Last week I was on a job that had blown 35/5 mfd capacitor on acondenser unit. In a pinch we replaced it with a 40/5 - will this cause premature failure or any other electrical problems..The voltage rating was compatible....
I think you already know the answer to this question.
You have the posts, why not apply for pro?
FOR AWHILE ....GET THE RIGHT ONE
Caps are usually 20% tolerance value, so a 35 -or + would be up or down 7 uf.
Therefore 42 would still be OK. [35+7=42] Some have 10% tolerance depending on the circuit. 40 will work if its a 20% value on the old unit, dig it outa the bad parts box. Read the label...make the decision.
Next time in the area put in the proper size, if its a 10% cap.
caps can short/open/change value/or the ESR changes
Over and out!!
Carry a multi-cap and save the hassle
A good HVAC tech knows how, an educated HVAC tech knows why!
will be ok, just increased starting torque a bit and lost some efficiency of the motor
Originally Posted by jmiles
if this was in pro area..... cost prohibitive, can i say that?
Originally Posted by heaterman