[Gem930]

I determined the front SCS blower motor cap is bad by hand spinning the squirrel cage fan and getting it to work.  Looking for a part number and any info on location.  Is it one of the caps behind the circuit board or do I got to get to the motor to replace it???? Any help would be greatly appreciated! 

Thx

[Richard]

Behind the circuit board.

Do you have a SCS manual. If not they are linked on this forum. SCS used two different motors with two different caps. It could be a 7.5 or 10, to the best of my poor memory. They are standard run caps

If you pull the circuit board you can barely access them. It’s real pain to replace one with the unit in place, but It can be done. Hardest part for me is getting the screw started back to hold the strap.

[Gem930]

Thank you for the reply. I did download the manual and determine which cap was the blower (evap). I pulled it and sure enough it’s open, however now I’m really confused….. the manual states the evap cap will be either 5 or 10 mfd depending if it’s Facso or GE. It goes on to state the condenser cap will be either 5 or 7.5 mfd again depending on the brand…..The strange thing is, my bad cap on the blower motor is 7.5 mfd????? And to make it even more interesting the cap on the condenser motor is 10 mfd. Seems like based on the cap sizes the motors are GE and maybe someone switched them…. Not really sure what the best approach is now….. any ideas?

[Jack Houpe]

You can't read a capacitor with an ohm meter but you can see if its shorted to ground. You'll need a cheap capacitance meter like this but some volt ohm meters have them built in and if you have that I retract all this.

https://www.amazon.com/Honeytek-CECOMINO...194&sr=8-3

[Gem930]

I had a bit of a brain fart when I was checking the caps. I was just using an ohm meter to check for a direct short which would indicate bad, but some how mixed that up in my mind and when I saw one open and one shorted across the terminals I just decided in my own little world the “open” was the bad one. Not sure what I got turned around, but maybe too many beers while trouble shooting. Anyway in the morning and after the last post straightened me out I realized I do indeed have a capacitance checker on my meter. So now the 10 mfd that read shorter last night shows open and has a capacitance of 10.1 and the 7.5 tha read open last night is still open and reads nothing on the capacitance test. So……. I am replacing them both! Still confused about the orientation of the caps, however. Because I have a 10 and a 7 it seem like the unit has GE motors, but per the service manual they are installed backwards?!?! Ideas?

[hypoxia]

Whenever a motor is replaced the capacitor is matched to whatever the motor calls for, it is printed on the motor data plate. In that case the SCS parts list may not be correct. Most repair techs will just get a normally stocked motor that fits, size, RPM, shaft diameter, etc. instead of going to SCS for a motor. Thus, if it is not the original motor it may have a different capacitor.

[Gem930]

I kind of figured that might be the case. And I don’t really want to tear the whole thing apart to look at the motor data plate. I did look at the capacitors on the other side and they are the exact same values in the exact same order so I’m going to go ahead and just replace both capacitors and put them in the way they were. My guess is I will probably be replacing at least one of these units with a mini split in the near future. I’ll report back if it works, thanks for all the help.

[Jack Houpe]

If your in there already might as well spend the extra $20 bucks and get new one.

[Gem930]

Well front AC is wiorking, mostly. I replaced both caps and at least the low is working, it does not appear to be going into high, however I must admit I’m not sure how to even get it into high. I know the rear ac is working on high as I’m pulling around 12 amps on both circuits. On this one I’m pulling 12 on the top and only 2 or 3 on the bottom. Perhaps that compressor needs a cap too or maybe the compressor has just breathed its last breath, either way a problem for another day as I have a new and more immediate issue to deal with. Thanks to all those who helped! What a great wealth of knowledge here! If anyone is interest in my new water pressure issues please head over to the plumbing section and let me know what you think!

Thanks again .

Gregg

[[email protected]]

Well front AC is wiorking, mostly.  I replaced both caps and at least the low is working, it does not appear to be going into high, however I must admit I’m not sure how to even get it into high.  I know the rear ac is working on high as I’m pulling around 12 amps on both circuits.  On this one I’m pulling 12 on the top and only 2 or 3 on the bottom.  Perhaps that compressor needs a cap too or maybe the compressor has just breathed its last breath, either way a problem for another day as I have a new and more immediate issue to deal with.  Thanks to all those who helped!  What a great wealth of knowledge here!  If anyone is interest in my new water pressure issues please head over to the plumbing section and let me know what you think! 

Thanks again .

Gregg

Gregg, one of my compressors was not working, it turned out to be the control board. The connections on the control board were bad and it also had melted the relay that controls the compressor. I ditched the entire control boards and went completely another route by creating my own control system using house style thermostats and relays to control everything. Just a thought, may look closely at your control board for damage. 

Here is my thread about my SCS units:
https://newellgurus.com/showthread.php?tid=7503