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Customer Questions and Answers for Compressor Start Relay (Ptc) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18015585
Manufacturer Part Number: WP10097204

This PTC start relay mounts on the compressor and briefly powers its start winding to get it running, then drops out. Replacing a weak relay can restore reliable starts and resolve clicking/humming with no cooling.

  • Provides the initial boost to the compressor via a positive temperature coefficient (PTC) element, then opens as it heats
  • Takes the start winding out of the circuit once the compressor is running
  • Typical failure symptoms: compressor won't start, repeated clicking/humming, no cooling, visible heat damage at the relay or connector
  • Direct replacement for the original PTC start device used on applicable models
What's included: 1 PTC start relay Install notes:
  • Disconnect power before servicing; allow hot components to cool
  • Access the compressor compartment, remove the cover, and note the relay's orientation; pull the old relay straight off the compressor pins
  • Inspect wiring terminals for heat damage; do not reuse burnt connectors
  • Firmly seat the new relay on the compressor terminals, reinstall the cover, restore power, and verify compressor start

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Questions & Answers

For Whirlpool Compressor Start Relay (Ptc) (Part Number: OEM18015585)

1 Answer

Carlos, Yes that is correct. Number 5 would be the same as 2 and 6 would be the same as 3 on the relay.

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Gurr for Model Number CSB2121ARW

I suspect that the start relay on my fridge is the problem. I've checked continuity on the chain starting with the thermostat down to the start relay. The relay is the only item that doesn't match my repair-book specs, in that it runs through the VOM dial briefly & settles on "0". Also when I plug the fridge in and click the screw for the timer to start, the fan runs & then there is a loud "click" sound from the general compressor area and it cycles off & continually tries to start again. Am I on the right track with thinking the relay is the problem? Thanks

1 Answer

Hello Gurr, If the start relay rattles when you shake it, it has failed. If your units' serial number begins with 10 or lower, order WP10097204. If you units' serial number begins with 11 or higher, order W10920279.

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1 Answer

Hi RJ. The normal trip time for a ptc relay part # WP10097204 is 4-6 seconds. It has a normal resistance value of 3-20 ohms. Thank You.

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1 Answer

Hi RJ. Yes generally the ptc relay part # WP10097204 does pull out from the compresor itself. Use a small screwdriver to pry the part out from the side of the compressor. The Overload Item Number: 2183409 pushes onto the compressor single pin first. Then the relay is placed over it holding it tightly on. Thank You.

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