Skip to Content
  • 2 Day Quick Delivery! 2 Day Quick Delivery!
  • 365 Day Return Policy! 365 Day Return Policy!
  • 15 million satisfied customers 15 million satisfied customers
  • Over 2.1 Million Parts In Stock Over 2.1 Million Parts In Stock
  • Repair ForumFree Tech Support!
  • Google Trusted Store Google Trusted Store

Customer Questions and Answers for Defrost Timer by Frigidaire

Best Seller
Manufacturer Part
4.89 (64)
By: Frigidaire
Part Number: OEM20399667
Manufacturer Part Number: 5304518034

The Defrost Timer is an OEM replacement part for Frigidaire upright freezers. It serves as a crucial component responsible for regulating automatic defrost cycles.

Causes of a faulty defrost timer relate to 20,000+ hours of constant exposure to freezer temperatures as low as -10 degrees Fahrenheit. Such extremes can compromise electrical switching mechanisms over prolonged usage periods.

Symptoms of a failed defrost timer include:

  • Inability to initiate automatic defrost modes  
  • Excessive ice and frost accumulation inside cabinet
  • Warm areas detected due to impaired fan circulation
  • Diagnostic codes indicating defrosting problems

This genuine Frigidaire replacement part is compatible with Kelvinator and some Kenmore units as well.

More
$47.41
Compare At:
$56.89
You Save:
$9.48

IN STOCK
Ships Today Guaranteed
Add to Cart

Questions & Answers

For Frigidaire Defrost Timer (Part Number: OEM20399667)

1 Answer

David, You can leave the defrost timer on the factory setting but if the unit does not initially turn on you can either leave it and let it come on by itself or turn the dial to the line and kick it on.

Read More...

1 Answer

Hello Ronald. If you can manually advance the defrost timer and the unit comes on, then you will need to order and replace the defrost timer on the unit.

Read More...
James A for Model Number 2539218750

serial # S526185940 Model # How can I get to evaporator in order to check thermal unit that works the mullion heater. I see no screws in order to pull the inner shell out. Any suggestions that I could trouble shoot without taking that part out? The defrost timer seems to be working but there is a sheet of ice at the bottom of the back wall. This freezer usually runs at 10 Degrees or zero at times. Its up to 30 degrees now and doesn't cool down any farther. Thank you fore your time with my problem, James

1 Answer

James, There are 3 screws on the floor of the unit and 4 screws across the top of the freezer panel in the back of the freezer interior that you would remove in order to take that panel off. You may have to chip the ice out in order for the panel to come off. As for what may be causing this would be a frozen drain that has collected ice up to the point that it is blocking the return air flow which is not allowing the air to circulate through the unit. You will want to clear all the ice and flush the drain with hot water.

Read More...

1 Answer

D. Jones, You will want to check the coils behind the panel inside the unit and see if they are impacted with frost. If they are then test the defrost thermostat and defrost heater to see if they have continuity. If they check ok for continuity then the issue will be a faulty defrost timer 0RJ2003C478. The coils should have a even frost pattern from top to bottom. If they do not and there is only a little frost where the lines come into the unit then the issue will be a sealed system failure in which you will need to have a service tech to repair.

Read More...
Joe for Model Number PLRU1778ES0

Just replaced Timer Defrost #297318010 and wanted to know how do I adjust the dial to determine where it should be set? There are two notches, one at 9 oclock and one at 10 oclock. Where should the mechanism be turned to? It came out of the box at 10 oclock, however, the motor/fan has not stopped running at that setting. Do we need to adjust it, or leave it as it came? The coils in the back panel frost over with this setting - is this normal? Thank you.

1 Answer

Joe, The 9 o clock setting is for the unit to go into the defrost cycle and the 10 oclock setting is for it to come out of defrost. This is a 12 hour timer so it will only go into defrost every 12 hours of operation. The coils in the freezer will get frost on them but you do not want to see heavy frost where it does not allow airflow.

Read More...

1 Answer

Carolyn, You will want to check the evaporator assembly to see if the coils are impacted with ice. If they are impacted then you will want to test the defrost thermostat and defrost heater. You will be checking them for continuity, if they do not have continuity then replace the part. If they both check ok then the issue will be a faulty defrost timer. If the coils are not impacted with ice and have a good even frost pattern from top to bottom then the thermostat would be the issue. If the coils have no frost pattern or just a partial where the top one or 2 have frost on them it would be a sealed system issue and would need a service technician to repair.

Read More...

1 Answer

Jerry, While it is possible that the defrost timer could be making the noise, it is unlikely that it would have stopped when the door was opened. You will want to check for possible vibration of the condenser coils on the back of the unit if there are coils. Also check for vibration of refrigerant lines. These would be the most common reasons for the noise. Also check to make sure that there is no ice building up around the fan.

Read More...

Have questions? Ask our pros!

Contact us in a way that is convenient for you

Call us 1-877-477-7278
Need Help? Chat with a Pro
Or ask a question by filling in the form

Share your thoughts with other customers

Ask a Question
  • Over 2.1 Million Parts In Stock Over 2.1 Million Parts In Stock
  • 2 Day Quick Delivery! 2 Day Quick Delivery!
  • 365 Day Return Policy! 365 Day Return Policy!
  • Repair ForumFree Tech Support!
  • Google Trusted Store Google Trusted Store