GE TFX20JRBAWW Defrost Heater Replacement – How to Diagnose & Fix
Need the replacement part? Search your model number at for guaranteed fit and fast free shipping.
Understanding the Problem
If your GE TFX20JRBAWW freezer is frosting over, the evaporator coil is covered in ice, or the refrigerator is cooling poorly but the compressor runs normally, the defrost heater circuit may have failed. The defrost heater melts frost that accumulates on the evaporator during normal operation; if it goes open, the defrost cycle cannot clear ice and airflow is restricted, causing cooling problems and excessive frost buildup. The issue commonly presents gradually as more frost accumulates until air flow is blocked. Replacing the defrost heater is a straightforward repair for someone comfortable working with appliances. It requires removing interior freezer panels to access the evaporator, testing the heater and defrost thermostat with a multimeter, and replacing the heater assembly if it shows an open circuit or visible damage. Always disconnect power before starting, and confirm the replacement part number matches the TFX20JRBAWW — there are several OEM and aftermarket equivalents available, so verify fitment before purchasing.
Common Symptoms
Excessive frost/ice on evaporator or freezer walls, poor cooling in fridge or freezer, ice buildup around evaporator, fridge runs continuously, water pooling from melt when door is opened.
Common Causes
- Defrost heater element has failed (open circuit or burned spot).
- Defrost thermostat (bi-metal) is open or stuck and won’t allow heater to energize.
- Defrost control (board or timer) or wiring/connectors are faulty and don’t run the defrost cycle.
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
Before replacing the heater, remove the evaporator cover and use a multimeter to check the heater for continuity; open (infinite) reading means the heater is bad. Also check the defrost thermostat and control/timer — one bad component can make the circuit appear failed.
Frequently Asked Questions
Can I replace the defrost heater myself on a GE TFX20JRBAWW?
Yes, if you have basic appliance repair skills and tools. Steps: 1) Unplug refrigerator or switch off breaker. 2) Empty the freezer and remove shelves and rear evaporator cover. 3) Visually inspect the heater for breaks and test for continuity with a multimeter. 4) If open, remove mounting clips or screws and disconnect heater wiring; install the new heater, reconnect, and reassemble. 5) Restore power and run a forced defrost (if available) or allow normal cycles and monitor. If you’re not comfortable working with electrical components or removing evaporator panels, hire a qualified technician.
How much does a defrost heater replacement cost for this model?
Part costs typically run from about $20 to $80 depending on OEM vs aftermarket. If you hire a technician, labor often adds $100–$250 depending on your area and whether additional parts (thermostat or control board) are required. Final cost depends on the exact replacement part needed for TFX20JRBAWW and any diagnostic fees.
Real DIY Repair Stories
Be the first to share your repair story!
Share Your Repair Story
Your experience helps other homeowners fix their appliances. Tell us how it went!
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.