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It is getting power cause its getting hot, regardless of resistance it is stuck.
Sorry wrote to you by mistake.
Hello, so far it should like you have a model number 1402 ranco low pressure control, those have two knobs on the top. and some instructions on the on the face of the control under the pointers that says, 'cut in is cut out minus the differential' or similar.
Let me know the exact working, and where each pointer is set at, we can go from there.
That will work, I am in until 10 pm west coast time.
Hello again, sometimes one or both knobs on top are removed, tell me what each knob, or the single remaining knob, says on top ......and if there is an arrow on the knob that says "increase. decrease, colder or warmer'... get me some photo's of the top showing the knobs as viewed from the top, and the front of the control with beige plastic cover removed, (the older covers are black painted metal)... it will be one or the other.
We can go from there.