What HC means on your Dacor dishwasher (dacor dishwasher hc)
Dacor dishwasher hc is a high-temperature heating check on the Modernist/Heritage 24″ dishwasher: the main PCB has flagged the heating system for running hotter than expected during a check of its heating performance. This is the Samsung-era counterpart to the Legacy EDW/IDW’s f-3 heater failure, though hc specifically concerns temperature running too high rather than a missing temperature rise, and the two run on completely separate control boards with no shared code string. A stuck relay keeping the heating element energized longer than commanded is a common underlying cause on dishwashers of this general design.
Symptoms
The signs below separate this condition on your Dacor dishwasher from other problems that present almost identically on a dishwasher.
- HC appears during or after the heated wash or sanitize portion of a cycle.
- The tub or door may feel unusually hot to the touch compared to a normal cycle.
- Plastic items in the load may show signs of warping or excess heat exposure.
- A faint hot-plastic or burning smell can accompany the problem on its first occurrence.
- The cycle may halt automatically once hc is detected rather than continuing to the next phase.
Common causes
Each cause below can produce HC on a dishwasher, and only measurement on the dishwasher itself will tell you which one you actually have.
- Stuck heater relay — the relay controlling the heating element has failed in the “on” position and cannot switch off as commanded.
- Failed temperature sensor — the sensor is under-reporting temperature, so the control keeps heating past the safe point.
- Sensor wiring failure — a loose connection produces a falsely low temperature reading that keeps the heater engaged.
- Main PCB control failure — the board itself is not responding correctly to sensor input.
- Heating element defect — a degraded element can behave unpredictably under the board’s control.
Troubleshooting steps you can try
Go down the list on your dishwasher and stop at the first step that makes you uneasy — a Dacor dishwasher is not worth an injury.
- Stop the current cycle and cut power to the dishwasher at the breaker if hc appears with the tub or door unusually hot.
- Let the unit cool fully before opening the door or handling any part near the base.
- Do not restart a heated or sanitize cycle to test whether the problem repeats.
- Check any plastic items in the load for visible warping, which can help confirm a genuine overheat occurred.
- Keep the dishwasher unplugged or the breaker off until a technician has confirmed the relay and sensor are safe.
Parts a technician may replace
The parts most often in question on a dishwasher here are the heating element, heater relay, temperature sensor, and main pcb. Which one has actually failed on your Dacor dishwasher is settled by measurement, and nothing is ordered for the dishwasher before that.
When to call a technician
HC is a heating-safety problem and should be treated as urgent — book a technician to check the relay and sensor before running another heated cycle. There is no urgency at Medium severity, yet a dishwasher that repeats HC after these checks deserves a technician’s eyes. Nobody here works for Dacor; we are an independent service, and the work we do on your dishwasher is warranted for 30 days.
Related help and Dacor resources
A dishwasher that keeps returning to this state needs eyes on it — book the dishwasher repair, or check whether we cover your area. Specifications for the dishwasher are at www.dacor.com.
