Written by
Lena Hartwell Appliance Care EditorPublished October 27, 2026
VERIFIED
Error codeF8 / F-8
ApplianceDishwasher
Two boards, one data link
The control board sits in the door and acts as the master micro. The power board sits in the base as slave 1 micro. F8 (F-8) says the data passing between them has failed.
Most common cause
The manual names a wet connector first. The low-voltage connector joining door and base has four wires:
ground
5 VDC power
data
neutral
Which dishwashers
Legacy EDW and IDW 24-inch units, the Epicure and Distinctive series.
What owners should do
Turn the electrical supply off at the breaker.
Do not open the connector. Boards and wiring are for a technician to check.
Nearby codes
F7 is the EEPROM failure and F9 is the WPS sensor label.
Dishwasher repair in San Francisco
For an older Dacor in San Francisco or elsewhere in the Bay Area, call (415) 687-5926. Say F8, add the model number, or begin with Dacor dishwasher repair.
Model compatibility: Dacor reuses codes across series and model years, so F8 / F-8 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
F8 is a communication failure, a data error between control board and power board, most often from a wet low-voltage connector.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Dacor appliance?
Book a specialist visit for a clear estimate and approval before any repair.
3C is a functional check of the pump on Modernist and Heritage 24-inch dishwashers. The manual says to power the unit off, restart it and then call a technician.
4C asks you to confirm that water reaches a Modernist or Heritage 24-inch dishwasher. Check the valve, the supply and the inlet line for freezing or clogging.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your Dacor appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
