Dacor Oven Error Code U22

U22 indicates a temperature amplifier failure involving both internal temperature probes in the upper or single oven cavity. The control has detected that probe 1 and probe 2 are reading more than 50°F apart while the oven temperature is rising through the 75°F to 100°F range. This discrepancy signals an unreliable sensor reading, so the oven stops normal operation to prevent a potential overtemperature condition.

It is not recommended to continue using the oven while U22 is active. The error means the control cannot reliably determine the actual oven temperature, which creates a risk of overheating. The oven should remain off until the faulty probe or connection is identified and corrected.

Repair costs vary depending on the root cause. A replacement temperature probe typically costs between $30 and $80 for the part, plus labor if a technician is involved. If the control board requires replacement, parts and labor combined can range from $250 to $600 or more. Getting a diagnostic inspection first helps avoid replacing parts unnecessarily.

A knowledgeable DIYer can start by checking that both probe cables are firmly connected at the control board and probe ends. If the connections are secure and the error persists, diagnosing the fault further requires accessing the SERVICE DIAGNOSTICS A/D screen to compare live probe readings. Replacing a temperature probe is a manageable repair for someone comfortable working inside the oven cavity, but a control board replacement should be handled by a qualified technician.

A power reset may temporarily clear the U22 code, but the error will return if the underlying cause is not addressed. If the probe cables are loose, reseating them may resolve the fault permanently. However, a failed probe or damaged wiring will continue to trigger U22 whenever the oven attempts to heat through the monitored temperature rise window.