Samsung Dishwasher error code 3E
3E
What it means
High temperature water supply error - the water coming in is too hot.
Likely causes
- The hot water supply is set too hot
Safety first: switch the appliance off and unplug it (or turn it off at the circuit breaker) before you check anything. If water is involved, close the water supply valve too. Never open panels or touch internal wiring. Anything that involves gas lines, refrigerant or sealed systems, or mains-voltage wiring is a job for a professional - not a home fix.
Safe first checks
- Verify the hot water supply is not set above 176 degrees F
When to call a pro
If the hot water is not set above 176 degrees F but the error still occurs, request service from Samsung.
Repair or replace?
Try the safe checks first - many codes clear with a clean filter, a straight hose or a balanced load, and those cost nothing. If the code comes back, a service call typically costs $50-$150 for the visit and diagnosis (Angi puts an average service call at $50-$100; Sears lists a $90-$150 diagnostic fee). Get the full repair quote before you decide. If the machine is old and the quote is a large part of the price of a new one, replacing usually makes more sense than repairing.
Source: Samsung Support