Two questions just for my curiosity.
Here's what I found. Customer moved in Saturday, claimed it worked Sunday and Monday. No cooling on Tuesday.
Lennox 10ACB48-10P outdoor unit, 4 ton cool only not running, contactor pulled in calling for cool. Capacitor had blown its white and grey waxy "guts" everywhere. Breaker tripped.
I tested for the proper ohms through common, start and run and got the proper readings. I can't remember them but they were correct. I also checked for short to ground. No short found.I replaced the capacitor,35/5, and restored power. Breaker immediately tripped and I heard a pop from unit near/under compressor. I then found the common disconnected from the compressor(source of the pop) and two different brand "stake on" connectors on start and run. Terminals old and dirty but not deformed to much. This unit appears to have been band aided for a while.
Lennox calls for a 50/7.5 capacitor. I'm returning and installing another stake on and the proper size capacitor. I'm replacing the other two old stake ons too if needed.
1. Is there any way a compressor/fan rated for 50/7.5 ever ran on a 35/5?
2. Did the wrong size capacitor have anything to do with the wiring issue? Would it overheat the connection and cause it to fail? Could an under sized capacitor cause the wire to blow off its terminal? (ok 4 questions)