Dacor Wall Oven C72 Error Code

C72 COMM ERROR on a Dacor wall oven is a communication failure: the logic board and the relay boards have not talked to each other for at least 6 seconds. Both boards keep trying. The logic board looks for the relay board, and the relay board keeps sending reset commands.

Ovens it covers

The Dacor Wall Oven Service Manual covers 27-inch and 30-inch single and double ovens with touch-glass control. The extract does not name the series.

What happens

If the fault lasts, the manual calls it a fatal error after 60 seconds. The power board resets the logic board every few seconds for that minute, the cooling fan runs on high speed, and no oven functions are available until communication returns. When it does, the oven reboots and works again, which is why the manual calls the error reversible.

What to do

• If the code shows but the oven works, call for service to report it and keep using the oven.
• If the oven keeps resetting, call for service.

A technician checks the connections between the relay and logic boards and the relay board switch settings.

Related codes

• C73: a different communication error, about the power boards detected.
• C74: logic board E2 checksum failure.
• C75: redundant strobe mismatch on the logic board.

Dacor wall oven service in Los Angeles

For Dacor wall oven service, call (310) 742-1907. Tell us C72 appeared, give the model number, and say whether the oven kept working or kept resetting.

Source: Dacor Wall Oven Service Manual, Appendix B Error Code Troubleshooting Guide