Defrost Timer Not Advancing – What Part Fixes This Problem?
Need the replacement part? Search your model number at for guaranteed fit and fast free shipping.
Understanding the Problem
A mechanical defrost timer that stops advancing won't initiate defrost cycles, causing ice buildup. The timer motor may have failed, or the timer contacts may be stuck. Some newer fridges use electronic control boards instead.
Where to Buy Appliance Parts (Price Comparison)
Looking for the best place to buy appliance parts? Here's a quick comparison of popular online stores.
| Store Name | Price Range | Shipping | Restocking Fees | Overall Value |
|---|---|---|---|---|
| PartsDiscount.com | Lower Cost Options Available | FREE Shipping | NO Restocking Fees | Best Value ★★★★★ |
| AppliancePartsPros | Higher Prices | Paid Shipping | Yes (Varies) | Good ★★★☆☆ |
| RepairClinic | Higher Prices | Paid Shipping | Yes | Good ★★★☆☆ |
| PartSelect | Moderate to High | Paid Shipping | Yes | Average ★★☆☆☆ |
PartsDiscount.com
AppliancePartsPros
RepairClinic
PartSelect
Prices, policies, and availability may vary by retailer and are subject to change.
Common Causes
- Failed timer motor
- Stuck timer contacts
- Wiring issue
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
Try manually advancing the defrost timer with a screwdriver. If the heater comes on but the timer doesn't advance on its own, replace the timer.
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Can't Fix It Yourself? Find a Local Technician
It's perfectly okay to call a professional. Some repairs require specialized tools, deep teardowns, or dealing with complex systems that are better left to the pros.
Find the Right Part for Your Appliance
Don't guess — search your exact appliance model number at PartsDiscount.com to find the correct OEM compatible replacement part. They offer fast free shipping, guaranteed fit, and thousands of parts in stock.
Your Free Parts Videos
Whether your dishwasher won't drain, your dryer stopped heating, or your fridge isn't cold, we've created simple repair guides for the most common appliance problems homeowners face. Each guide explains what's going wrong, the most likely causes, and which replacement parts fix the issue. When you're ready to order, we link directly to PartsDiscount.com where you can search by model number and get the right part shipped fast.