Whirlpool WRT518 Refrigerator — Issues & Fixes

Use this as your WRT518 reference: shared model numbers, ranked failures with the parts behind them, diagnostic codes, recall notes, and an honest fix-versus-replace framework. Every figure and part number below traces back to the WRT518 record, not a generic refrigerator template.

WRT518 at a glance#

WRT518SZFM, WRT518SZFG, WRT518SZFB all sit on the WRT518 chassis; a fix proven on one applies to the rest.

Common problems on the WRT518#

Ranked by how often each turns up in WRT518 refrigerator repairs:

Defrost thermostat opens prematurely. In the field: excessive frost buildup in freezer. It accounts for roughly 20% of WRT518 service calls. It is worth ruling out early, before it drags other components down.

Start relay clicks and compressor fails to start. Symptom: unit not cooling. On the WRT518 it lands at about 15% of repair visits. Catch it early and the repair usually stays contained.

Door hinge pin wears. The tell — top door sags and gasket loses seal. Expect it in near 12% of the repairs logged on this platform, and the first check belongs on the door hinge pin. A clean diagnosis here avoids a bigger teardown.

Evaporator coil ices over completely. What you'll see: blocked airflow, warm fridge section. It accounts for roughly 10% of WRT518 service calls. It is worth ruling out early, before it drags other components down.

Recall status#

The WRT518 carries no open recalls as of 2026-05-28. Re-check cpsc.gov with your model number now and then — the CPSC will email alerts if that changes.

Repair or replace?#

Keep repairing a WRT518 under 10 years old whenever the bill is under 50% of a replacement. After 10 years, weigh the running total — once two-to-three years of repairs exceed 40% of a new unit, replacement is the better long-term call.

Getting the most life out of your WRT518#

To maximize the lifespan of your refrigerator, keep the interior temperature at 37 degrees F for the fresh food compartment and 0 degrees F for the freezer. Avoid overloading — restricted airflow around food items forces the compressor to work harder. Set a calendar reminder to replace the water filter every 6 months and clean the condenser coils every 6-12 months. These two maintenance tasks alone can add years to your refrigerator's service life and prevent the most common failures.

Related guides#

• Whirlpool Refrigerator Not Cooling
• Whirlpool Refrigerator Freezer Too Cold
• Whirlpool Refrigerator Noisy

Good to know about the WRT518#

The WRT518 uses a mechanical defrost timer (not adaptive electronic defrost). If the timer motor fails or the defrost thermostat opens early, the defrost cycle cuts short and frost accumulates on the evaporator coil. Check the defrost timer by advancing it manually to the defrost position — if the heater does not energize, the thermostat or heater has failed.

The most frequently reported issues with the Whirlpool WRT518 refrigerator include compressor failures, evaporator fan issues, defrost system malfunctions, and sealed system leaks. Based on our repair data, the first two account for the majority of service calls. Most of these issues are repairable and parts are readily available through authorized distributors.

Most WRT518 trouble comes down to defrost thermostat opens prematurely and start relay clicks and compressor fails to start, both well-understood with parts on the shelf. Across its 3 models the repair story is the same, and a unit under 10 years old almost always earns another fix.

When you would rather hand it off, book a WRT518 refrigerator repair: upfront pricing before any work and a 90-day warranty on parts and labor.