GTS18GTHFRWW Refrigerator Not Cooling – What Part Fixes This Problem?
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Understanding the Problem
If your GE GTS18GTHFRWW (18 cu ft top-freezer) isn’t maintaining cold temperatures in the refrigerator or freezer, the cause is usually one of a few common failures: airflow problems (fans or blocked vents), a defrost system fault causing evaporator coil frost, or a sealed-system/compressor issue including a bad start relay. This model relies on a working evaporator fan and a functioning defrost cycle to move cold air from the freezer into the refrigerator compartment; if either fails the fridge will warm up even though the compressor may run (or try to run). Diagnosing the problem starts with simple observations: listen for the compressor hum and for fan motors, check for excessive frost buildup on the evaporator (inside the freezer evaporator cover), confirm condenser coil cleanliness, and measure temperatures. Many cooling complaints on this model are fixed by replacing a failed evaporator fan motor, a faulty start relay/overload on the compressor, or repairing the defrost heater/thermostat assembly. Severe cases (sealed system leaks or a failed compressor) require an appliance technician certified to handle refrigerant.
Common Symptoms
Warm refrigerator or freezer, frost buildup on evaporator, compressor clicking or running continuously, no airflow from freezer to fridge, interior lights on but cooling poor.
Common Causes
- Failed evaporator fan motor (no circulation of cold air)
- Defrost system failure (defrost heater, thermostat, or control) causing ice build-up on the evaporator
- Compressor or start relay/overload failure (compressor won't start or runs intermittently)
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
Quick check: open the freezer — if the evaporator area is heavily frosted or encased in ice the defrost system may have failed. If the compressor is trying to run but you hear a clicking or humming and it won't fully start, remove and test the start relay/overload for continuity or swapping with a known-good relay.
Frequently Asked Questions
How much does it typically cost to fix a GTS18GTHFRWW that isn’t cooling?
Costs vary by failure: replacing an evaporator or condenser fan motor typically runs $60–$180 parts plus labor; a defrost heater/thermostat repair is usually $80–$220; a compressor or sealed-system repair is expensive (often $800–$1,500) and sometimes justifies replacement of the refrigerator. Labor rates and part prices vary by region—get a diagnostic estimate from a local technician before authorizing sealed-system work.
Can I replace the broken part myself?
Yes for many issues: replacing evaporator or condenser fans, start relays, and defrost heaters/sensors is commonly a do-it-yourself job if you’re comfortable removing panels, unplugging the appliance, and using basic tools. Always disconnect power before working. Sealed-system repairs (compressor replacement or refrigerant work) require specialized tools and EPA certification—hire a qualified service tech for those.
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