James G. for Model Number MER6770AAW Problem with double free standing oven: (Maytag Gemini oven). When using upper oven get this error message: F1-2 for suspect failure area "Runaway Cook Lower Oven" When using lower oven do not get any error message. Correction for this message is "Check temperature sensor which should read 1050 - 1100 ohms." Replaced sensor but still get same error message when using upper oven and no message when using lower oven. I suspect the oven control but with this question; why get this error message for the lower oven when using the upper oven and no messsage when using the lower (suspect) oven. This same message appears on the control message assembly from 30 to 60 minutes after being cancelled. This clock/control assembly is about the most expensive of all control assemblies used in these electric ovens. I would like to be absolutely sure that this assembly "AP4009010" is the the defective part in need of replacement. Furthermore, both ovens appear to be working properly; i.e reaching and holding the desired temperature. Conclusion: there is no "runaway cook lower oven" problem; since both ovens work proerly in use (i.e. attaining preset temperature and maintaing that temperature). The error message appears to be false and the real problem is "What is causing the error message?" What do you advise and WHY?
Answer Hello James. Based on all the information you provided, it sounds like the clock assembly 12001661 is bad and will need to be replaced. Here is the reason. We know the sensor is good because it is new. All the sensor does is send an ohms reading to the clock and then the clock determines if the temperature is correct. Two parts are controlling this code, sensor, which is new, and clock, which is bad and causing the code. You will need to replace the clock on the unit. Read More... Answered by AppliancePartsPros.com | Friday, July 13, 2012