The **HC1** display on a Samsung dishwasher points to **high-temperature heating error**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. Samsung appliances monitor whether a function reaches an expected state within a certain sequence. When that check fails, the control can store or display a code even though the root cause may sit elsewhere in the same circuit. The recorded display form is **HC1**. Search normalization stores it as **HC1** while preserving the characters a homeowner actually sees.
Reviewed by Ethan Mercer · Last reviewed August 17, 2026
Written by
Ethan Mercer Appliance Repair Content SpecialistPublished August 17, 2026Updated August 22, 2026Technically reviewed August 17, 2026
Content status:
Verified
Error codeHC1
ApplianceDishwasher
Quick answer
High-temperature heating error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so HC1 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
The **HC1** display on a Samsung dishwasher points to **high-temperature heating error**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. Samsung appliances monitor whether a function reaches an expected state within a certain sequence. When that check fails, the control can store or display a code even though the root cause may sit elsewhere in the same circuit. The recorded display form is **HC1**. Search normalization stores it as **HC1** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
On affected Samsung dishwasher models, heating may be weak, absent, excessive, or stop unexpectedly.
While HC1 is active, the appliance can pause when the control detects an unsafe or implausible temperature condition.
When the HC1 condition is present, drying, washing, cooking, or defrost performance can change depending on the appliance.
While HC1 is active, hC1 appears during the dishwasher function associated with high-temperature heating error.
While HC1 is active, the cycle may stop, drain, fail to fill/heat, or repeat a stage.
Why it happens
Possible causes
varies by model/region — cross-region baseline — High-temperature heating error
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
With HC1 recorded, confirm the selected cycle or cooking mode is supposed to use heat.
As an external check for HC1, verify airflow, vents, filters, water supply, or door closure when those conditions affect temperature.
A safe owner-level check is to allow the appliance to cool before any owner-accessible inspection.
As an external check for HC1, do not open energized high-voltage or heating sections.
As an external check for HC1, record the code before resetting.
The next non-invasive check is to check water supply, drain path/filter, door, detergent/suds, and visible leaks only when relevant.
Important safety warning. Stop use for active leakage near electrical parts, burning smell, or repeated breaker trips. Do not defeat leak or door-safety switches. For HC1, stop troubleshooting immediately if the symptom crosses into a safety hazard rather than a normal diagnostic condition.
Get help
When to request repair service
For HC1, the service threshold is straightforward: A returning heating/over-temperature code after external checks requires model-specific testing of sensors, heaters/ignition, relays, wiring, airflow, or control electronics. Bring the exact model number and a photo of the display so the diagnosis stays tied to the documented Samsung code.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
Resetting can clear a temporary state, not a persistent issue. If **HC1** comes back, preserve the code and move to the safe checks or model-specific service path.
Short owner-accessible checks may be reasonable when the appliance is safe. Persistent **HC1**, worsening performance, or any electrical/water/heat hazard is a reason to stop use.
No. **HC1** tells you which condition or check the control detected. The same display can result from the named component, its wiring, a connector, a supply/airflow/water condition, or the control that reads it.
The same-looking code can be reused on another Samsung appliance family or reformatted by region/model year. Match the appliance type and exact model before applying a meaning. This page therefore keeps **Dishwasher HC1** separate from same-looking codes used by other Samsung appliance families.
