Parts for Maytag DNF20J: 03 - Unit Compartment & System Parts

Start relay for refrigerator compressors that helps the compressor begin running at power-up. Replacing a failed relay can restore normal starting behavior and resolve common startup symptoms. What it does

• Provides the initial start current path to the compressor during startup.
• Allows the compressor to reach running speed, then drops out once the motor is running.
• Common symptoms a bad relay may cause: compressor clicking, humming without starting, intermittent cooling or frequent cycling.
• Installed as the electrical component used only on compatible compressor assemblies.

• Disconnect power to the appliance before servicing to avoid electrical shock.
• Access the relay at the compressor; remove and replace the relay only after confirming diagnostics.
• Dispose of the old electrical part per local regulations.

This start relay controls power to the compressor's start winding so the refrigerator can start and run. Replacing a weak or burned relay restores dependable compressor start-up and can stop repeated clicking with warming temperatures.

• Energizes the compressor's start winding to provide initial torque, then disengages from the circuit
• Common failure symptoms: refrigerator not cooling or intermittently warm; compressor hums/clicks and won't start; relay rattles, smells burnt, or shows heat damage; overload trips
• Helps prevent hard-start conditions that stress the compressor
• The relay contacts are open/shorted, the compressor may fail to start and cycle off on overload

• Disconnect power before servicing; wear appropriate PPE
• Access the rear machine compartment; remove the relay cover on the compressor. Note wire positions, pull the old relay straight off the compressor pins, transfer wires, and fully seat the new relay in the same orientation
• If equipped, safely discharge the run capacitor; inspect the overload, wiring, and terminals for heat damage and address as needed
• Reinstall the cover. If the compressor still won't start, further diagnosis of the start device, capacitor, or compressor is required

This part no longer includes the relay. A common substitute relay for many models is part # WP2262181. If you are unsure if this substitution is compatible with your model, please call 1-877-477-7278 for more assistance.

This is overload only. For overload and relay order WP4387835.

This overload is a thermal protection device that mounts on the motor/compressor and opens the circuit when excessive heat or current is detected. Replacing a weak or failed overload helps restore safe startup and protects the windings from damage. What it does:

• Monitors motor/compressor temperature and current draw
• Interrupts power on overheat/overload to prevent damage
• Aids troubleshooting of start/run issues when paired with the start device
• Common symptoms: hums then clicks off, won't start, intermittent shutdown, frequent tripping

• 1 thermal overload protector

• Disconnect power before servicing; allow components to cool
• Access the terminal area on the motor/compressor; remove any cover
• Note/photograph wire positions; transfer wires and fully seat the new overload on the correct terminal
• Inspect the start relay, capacitor, and terminals for heat damage; replace any compromised parts

This terminal block cover protects the appliance's electrical connection area from accidental contact and debris, helping reduce the risk of shorts and corrosion while keeping wiring secure and contained. What it does:

• Covers and shields the power terminal/block where the power cord connects
• Helps prevent accidental contact with live terminals and reduces short risk
• Keeps out dust, lint and debris that can cause corrosion or arcing
• Useful when the original cover is cracked, missing or showing burn marks

• Always disconnect power (unplug or switch off breaker) before servicing electrical components
• Typically installs over the terminal block and secures with the existing fastener(s); inspect mounting hardware for wear
• Replace if cracked, melted or if terminals are exposed; ensure cover seats fully before restoring power

The Run Capacitor is an OEM part for Whirlpool appliances, designed to provide the necessary electrical charge to start and run the compressor motor. This part attaches to the compressor to aids in maintaining a consistent motor speed and ensuring smooth operation. The run capacitor plays a crucial role in the appliance's electrical system, storing and releasing energy as needed to power the motor.

Causes of a bad Run Capacitor include electrical surges, wear and tear over time, or overheating, which can lead to a failure in providing the necessary start-up energy or maintaining motor speed.

Symptoms of a bad Run Capacitor include:

• The appliance does not start.
• The motor shuts off shortly after starting.
• The appliance is humming but not running.
• Increased energy consumption.

This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.

This defrost timer controls when your refrigerator or freezer enters and exits the automatic defrost cycle to clear frost from the evaporator coils. Replacing a failed timer restores reliable defrosting to help maintain airflow, cooling performance, and stable temperatures.

• Advances on a timed schedule to initiate and end the defrost cycle
• Sends power to the defrost heater during defrost, then returns the system to cooling
• Helps prevent heavy frost buildup that restricts airflow and cooling
• Common symptoms of a bad timer: unit not defrosting or warming over time, heavy ice on the evaporator/cover, stuck running or stuck in defrost, or a timer that won't advance

• Disconnect power before servicing
• Access the timer (commonly in the control housing or machine compartment)
• Note/photograph wire positions and move leads one at a time to the new timer; mount securely
• Restore power and monitor for proper cycling; some models allow using the timer's advance slot to start a test defrost

This heater is the factory heating element that supplies controlled heat for the appliance's designated cycle, helping restore consistent, reliable performance when the original element is damaged or has failed.

• Converts electrical energy into heat for the unit's specific heating function
• Common signs of failure: cycles that don't reach temperature, longer run times, or uneven results
• Visual clues can include breaks, burn marks, or hot spots on the element
• Restores designed heating performance when installed in a compatible unit

• Disconnect power at the breaker before servicing; allow components to cool
• Note wire positions and mounting hardware; transfer any brackets/insulators from the original if required
• Avoid kinking the element or over-tightening mounting screws; confirm clearances from wiring and panels
• After installation, check continuity and run a brief test cycle while monitoring operation

This defrost thermostat is a bi-metal switch that senses evaporator temperature during defrost and opens to stop heater power once the coil warms. Replacing a failed thermostat restores proper defrost, reducing ice buildup and airflow-related cooling problems.

• Monitors evaporator coil temperature during defrost
• Opens the heater circuit at a set temperature; recloses when cold for the next defrost
• Helps protect against overheating and ensures consistent defrost operation
• Common symptoms: heavy frost on the evaporator, weak airflow/warm fresh food section, repeated ice buildup after manual defrost

• Disconnect power before servicing; wear cut-resistant gloves
• Access the thermostat at the evaporator behind the freezer's rear panel
• Move wires one-for-one from the old part; mount in firm contact with the coil/tubing and secure leads away from the fan
• After installation, the thermostat should show continuity when cold and open circuit when warm

Size: 8 x 1/2 ab.

This replacement screw secures specified refrigerator components—such as covers, brackets, and internal panels—so they stay properly mounted. Replace a missing, stripped, or corroded fastener to restore a tight, rattle-free fit and reliable operation.

• Provides the correct fastener for locations identified in your model's parts diagram
• Helps prevent looseness, vibration, and rattling of panels or brackets
• Replace if the head is stripped, threads are worn, or the screw is missing
• Symptoms can include loose parts, gaps, or noises from movement

• Unplug the refrigerator and shut off water if working near the ice maker or dispenser
• Match length and type to the original; follow your model's parts diagram for placement
• Start threads by hand to avoid cross-threading; tighten snugly without over-torquing, especially into plastic
• Keep track of screw positions; do not mix different screw lengths or styles