Editorial & technical review
- Written by ApplianceWorth Editorial Team
- Technically reviewed by Victor — appliance technician
- Last reviewed 2026-07-01
- Applies to Samsung dishwashers
- Confidence medium
- Also displayed as HC1
- Sources Manufacturer service documentation and field-repair experience · Methodology · Report a correction
What this code means
The dishwasher did not detect the expected temperature increase after the heater was energized.
Most likely causes
- The heater is open or not receiving power
- A heater relay or control circuit has failed
- A thermistor is reporting the wrong temperature
- There is insufficient water or a loose heater connection
Safe checks for the owner
- Stop using heated cycles if dishes remain cold or the code repeats.
- Confirm that the dishwasher is filling with water before the wash begins.
- Do not perform live-voltage tests inside the dishwasher.
Estimated U.S. repair cost
$220–$430, depending on model, access, parts availability and local labor.