air-conditioningcompressorrelay
After replacing the fan, starting capacitor, and running capacitor, the system ran normally for ~1 day. Now nothing is starting.
I got a fieldpiece multimeter and tested all of new capacitors, connections, motor ohms, continuity, and current. All measurements look good, but current isn't flowing more than 0.05a, and capacitors don't seem to be charging.
There is 240v going to it, not sure what else to attempt, any suggestions are welcome.
Goodman gx160481fa
Yes, the concave shape should always curve in the direction of the air flow...
(Click to enlarge.)
Switching the L1 and L2 wires wouldn't change the motor's direction and the colors are a bit arbitrary since this is a 220V circuit. Verify that it is 220V and that neither wire is the neutral, then mark the white wire with black electrician's tape to signal that it is "hot" too.
It's a common thing to switch the polarity of the start windings relative to the run windings to change an AC motor's direction. These are usually yellow and orange wires, and the previous installer may have switched these. If you can't tell that this kind of switch was done, don't worry about it and set the new motor's jumper to get it spinning in the right direction.
But, if you aren't certain or comfortable with the situation, have an electrician look it over.
I ended up pulling the capacitor and testing it with my ohm meter. It was dead. I could have easily gone to the local HVAC supply, purchased a new capacitor for $30 and installed it myself. But, because I also wanted to have the pressure tested, I called in the guy who installed my furnace. He affirmed that I "did good", it was the capacitor. And because I had done most of the diagnostic work, he cut me a good deal.
In the end, the most important bit, on a 95 degree day when the humidity is 70%, a happy wife is a blissful life. ;)
Best Answer
My advice would be that you should have called an HVAC company first since this is what they are "schooled" in. I have to ask, why did you replace the fan and compressor capacitors? Were they bad or were you just guessing on a repair effort. When you say 240 is going to it, what do you mean? Where are you measuring the 240 volts. Is it at the incoming power supply or at the starter/contactor going to the compressor? Is the contactor energizing? Do you have 24 volts at the coil of the contactor? Is the fan running in the indoor air handler? The problem could be a tripped circuit breaker or blown fuse (now showing my age),at the 24 volt power source. Please call someone familiar with A/C service before you do something you can"t fix. These units can hurt you. Hope this helps.