Written by
Elena Navarro Appliance Repair Content SpecialistPublished September 11, 2026Updated October 20, 2026
Error codeU52 / L52
ApplianceWall Oven
Quick answer
U52 and L52 report a latch redundant switch failure on Dacor wall ovens; self-clean is unavailable.
Model compatibility: Dacor reuses codes across series and model years, so U52 / L52 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
Latch redundant switch failure: the cam and latch switch states are not complementary.
On a Dacor wall oven, U52 (upper or single oven) or L52 (lower oven) means the control double-checked the door latch switches and found incompatible states. The cam switch N.O. and N.C. contacts are not complementary, and neither are the latch switch N.O. and N.C. contacts. The manual is for 27-inch and 30-inch single and double ovens with touch-glass control; the series is not named.
What the manual lists
The source is bad switches or possibly a bad relay board. A technician checks the switch states at J18 on the relay board, replaces the latch motor mechanism, and then the relay board if needed.
Using the oven meanwhile
After 80 seconds the control logs a fatal error. Cooking is available and cleaning is not. The manual says to call for service.
For U52 or L52, call (310) 742-1907 and ask for Dacor wall oven repair in Los Angeles; see also Dacor oven repair. Have the model number and the code ready.
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.
