Magic Chef Refrigerator Control Board

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Genuine Whirlpool part

Magic Chef Defrost Control Board

By: Whirlpool

Part Number: 4388931

The Defrost Control Board is an OEM part for Whirlpool refrigerators. This board manages the defrost cycle by controlling the defrost heater and monitoring the freezer's temperature.

Causes of a bad defrost control board can include electrical issues, wear from continuous use, or damage from power surges.

Symptoms of a bad defrost control board include:

Excessive frost buildup in the freezer compartment
The refrigerator not cooling properly
The defrost heater not activating
The refrigerator running continuously without cycling off

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.

Do-It-Yourself Stories from Customers like You The defrost heater would not work John R. • Lumberton , MS • May 21, 2019

The refrigerator was given to me and hasn't defrosted since it was new. I found the defrost timer had a burnt spot on the circuit board. After installing a new timer, the refrigerator would trip the circuit breaker in my house when it entered defrost mode. I found that the pink wire running from the control board all the way to the thermostat was shorted somewhere between the two parts, inside the refrigerator. I ran a new "pink" wire and all is good. Read more

$148.95

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Genuine Whirlpool part

Magic Chef Defrost Timer (Refrigerator)

5.0 (7)

By: Whirlpool

Part Number: WP67001036

This refrigerator defrost timer automatically starts and ends the defrost cycle to melt frost from the evaporator coils. Replacing a failed timer restores consistent cooling performance and helps prevent frost buildup that can restrict airflow.

Controls the timed switch between cooling and defrost to keep evaporator coils clear of frost
Common symptoms of failure: heavy frost on the evaporator or back panel, fresh food section too warm, unit runs constantly, or won't resume cooling after defrost
Restores proper frost removal and airflow for stable temperatures
Designed to match the original timer's function and wiring connections for applicable models

What's included: Defrost timer Install notes:

Disconnect power before servicing; wear cut-resistant gloves
Access location varies by model—often in the fresh food control housing or rear machine compartment
Photograph/label wire positions and transfer them to the matching terminals on the new timer
Reuse original mounting hardware and install in the same orientation as the original

This part fixes the following symptoms

Freezer not defrosting

Do-It-Yourself Stories from Customers like You I had no cooling in the upper ( not freezer) section of my frige Alexander M. • Gloucester , MA • August 23, 2015

I had had the same problem 4 or 5 years ago and spent close to $200 to repair it. I did have the slip from that repair with part #'s so I went ahead and ordered a defrost timer and thermostat. You-tube had plenty of videos on replacing those parts and even before they arrived I was able to add a switch and bypass the broken thermostat and start a cycle manually with the timer. (which it seems was was still functional). Between that and cycling some ice packs up from the still working... Read more

$106.54

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Genuine Whirlpool part

Magic Chef Defrost Timer

4.9 (15)

By: Whirlpool

Part Number: WP68233-3

This defrost timer controls the automatic defrost cycle in select refrigerators and freezers, switching between cooling and defrost to clear frost on the evaporator. It helps maintain stable temperatures and prevents heavy ice buildup and long run times. What it does:

Alternates the system between cooling and defrost on a timed schedule
Sends power to the defrost heater during defrost, then returns power to the compressor and fans
Failure can cause heavy frost on the evaporator/back freezer wall
May lead to warmer temperatures, constant running, short cycling, or no-cool if stuck in defrost

What's included:

1 defrost timer

Install notes:

Disconnect power before servicing
Access location varies by model
Note wire positions and transfer them one at a time to the new timer
Mount securely in the same orientation as the original and verify normal cycling after power is restored

This part fixes the following symptoms

Freezer not defrosting

Do-It-Yourself Stories from Customers like You The refrigerator was operating in an unusual manner. The freezer would get abnormally cold even when set at the warmest temp on the dial. Then the refrigeration area was too warm. Greg T. • Boulder , MT • March 23, 2014

I took the bottom tray out of the freezer and found the coils iced up severely. I was reasonably sure the defrost timer was the problem and your tech said that was a good possibility. Ordered and replaced timer. (15 minutes) Problem fixed!!! Saved purchasing a new fridge at big bucks. We live over 40 miles from a service center so the cost of having a tech come out is astronomical. Thanks!!! Read more

$108.74

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Genuine Whirlpool part

Magic Chef Defrost Timer (Refrigerator)

4.8 (6)

By: Whirlpool

Part Number: WP68233-2

The defrost timer controls your refrigerator's automatic defrost cycle, periodically pausing cooling to power the defrost heater. Replacing a faulty timer restores proper defrosting to help prevent frost buildup, temperature swings, and excessive run time.

Advances the system between cooling and defrost at set intervals
Sends power to the defrost heater, then returns the unit to cooling
Failure may cause heavy frost on evaporator coils and weak airflow
Fresh food section may run warm while the freezer ices over
Unit may run constantly, never defrost, or get stuck in defrost

What's included: 1 defrost timer Installation notes:

Disconnect power before servicing
Location varies by model; access the timer (often in the control housing or rear compartment), note wire positions, and transfer one at a time
Mount and secure the timer as originally installed; reuse existing bracket/fasteners
After reassembly, restore power and verify the unit advances through cooling and defrost

Do-It-Yourself Stories from Customers like You The refrigerator section was not staying cold as before and the noise was louder than normal Stephen S. • Flagstaff , AZ • July 11, 2015

At first, I suspected the evaporator fan motor was going bad, but when I went in to check it out, I found the evaporator coils totally frozen up; the fan was cavitating. I defrosted the coils completely and checked everything out. By process of elimination the Defrost timer had to be the culprit. I unplugged the timer and sure enough, the motor winding was open. Replacing the defrost timer fixed my problem. Troubleshooting (using the information available on your web site) took a little... Read more

$112.35

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Genuine Whirlpool part

Magic Chef Timer, Defrost (6 Hr.)

4.5 (2)

By: Whirlpool

Part Number: WP4391974

Defrost timer that advances the refrigerator's defrost cycle at roughly six-hour intervals to help prevent excessive frost buildup and keep cooling consistent. Replaces a failed timer to restore regular defrost scheduling. What it does:

Advances the defrost cycle so the heater can melt frost from the evaporator on a timed schedule.
Helps prevent heavy ice buildup that can reduce airflow and cooling performance.
Common symptoms of a failing timer: excessive frost or ice accumulation, compressor running constantly, or inconsistent temperatures.
Works with mechanical defrost systems to alternate between cooling and defrost intervals.

What's included: One defrost timer. Install notes:

Disconnect power to the appliance before servicing to avoid electrical shock.
Handle connectors and wiring carefully; ensure all terminals are fully seated.
Mounting hardware and connector types can vary by model—retain original fasteners and note wiring positions before removal.

This part fixes the following symptoms

Fridge too warm

Do-It-Yourself Stories from Customers like You Refrigerator wouldn't get cold Steven S. • St. Joseph , MO • September 29, 2014

I replaced the defrost timer. It's a 27 year old Montgomery Wards refrigerator and I couldn't find the correct timer anywhere until I contacted AppliancePartsPros. Great service. Read more

$107.95

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