Have the same issue with two of my Sumitomos, popped a fuse on a heater, replaced the fuse, now the heaters have no limit. They just blow right past the set temp and keep going. Thermocouple seems perfectly fine, what could it be?
Have the same issue with two of my Sumitomos, popped a fuse on a heater, replaced the fuse, now the heaters have no limit. They just blow right past the set temp and keep going. Thermocouple seems perfectly fine, what could it be?