Refrigerator Compressor Not Starting? Whirlpool Start Device WPW10197428 – Fix Clicking or Humming Fast
If your Whirlpool refrigerator compressor clicks, hums, and shuts off without cooling, the start device is the most common — and least expensive — fix. In most Whirlpool-built refrigerators (Whirlpool, Maytag, KitchenAid, Amana, Kenmore), this is caused by a failed PTC start relay or thermal overload protector. When it fails, the compressor attempts to start, draws excess current, and immediately trips the overload — leaving the refrigerator warm and clicking every few minutes. ⚡ Common failure point in Whirlpool-built side-by-side, top-freezer, and bottom-freezer refrigerators. Part WPW10197428 is the genuine OEM replacement that restores reliable compressor starting and full cooling performance.
❓ Is This the Right Part?
This is the correct fix if ALL of the following are true:
- ✔ The refrigerator powers on — interior lights work and the display is active
- ✔ You can hear a click or hum every few minutes as the compressor tries to start
- ✔ Power supply and outlet voltage are confirmed OK
- ✔ ONLY problem is the compressor not running and the refrigerator not cooling
Not sure? Send us your model number — we'll confirm before you order.
🔧 Common Symptoms
- Refrigerator not cooling — compressor clicks or hums every few minutes then stops
- Compressor body is hot to the touch but never runs for more than a few seconds
- Refrigerator runs continuously with fans but produces no cooling
- Rattling sound from the back lower panel near the compressor
✔ If these symptoms match, this is the most likely failed component in the system.
✔ In most cases, replacing this start device restores normal compressor operation immediately.
📦 Part Details
- Part Number: WPW10197428
- Type: Refrigerator Compressor Start Device — PTC Start Relay + Thermal Overload Protector
- Replaces: W10197428, W10128791, W10128795, WPW10197428VP
- Brands: Whirlpool, Maytag, KitchenAid, Amana, Kenmore
While the rear panel is off, shake the old start relay — if you hear rattling inside, it has failed. Also inspect the compressor wiring harness terminals for corrosion or heat damage. If the compressor still won't start after replacing the start device, the compressor itself may be seized — at that point, a control board or compressor replacement may be needed.
⚙️ Installation
Skill Level: EASY — 10–15 minutes. Disconnect power before servicing. Remove the lower rear access panel to expose the compressor, unplug the start relay and overload protector from the compressor terminals, snap the new start device into place on the compressor pins, reinstall the panel, and restore power. The compressor should start within the first cooling cycle.
✓ Compatible Models
Confirmed compatible with WRS325SDHZ, WRF535SWHZ, WRX735SDHZ, MFI2570FEZ, KRMF706ESS plus additional Whirlpool, Maytag, KitchenAid, Amana, and Kenmore refrigerator models. Contact us to verify your model number before ordering.
💡 Pro Tip
Remove the start relay from the compressor terminal and shake it next to your ear. A good PTC relay is completely silent — a failed one rattles. This 10-second test confirms the relay is the problem before you spend money on a more expensive repair. If it rattles, this part is your fix.
✓ Model-Specific Repair Pages
✅Compatibility & Cross Reference
Not sure about your model number? Call 1-877-899-7278 and we’ll help you confirm. All brand names are the property of their respective owners and are used for compatibility reference only.
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