Dacor Wall Oven U34 Error Code

A U34 on the display of a Dacor wall oven, or L34 on a lower oven, tells you temperature probe 3 is open. The U prefix belongs to the upper or single oven, the L prefix to the lower oven. This entry covers the 27-inch and 30-inch single and double wall ovens with touch-glass controls described in the Dacor service manual; the manual does not name a series.

What an open probe 3 means

The control has registered a probe 3 reading at the open end of its range. The manual lists three sources: a poor connection at the relay board or in the harness, a bad probe that has stuck open, or a bad wire in the harness. When the open reading continues for 60 seconds, the control logs it as a fatal error.

Can the oven still be used?

Probe 1 is the primary probe, so cooking and self-cleaning stay available. The manual says to expect possible effects on temperature: food may cook a little hotter or cooler than normal, so watch results and treat calibration with care.

What to do

The manual says to call for service. A technician checks the connections at the relay board and the probe state at the probe connector, then secures the connection or replaces the probe or the harness.

Related temperature probe codes

• U35 / L35 – probe 3 shorted, the opposite fault on the same probe
• U32 / L32 – probe 2 open
• U33 / L33 – probe 2 shorted

Dacor wall oven service in Los Angeles

If U34 or L34 keeps returning, call (310) 742-1907 for Dacor wall oven service in Los Angeles, or read about our Dacor oven repair work. Have the code, the oven model number and any steps you already tried ready when you call.

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