Error code · Dishwasher

Samsung Dishwasher Code 3E: Incoming Water Too Hot

Samsung dishwashers in the US with a digital display show 3E when the incoming water is too hot. The control reads the temperature of the water coming from your supply and finds it above what the…

Medium · inspection needed

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Code: 3E
Appliance: Dishwasher
Brand: Samsung
Warranty: 30-day workmanship

What 3E means

Samsung dishwashers in the US with a digital display show 3E when the incoming water is too hot. The control reads the temperature of the water coming from your supply and finds it above what the dishwasher accepts, so it shows the code instead of starting to fill. No model is named, because the code applies across the brand. It is mostly about your home's hot water setting rather than the dishwasher, which is why the first checks happen at the water heater and not at the machine.

Common causes of 3E

Hot water supply temperature above 176 F
The water heater setting
Whether the supply is mixed or tempered before the dishwasher
Whether the dishwasher reads the temperature correctly once the supply is lowered

✓ One safe check you can try

1. Check that your hot water supply is not above 176 F. 2. If your water heater is set very high, lower it and let the supply settle. 3. Run the kitchen faucet until it turns cool, then restart the dishwasher. 4. Start a new cycle and watch whether 3E returns. 5. If it comes back with a normal supply temperature, call us.

! Why to stop there

If the supply is within range and 3E persists, the dishwasher's own temperature reading may be off.
We tell the difference between a hot supply and a misreading sensor before replacing anything.
A written price comes before any part is ordered, and the work is covered 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

3E3E questions

How hot can the incoming water be?

Keep the supply at or below 176 F. Anything above that is what 3E reports. Your water heater dial is the first place to look.

Can I fix 3E without a technician?

Many times, yes. If lowering the water heater setting clears the code, no repair is needed. If it stays after the supply is cooler, the dishwasher's reading needs testing.

Is a hot supply bad for the dishwasher?

Water well above the accepted range can stress the machine, which is why the control stops the cycle. Lower the supply temperature rather than ignoring the code.

Book a visit

Still seeing 3E?

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

(713) 561-5298