Whirlpool WRF535SMDM00 Not Cooling – What Part Fixes This Problem?
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Understanding the Problem
The most common complaint for the Whirlpool WRF535SMDM00 is that the refrigerator compartment is warm while the freezer is cold or the whole unit isn't cooling. This model relies on proper airflow from the freezer evaporator, working evaporator and condenser fans, a functioning defrost system, and a healthy compressor/start device to maintain temperatures. When any of those systems fail, cooling performance will drop. Diagnosing not-cooling problems means checking both airflow and refrigeration components. Start with simple checks: listen for the compressor running, confirm the evaporator in the freezer is frosted (normal) or iced over (bad), inspect condenser coils for heavy dust, and verify the evaporator and condenser fans run. Defrost system failures (defrost heater, thermostat or control) commonly lead to ice build-up that blocks airflow from the freezer to the fresh-food section. Electronics like the thermistor (temperature sensor) or main control board can also cause incorrect temperature control.
Common Symptoms
Warm refrigerator compartment while freezer is cold (or both warm), unusual clicking or humming from the back, ice buildup on the freezer evaporator, fans not running, or error codes on the display.
Common Causes
- Evaporator fan motor failed (loss of airflow from freezer to fridge)
- Start relay/overload or compressor failure (compressor not running)
- Defrost system failure causing evaporator icing (defrost heater, thermostat, or control)
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
To narrow down the faulty part: put your ear near the back of the fridge—if the compressor and condenser fan run but the evaporator fan is silent and the refrigerator section is warm, replace the evaporator fan motor. If the compressor clicks but won't run, test/replace the compressor start relay/overload.
Frequently Asked Questions
Can I replace these parts myself?
Some repairs are DIY-friendly: replacing evaporator or condenser fans, thermistors, or the air damper can be done with basic tools and by following safety steps (unplug fridge, remove panels, note connector orientations). More advanced jobs—replacing the compressor, replacing the sealed refrigeration system, or working on high-voltage electronics—should be done by a certified appliance or HVAC/R technician. Always disconnect power before working on the appliance and consult service diagrams or the Whirlpool parts lookup for exact part numbers.
How much will it cost to fix a WRF535SMDM00 that isn’t cooling?
Costs vary by cause: simple parts like an evaporator fan motor or thermistor typically run from $30–$120 for parts (plus labor if you hire a pro). A start relay or electronic control board can be $50–$300. Compressor or sealed-system repairs are expensive—often $500–$1,200 or more including labor—and in many cases it may be more economical to replace the refrigerator. Always get a diagnosis to avoid replacing parts unnecessarily.
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