Quick diagnosis
What this code is telling you
Most likely trigger
heater-control fault
Recommended replacement
Dishwasher Heater / Temperature Sensor
Diagnostic path
3 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
HC indicates that the dishwasher is detecting excessive internal temperature because heater-control fault. temperature sensor fault and abnormal heating condition can produce the same code, so verify the fault before replacing components.
Possible causes
Check the most likely causes first
- 1
heater-control fault
Start here when it matches your symptoms.
- 2
temperature sensor fault
- 3
abnormal heating condition
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
Switch the dishwasher breaker off for 30 seconds and restore power.
- 2
Check 2
Empty the dishwasher, add detergent, and run a Normal cycle.
- 3
Check 3
If HC returns, stop use and request service.
Replacement part reference
Dishwasher Heater / Temperature Sensor
Exact OEM part number
Model number required
Fitment note
The exact OEM part number varies by model and production revision. Verify the complete model number before ordering.
Verify the appliance model before ordering.
Manufacturers can use different parts under the same error code across model families and production revisions.
Where do I find my model number? →FixCodeDB may earn a commission from qualifying purchases made through affiliate links.
Common questions
Quick answers for this fault
What should I check first for HC?
Start with heater-control fault. If that checks out, continue through the diagnostic sequence above rather than replacing a part based on the code alone.
Does HC always mean Dishwasher Heater / Temperature Sensor is bad?
No. An error code identifies the condition the control detected, not a guaranteed failed part. Confirm the likely causes and wiring first. The exact OEM part number varies by model and production revision. Verify the complete model number before ordering.
When should I stop troubleshooting HC 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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