Checked middle Fryer unit, found pilot corroded and not putting out good flame. Thermopile has enough mv to keep pilot lit but not open valve. heated t pile and burner came on. tried to clean pilot but it in to bad of shape. turned off t stat and back on 15 times and burner came on. will obtain parts and return. semi operational requires part. 3/9/21 Removed burner assembly took gas line off pilot and loosened union. dropped assembly, replaced pilot with new. put back together and calibrated to 350 set at 350. was 18 degrees cold. unit is operational job complete.