Whirlpool, Maytag & Kenmore Refrigerator Compressor Start Relay Parts — Models & Compatibility

If your Whirlpool, Maytag, or Kenmore refrigerator is clicking but not cooling, the compressor start relay has likely failed. This hub covers the ER61005518 start relay and overload kit — a critical component that kicks your compressor into action. This replacement works across dozens of models from all three brands, including the ATB, CT, CTB, and MTB series.

Is This the Right Part for Your Model?

The ER61005518 fits Whirlpool, Maytag, and Kenmore refrigerators with specific compressor configurations. Your model number is stamped on a label inside the fresh food compartment — usually on the left or right wall near the top. Match your full model number against the compatibility list below. This part replaces multiple OEM numbers: 61005518, AP4009659, PS2004057, 12002782, and 1194680.

About This Replacement Part

The start relay is what gets your compressor running. When you hear a click from the back of your fridge followed by silence — no hum, no cooling — that's typically a dead relay. The overload protector in this kit prevents the compressor from overheating during startup. Both components work together, which is why they're replaced as a set. The relay attaches directly to the compressor terminals at the back lower section of your refrigerator. Without a functioning relay, your compressor can't start, which means no refrigeration cycle at all.

Compatible Whirlpool Models

• ATB1935HRQ
• ATB Series (various)
• CT1 Series
• CT2 Series
• CTB Series
• MTB Series

Compatible Maytag Models

• CT15G4Q
• CT15G4W
• CT19G4Q
• CT21G6Q
• CTB1521GRQ
• CTF1722GRQ
• CTF1740GRW
• MTB1956GEQ
• PTB1551GRW

How to Verify Compatibility

Check the compressor itself before ordering. The relay plugs onto three terminals at the side of the compressor. If your current relay looks like a small black plastic box about 2 inches square, this is likely your match. Some models use a different style relay — if yours has a round or cylindrical shape, measure the terminal spacing before ordering. The ER61005518 uses a standard three-prong terminal configuration common to Whirlpool-manufactured compressors from the 1990s through early 2010s.

Cross-Reference Numbers

This part replaces: 61005518, AP4009659, PS2004057, 12002782, 1194680, AH2004057, EA2004057. If your parts diagram lists any of these numbers, the ER61005518 is your replacement.

Installation Overview

Unplug the refrigerator completely. The relay is located on the compressor at the back lower section — you'll need to pull the fridge out from the wall. Remove the metal cover over the compressor (usually held by a clip or screw). Pull the old relay straight off the compressor terminals. Push the new relay firmly onto the terminals until it seats completely. Snap the overload protector into place on the relay body. Replace the compressor cover, plug in the fridge, and listen for the compressor to hum within a few minutes.

When to Replace This Part

Replace the start relay if your refrigerator clicks repeatedly but won't start cooling, if the compressor feels warm but isn't running, or if you smell burning plastic near the compressor area. A failed relay often shows burn marks or a rattling sound when shaken. The overload protector may also trip repeatedly if it's worn out, preventing the compressor from staying on long enough to cool.