My Kenmore Oasis Elite Dryer at 14 months started beeping three times during drying and at random times in the middle of the night CF01, CF02, CF03. Has anyone heard of this problem? The tech has been out twice and now he says the circuit board must be replaced for $400.

My Kenmore Oasis Elite Dryer at 14 months started beeping three times during drying and at random times in the middle of the night CF01, CF02, CF03. Has anyone heard of this problem? The tech has been out twice and now he says the circuit board must be replaced for $400.
Mine is doing the same! Of course the 1 year warranty has expired. I've had mine for 14 months too! I have been doing some research and it sounds like some computer board needs to be replaced and it costs approximately $400! I am no happy!