Robert for Model Number MTB 2156 GEW rev 13 James at appliance parts pro looked up my refrigerator and ordered overload relay kit # AP4009659, Whirlpool 12002782 for me. This kit differs from what was originally in the unit. The original PTC and overload were housed in white rectagular box that used a clip to attach it to the side of the compressor. Part of this box was also the case for all of the PTC start device parts. The replacement kit has the PTC seperate in its own case, from the overload with a large black plastic box to cover them also there is no mounting provision for this box on the side of the compressor as shown in the instruction sheet. On the side of the original white case next to where the smaller terminal tabs come out is the #1 that has a orange wire attached to it and next to the other larger terminal is the #4 that has a white wire attached to it. These two terminals are to the PTC that is built into this case. At the other end of the case is where the terminal for the overload passes through the case. It has a dark bluegreen wire attached.Can this kit be used with this refrigerator and if so which wires attach to which terminals and would these parts need to be attached to the compressor body? Both the old and new overload appear to be the same. Help on this would be appreciated.
Answer Hi Robert. KIT, OVERLOAD/RELAY - Kit was recently redesigned by manufacturer. Instructions included. Part Number: 12002782. You first install the overload ion the compressor top "tri"terminal w/ blue wire attached. Then push on the ptc relay. Then hook the white neutral wire on the #1 ptc terminal. The jumper wire goes to the origional narrower orange wire terminal which the other side hooks to the # 2 terminal . Yes all the wires will slide through the large cover side slit opening. The green wire is chassis ground and needs to be secures to the compressor side tang with a screw hole. It has a ground symbol next to it. Scrape the black paint from this point as you need a solid bond electrically for ground. Make sure the screw does not extrude into the relay assy. If you have a model with the run capacitor, you can connect it between the #1 and the #2 terminals. Place the cover under the bottom of the relay area and clip the bottom of the cover there. Make sure you dress the wires so they have proper slack and do0 not get pinched. Then finish snap,clipping the top of the cover to the compressor clips. This will take a little effort as the compressor runs and jiggles. It needs to be safe and tight. Thank you. Read More... Answered by AppliancePartsPros.com | Tuesday, November 22, 2011