What 3C means on your Dacor dishwasher (dacor dishwasher 3c)
Dacor dishwasher 3c is a pump operation check on the Modernist/Heritage 24″ dishwasher, distinct from 5C, which is specifically the drain-side check. Where 5C fails on a detergent test of the drain function, 3C means the main PCB’s broader check of pump operation, most likely the wash circulation pump rather than the drain pump, has not confirmed the pump is running correctly. This is the Samsung-era counterpart to the Legacy EDW/IDW’s f-2 circulation-pump failure, though the two use entirely different sensing methods and share no code string.
Symptoms
The list below is how 3C announces itself on a Dacor dishwasher, and how it differs from the dishwasher problems people confuse it with.
- 3C appears during the wash phase of a cycle, after the fill has completed.
- Little or no motor hum is heard from the base of the dishwasher during what should be active circulation.
- Dishes come out with visible food residue if the circulation pump was not actually running during the cycle.
- The problem can be intermittent, appearing on some cycles and not others, if the pump connection is marginal.
- A rattling or grinding sound from the pump area, rather than silence, may accompany 3c if debris is involved.
Common causes
Any of the following can leave a Dacor dishwasher in this state, and telling them apart on the dishwasher decides whether a part is needed at all.
- Circulation pump motor failure — the pump has failed or is running at reduced capacity.
- Seized pump impeller — debris jamming the pump prevents normal operation even with a healthy motor.
- Wiring failure to the pump — a loose or corroded connector interrupts power or feedback to the main PCB.
- Main PCB problem — the board’s own pump-monitoring circuit is misreading a healthy pump as failed.
- Debris caught in the pump housing — a piece of glass, bone, or utensil fragment obstructing the impeller.
Troubleshooting steps you can try
Try these first on the dishwasher: they are ordered so the safest and likeliest fix for a Dacor dishwasher comes before anything needing tools or training.
- Listen for motor hum from the base of the dishwasher during the wash phase of a cycle.
- Power-cycle the dishwasher at the breaker and run a short cycle to see whether 3c recurs at the same point.
- Check for and remove any visible debris from the filter area at the bottom of the tub, which can sometimes reach the pump.
- Note whether the problem happens on every cycle or intermittently.
- Avoid running additional cycles back to back while 3c is occurring, since the pump will not confirm regardless.
Parts a technician may replace
For this problem, the circulation pump, pump motor wiring, and main pcb on your Dacor dishwasher are the components in scope. Which of them has failed on the dishwasher is established on site before any dishwasher part is sourced.
When to call a technician
If no motor hum is heard and the filter area is clear of debris, the circulation pump or its wiring needs testing by a technician. This rates Medium on a dishwasher, so take your time — but do not keep clearing 3C on the dishwasher without finding out why. Independent service on a Dacor dishwasher means genuine OEM or trusted-supplier parts and a 30-day warranty on our workmanship.
Related help and Dacor resources
Where the 3C condition persists on a dishwasher, stop retrying and arrange service. See also our dishwasher repair guides, our service areas, and www.dacor.com for the dishwasher specification.
