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Old GE furnace with 2-speed blower fan and A/C
I have old GE furnace (gas/central model 21LU105D2M1) with 2-speed blower fan (blue,red & white wires)
Heating work good, low speed first & after warm up hi speed. Problem is with A/C. Seems like its work always on low speed. I try to take out red and blue wire from relay, and put blue wire where red was (red was not connected). A/C and blower start for a second and stop. I try again - was the same. Then I connect everything how use to be and it work. What can I do to make blower motor work on hi speed with my 16 years old FEDDERS A/C? On low speed air flow is to weak to cool down 2nd (top) floor. Maybe somebody have wiring diagram for my old GE furnace? TX. |
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