Ken for Model Number mer6770aab Had F1-1 code, replaced upper sensor and code went away. however now bottom oven will not come on, neither bake or broil. Checked both elements ok. Control or sensor? Thanks, Ken
Answer Ken, The F1-1 indicates a runaway temperature in the upper oven. You will want to test the oven sensor in the upper oven for 1090 ohms of resistance at room temp. If this checks ok then the issue will be a faulty control board. Read More... Answered by AppliancePartsPros.com | Thursday, December 8, 2016