Problems related to residential installations.
4 posts • Page 1 of 1
The issue is I replaced a dual start capacitor with two singles with the same capacitance-- 45uf at 370 VAC. The dual capacitor was 45uf and 5uf at 370 VAC. I realize now that the Fan motor calls for a 5uf capacitor. The symptom I was experiencing before I replaced it/them was that the fan motor would not come on. Now, the fan starts but after about 3 minutes it shuts down with the compressor continuing to run. Can I assume that this is because I have a 45uf cap vs. a 5uf ??? Do you think I did any damage to the motor by using this smaller capacitor?
You need to get a 5mfd capacitor for the fan immediately!! Hopefully all that has been happening is the fan motor has been shutting down of thermal safety. A capacitor is specifically matched to a motor go provide the correct hp and rpm. When you used the 45mfd you most likely increased the motor's output hp to beyond its design limits causing it to overheat. Hopefully there's no damage to the windings.