Samsung RF4287HARS icemaker not working

[GlennPA]

My daughter’s Samsung RF4287HARS refrigerator doesn’t make ice. I’ve checked out everything I could think of. The fans all work properly. The ice-room is cold enough. I’ve pressed the test switch on the icemaker, and it causes the chime to sound, but the fingers barely rotate (more on that later). I know the water valve works, because I’ve heard the water entering the icemaker, and dumped it out on occasion. Sometimes it makes a few sorry little ice cubes, but not very often.

I replaced the icemaker, with no improvement in performance. Here are the symptons:

I’ve noticed that the icemaker motor makes noise continuously (it never stops), like it’s trying to operate, but the fingers that eject the ice move VERY slowly. I checked the signal from the arm that detects a full ice bin, and that was working correctly.

I noticed the motor is rated 120 VAC. It has three wires: white, brown, and red. The circuit diagrams indicate the red wire is common, and the white and brown are for CCW and CW rotation. I tried powering the motor directly with 120 V, in both directions, but all it did was make the same sound it made in the refrigerator, and the fingers did not rotate.

I measured the AC voltage at the terminals on the PCB that power the motor. The terminal for CCW rotation was 86-89V all the time. The terminal for CW rotation was about 8.5V all the time.

Anybody know what’s going on here? Is the problem with the icemaker or is the PCB not sending the correct signals to the motor? Why did the new icemaker not fix the problem? Did a faulty PCB sending low voltage to the icemaker damage my new icemaker motor?

[Metro Appliances]

I'm pretty sure you've figured this out already. I'm a little disappointed no one replied. I don't see any diodes in the circuit, so it looks like your observation is correct. 120VAC to the icemaker motor. Did the new icemaker make that same noise, or did it just not work?

Sounds like the PCB though. What did you do to fix it?

[Mike S.]

So was this problem ever resolved?