Hello- I have a 6 year old whirlpool gas dryer (GGW9878LW). Sometimes it will turn off very early before the load is dry... it will make one beep when it does (unlike the 3 beeps when it turns off correctly). It will turn back on right away... does not need time to cool off or anything. It seems to do this in sensor and timed dry and the drying temp. does not seem to matter... any ideas?

Thanks, fred