What does the code "22" mean on my oven screen. The only thing that works is the lights. I already changed the transformer.
Answer Hello Eric,
First you'll need to reset the error code before you can use the oven again. To do this you need to enter the Diagnostic mode. To Enter the Diagnostic Mode: With the main power supply to the oven turned on, press and hold the CANCEL/SECURE and # XXXXX at the same time. When the diagnostic password XXXXX appears, release the CANCEL/SECURE key first then the # XXXXX. Press the 7 key on the keypad repeatedly until the letter “S” appears just below the words SERVICE ID NUMBER. Wait 3 seconds. Enter your Dacor Servicer Number. Press ENTER. I think the code is S1234. Then click error codes on the right option and reset the error.
Now as for the U22 error, if the error comes back then you have a problem. This can be caused by either a bad oven sensor or a bad display relay control board. You can't test the board but you can test the sensor. Open the door and remove the 3-4" long thin metal rod attached to the back wall. There are 2 screws holding the sensor on that you can remove and then pull the sensor forward until you can disconnect it. With a multi-meter, check the resistance of the sensor at room temperature and it should be about 1080 ohms. If it's not, replace the sensor, otherwise you need to replace your relay board.