.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Dishwasher codes

SRSamsung Dishwasher Code SR: Water Not Draining Out 1E / IE (rotary models)Samsung Dishwasher Code 1E / IE on Rotary Models: Heater Overheating Blinking: Heavy (without Express 60) / NormalSamsung Dishwasher Heavy or Normal Light Blinking: Leak Detected Blinking: Normal, Delicate + Quick / Normal, Delicate + Smart Auto / Normal, Quick+ + Smart Auto / Smart Auto, Normal + DelicateSamsung Dishwasher Normal Light Trio Blinking: Supply Water Too Hot Blinking: Normal + HeavySamsung Dishwasher Normal and Heavy Lights Blinking: Thermistor Reading Blinking: Normal, Heavy + Express 60Samsung Dishwasher Normal, Heavy and Express 60 Blinking: Thermistor Short Blinking: Normal, Heavy + Quick / Normal, Heavy + Smart AutoSamsung Dishwasher Normal, Heavy and Quick Lights Blinking: Low Water LC / LESamsung Dishwasher Code LC / LE: Leak Detected

Blinking: Heavy, Delicate + Quick / Heavy, Delicate + Smart Auto / Smart Auto, Heavy + Delicate / Heavy, Quick+ + Smart AutoBlinking: Heavy, Delicate + Quick / Heavy, Delicate + Smart Auto / Smart Auto, Heavy + Delicate / Heavy, Quick+ + Smart Auto questions

Why three lights instead of two?

Samsung uses different combinations on different models. Three lights that include Heavy and Delicate report the temperature sensor. Your model label tells us which names your lights use.

Does it mean the water is too hot?

Not necessarily. It says the reading cannot be trusted, which is separate from the water actually being hot or cold. We compare the sensor's reading with the real water temperature.

Can I still wash dishes by hand in the meantime?

Yes. The dishwasher is better left off until it is checked. Hand washing is the safer choice until the reading is verified. Doing the dishes by hand keeps your kitchen running until we have tested it.

Book a visit

Still seeing Blinking: Heavy, Delicate + Quick / Heavy, Delicate + Smart Auto / Smart Auto, Heavy + Delicate / Heavy, Quick+ + Smart Auto?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 561-5298