Quick diagnosis
What this code is telling you
Most likely trigger
hot-water supply above specification
Recommended replacement
Water Temperature / Sensor System
Diagnostic path
4 ordered checks
Part fit
Exact model number required
Safety first
Before opening the appliance
Disconnect electrical power before removing panels or handling internal components. Do not bypass safety devices or perform live electrical testing unless you are qualified to do so.
Read the full safety disclaimerRoot cause
Why the control reported this error
3E means the incoming water supply is too hot for the dishwasher because hot-water supply above specification. water-heater setting too high and temperature sensing issue can produce the same code, so verify the fault before replacing components.
Possible causes
Check the most likely causes first
- 1
hot-water supply above specification
Start here when it matches your symptoms.
- 2
water-heater setting too high
- 3
temperature sensing issue
Diagnostic sequence
Work through these checks in order
Stop when you find the fault. Do not perform a step that requires skills or live testing you are not qualified to do.
- 1
Check 1
Verify the hot-water supply is not set above 176°F.
- 2
Check 2
Allow water temperature to normalize if it is excessive.
- 3
Check 3
Restart the dishwasher.
- 4
Check 4
If the supply temperature is normal and 3E returns, request service.
Recommended next step
Troubleshoot before buying a part
This code does not point to a replacement part as the first action.
Follow the diagnostic sequence above first. Supply problems, maintenance conditions, settings, airflow restrictions, or temporary control states can often trigger this code without a failed component.
If the code returns after the listed checks, use the complete model number and manufacturer documentation before ordering anything.
Common questions
Quick answers for this fault
What should I check first for 3E?
Start with hot-water supply above specification. If that checks out, continue through the diagnostic sequence above rather than replacing a part based on the code alone.
Do I need to buy a part for 3E?
Usually not as the first step. This code is commonly tied to a setting, supply issue, maintenance condition, airflow restriction, or temporary operating state. Complete the diagnostic checks before considering parts.
When should I stop troubleshooting 3E myself?
Stop if the next step requires live electrical testing, sealed-system work, gas or combustion service, or any procedure outside your training. Disconnect electrical power before removing panels or handling internal components. Do not bypass safety devices or perform live electrical testing unless you are qualified to do so.
Manufacturer reference
Verify against the official support source
FixCodeDB summarizes the fault in plain language. For model-specific instructions, confirm the guidance with the manufacturer and your appliance manual.
Samsung Dishwasher Error Codes — Samsung Support →Was this useful?
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