why do capacitors fail
Changed alot of Dual caps lately maybe just can't disipate heat
If they are swollen it was due to overheating
Not around here. Not much of a difference in price, and we charge accordingly.
Originally Posted by lovecoldair
Actually most OEM are GE's made in Mexico, The Chinese replacements seem to be more reliable, time will tell
Originally Posted by JBM1000
Goodmans fault ,who else could it be?
No Heat No Cool You need Action Fast
Leave it off.
Originally Posted by tyrone_bak
The tech will tell you how much it cost.
Now try a run capacitor.
Also. Next time your working on a compressor, read the voltage across the run capacitor while the compressor is running.
It will not be 240 volts.
Capacitors used to be filled with pcb's and seldom went bad. Now their filled with dialectricts (Can't spell) and yes they over heat. Most generally are the systems that are overcharged. Yes lennox caps. go bad but what about bryants?
I'm sure everyone here knows how to take 2-3 or more capacitors and wire them to get a certain mfd. reading.
Are those Turbo universal caps. any good?
its ok to replace a 370vac cap with a 440vac cap but never the other way!!! Also all Lennox require 440vac.
If you combine say a 35mfd with a 10 mfd to get a 45 mfd. do it in parrell and make sure they are both the same vac!
I tested several today after reading this thread
Originally Posted by cep a/c
Fix your math, 20 + 15 = 35.
Originally Posted by VOMranger
Originally Posted by Jabarco
Its got to be how the capacitors are made today that causes all the excessive failure rates. No different than copper evaporator coils corroding out after a few years. The manufacturers tell us its the heat that causes the caps to fail & the
chemicals in homes causes the copper to corrode. If you ever look at the size of the old capacitors that rarely ever went bad & compare them to the modern no pcb caps its laughable. They wouldn't even fit in the cabinets. The heat that is the major cause of failures today never seemed to bother the old ones. I guess it never got hot 20 years ago.
An engineer designs what he would never work on.
A technician works on what he would never design.