RUUD Achiever - Wiring for Capacitor
#1
09-02-18, 11:32 AM
RUUD Achiever - Wiring for Capacitor
Hello,
Recently my A/C fan on my compression unit stopped spinning. I was able to restart it by manually spinning the fan. Seeing that the capacitor was blown, I have replaced both (see pics) but previously the HVAC repair company took two capacitors and tapped them together and used them in series (to replace the silver one in the pics).
After doing some research on my make and model (see pics) I was able to determine the proper capacitors but with no wiring diagram (found one that I attached but unsure if it is correct) and some internet research, did my best (which obviously didn't work).
Can someone offer wiring advice looking over the attached and letting me know what is the correct wiring? Note when looking at the pic of the capacitor, the HERM terminal is at 1 o'clock and the Common terminal is at 11 o'clock.
Thank you!
Recently my A/C fan on my compression unit stopped spinning. I was able to restart it by manually spinning the fan. Seeing that the capacitor was blown, I have replaced both (see pics) but previously the HVAC repair company took two capacitors and tapped them together and used them in series (to replace the silver one in the pics).
After doing some research on my make and model (see pics) I was able to determine the proper capacitors but with no wiring diagram (found one that I attached but unsure if it is correct) and some internet research, did my best (which obviously didn't work).
Can someone offer wiring advice looking over the attached and letting me know what is the correct wiring? Note when looking at the pic of the capacitor, the HERM terminal is at 1 o'clock and the Common terminal is at 11 o'clock.
Thank you!
Last edited by PJmax; 09-02-18 at 08:13 PM. Reason: labeled picture
#2
09-02-18, 11:49 AM
Group Moderator
That fan looks to be wired wrong. That black relay (LAC) is a low ambient control relay. There shouldn't be a cap in that line.
Is that black cap supposed to be for the fan ?
Are you trying to go back to a single cap ?
You need to make sure the single cap matches the fan motor requirement.
Is that black cap supposed to be for the fan ?
Are you trying to go back to a single cap ?
You need to make sure the single cap matches the fan motor requirement.
#3
09-02-18, 12:28 PM
Pete,
Thanks for your prompt replay.
Actually, the black cap was always there (and I did replace it with one within the specifications) but the HVAC repair company that did the initial capacitor replacement 7 years ago wired in two silver capacitors (one blew) which I replaced with the one silver cap (also to specs).
The reason the fan did not run was the outside power shutoff pull out was upside down after I reversed it the fan powered on.
So the fan now runs but the compressor cycles on and off (will only cycle for a few seconds and then shuts down and after a few repeats). So the question might be does the black wire from the black cap go to the Common (which moved to match the wiring document that shows a second red wire (black in my case) coming from the black capacitor)? When I tried that the fan still works but the compressor cycles on and off? Did I damage my compressor?
Thanks,
Frank
Thanks for your prompt replay.
Actually, the black cap was always there (and I did replace it with one within the specifications) but the HVAC repair company that did the initial capacitor replacement 7 years ago wired in two silver capacitors (one blew) which I replaced with the one silver cap (also to specs).
The reason the fan did not run was the outside power shutoff pull out was upside down after I reversed it the fan powered on.
So the fan now runs but the compressor cycles on and off (will only cycle for a few seconds and then shuts down and after a few repeats). So the question might be does the black wire from the black cap go to the Common (which moved to match the wiring document that shows a second red wire (black in my case) coming from the black capacitor)? When I tried that the fan still works but the compressor cycles on and off? Did I damage my compressor?
Thanks,
Frank
#4
09-02-18, 12:49 PM
Group Moderator
You have a black, red and purple wire to the compressor. The red and black go across the contactor and purple is the start line. I cannot see the red and black on the contactor.
#5
09-02-18, 02:40 PM
They are on the left side of the contactor (I take it that is what you are calling that black junction block in the center). The black wire is next to the black connector for the fan (it is the one that looks oxidized/tarnished). The red is above it (also on the left) with the purple wire is on the top of the connector.
Does it matter where that black wire from the black capacitor goes on which terminal on the silver capacitor? Wondering if that is causing the issue with the compressor cycling on and off? BTW, not sure if it matters, the fan engages first then the compressor starts is cycling. If I let the compressor go through its cycling long enough do you think it will remain on or am I causing damage due to some miswiring on the silver capacitor?
Does it matter where that black wire from the black capacitor goes on which terminal on the silver capacitor? Wondering if that is causing the issue with the compressor cycling on and off? BTW, not sure if it matters, the fan engages first then the compressor starts is cycling. If I let the compressor go through its cycling long enough do you think it will remain on or am I causing damage due to some miswiring on the silver capacitor?
#6
09-02-18, 08:18 PM
Group Moderator
Ok..... based on your description in the previous post...... look at the last picture you posted. You'll see I labeled it. Just to confirm... the red compressor wire is on the red marked terminal and the black compressor wire is on the black marked terminal.
If yes...... confirm my labeling of the cap.
If ok...... then the purple wire from the compressor should be the ONLY wire on the H terminal on the cap. It looks like the brown fan wire is correctly on the F terminal. Then there needs to be a jumper from the C terminal to the red marked terminal on the contactor. It looks like an orange jumper there. I believe you have a purple jumper from H to the red terminal. That needs to be removed.
If yes...... confirm my labeling of the cap.
If ok...... then the purple wire from the compressor should be the ONLY wire on the H terminal on the cap. It looks like the brown fan wire is correctly on the F terminal. Then there needs to be a jumper from the C terminal to the red marked terminal on the contactor. It looks like an orange jumper there. I believe you have a purple jumper from H to the red terminal. That needs to be removed.
#7
09-03-18, 04:01 AM
I appreciate all the help and guidance you are providing.
I can confirm your labeling is correct and the wiring is correct to the contactor. You are also correct that one of the purple wires comes directly from the compressor to the H terminal.
By the way, I should have mentioned from the beginning the connections on the relays and contactor is as I have found them. The only issues I am have been trying to resolve is the wiring on the silver capacitor - the one you labeled (and the wiring from one lead on the black capacitor to the silver capacitor - currently attached to the C terminal - anyway of confirming that is correct?).
Before I make the purple wire that only wire to the H, what happens to the purple wire from the top left relay (directly across from the black capacitor) that is currently attached to the bottom terminal on that relay (that relay is connected to the Black Capacitor) that is going to the H terminal as well the thick purple wire on the contactor that also goes to the H terminal - since the red and black wires are connected to that contactor?
Thanks again and enjoy your Labor Day!
I can confirm your labeling is correct and the wiring is correct to the contactor. You are also correct that one of the purple wires comes directly from the compressor to the H terminal.
By the way, I should have mentioned from the beginning the connections on the relays and contactor is as I have found them. The only issues I am have been trying to resolve is the wiring on the silver capacitor - the one you labeled (and the wiring from one lead on the black capacitor to the silver capacitor - currently attached to the C terminal - anyway of confirming that is correct?).
Before I make the purple wire that only wire to the H, what happens to the purple wire from the top left relay (directly across from the black capacitor) that is currently attached to the bottom terminal on that relay (that relay is connected to the Black Capacitor) that is going to the H terminal as well the thick purple wire on the contactor that also goes to the H terminal - since the red and black wires are connected to that contactor?
Thanks again and enjoy your Labor Day!
#8
09-03-18, 06:23 AM
Quick follow-up. I removed the purple wire from the contactor to the H connector and it is working. The compressor is warm to hot to the touch and condensation is forming on the bottom pipe running out from the compressor (that forms the upside "U" shape). I am assuming that both are normal.
Just waiting to see if the house will cool down.
Assuming nothing blows up or stops running, I should be good and I very much appreciate your guidance.
Just waiting to see if the house will cool down.
Assuming nothing blows up or stops running, I should be good and I very much appreciate your guidance.
#9
09-03-18, 11:42 AM
Group Moderator
on Labor Day.
