I have a SZ 427RG2 Wine frig with 2 frig drawers. This serial # F2463688. This has 2 compressors, 1 for the wine and 1 for the frig. Home owners complaint was the frig drawers are warm. I check out the unit to find compressors are running and hot as can be due to dirty coils and Condenser fan not running. I was unable to access the full unit due to a custom kick plate so I could not see if in fact the fan was seized. I checked the relay that according to the schematic the DPDT relay should be feeding voltage to the fan, and confirmed that 120v was present. I assumed that 120v to the motor and no fan means the fan is bad. I order the condenser fan, as well as the relays(according to PD does not exist). I take the fan only, and pull the bottom unit. When I gained access and changed the fan motor the fan would be in a humming state, as if it was not getting enough power. I measured voltage and at the power connector where the fan plugs into from one side I get 120V off there brown wire to chassis, and across the plug I get 120V, but the fan not running. Here is the questions.
If I get 120V from line to chassis or line to neutral but not neutral to anything have I lost my leg of power?
When I go to the relay and ck voltage from the white or neutral I am getting no power, am I to assume that there is a break in the wire or if I am wrong is it just a bad motor?
I have order another motor, but when I traced white back to the main harness plug and I disconnected it I was able to get voltage from the white wire that also ties into another power harness for the wine box.
I also noticed that EVERY Molex connector I touched to disconnect was brittle, still connected but may consider swapping wire harness out.
I ohmed out both motors with 2 meters and got resistance, but no continuity beep. Is it possible that the motor is in fact bad even though I am not able to confirm an electrical break.
I STRIVE NOT to be a parts changing monkey and really hate the fact that I can't confirm that my diag is incorrect so even as I checked that service book, it does state in the trouble shooting part that the relay is there after a certain serial # even though the IPL does not show the relay is there.
I seek help from what is ending up to be being a Curious George Monkey and throwing parts at something. I am looking at motors, main control a mysterious relay and harness. What I feel is that the motor is bad and dirty coils are the true culprits.