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Customer Questions and Answers for Overload (Compressor Thermal Protector) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18027975
Manufacturer Part Number: WP4387938

This compressor overload is a thermal protector that opens the circuit if the compressor overheats or draws excessive current. Replacing a failed overload restores reliable starts and helps prevent compressor damage when your refrigerator won't cool.

  • Protects the compressor by interrupting power during overheat/overcurrent conditions
  • Common symptoms: refrigerator not cooling, compressor won't start, repeated clicking or brief hum then shutoff
  • Mounts on the compressor terminal and works alongside the start relay on applicable models
  • Built for proper fit and dependable operation in the start circuit
What's included: One overload protector
  • Unplug the refrigerator and remove the rear access panel to reach the compressor
  • Note wire positions; pull the old overload straight off the compressor pin
  • Push the new overload fully onto the correct terminal and reconnect wiring/terminal cover
  • Restore power and verify the compressor starts without repeated clicking

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$98.61
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Questions & Answers

For Whirlpool Overload (Compressor Thermal Protector) (Part Number: OEM18027975)

Craig K for Model Number 106.60832101

I ordered and received the overload part AP3136048 (4387938). The part received looks nothing like the existing part or the photo on your website. I called and was advised that this is the correct part but the replacement part changed. How do I install this replacement part? My existing part is one piece, not a cover with loose pieces inside and the capacitor mounts directly on it. Again, if this is the correct part, how do I install it? Thanks.

1 Answer

Hello Craig. You install the white overload onto the single compressor terminal, and the relay goes on top of the overload onto the two terminals. Once installed, look at the old part and match the wire numbers to the new overload kit WP4387938 spades. Hope this helps.

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1 Answer

Hello Bob. You will need to check and see if the freezer drain is clogged. If so, you will need to clean it out with hot water and a turkey baster. Hope this helps.

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1 Answer

Hello Tim. You will hook the wires up the same way they were on your old overload. If the red wire was on L and the white wire was on N, then that is where they will go on your new overload. You can look at the wiring diagram for the refrigerator to determine where the line and neutral wires go. It does sound like the white should be Neutral and the Red would be the Line according to the colors. Hope this helps.

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