Whirlpool WRS325FDAM02: Defrost System Failure and Frozen Drain Line in Memorial, TX
📞 Call (346) 512-3688🔧 Performed by Serhii T.
The Problem
- •Freezer temperature reading 11-14°F instead of the set 0°F
- •Thick layer of ice built up on the floor of the freezer compartment
- •Poor airflow from the freezer vents, especially noticeable in the upper section
- •Frost accumulating faster than normal between defrost cycles
- •Water pooling under the freezer drawers instead of draining properly
🔍 Diagnosis
When I arrived at the townhouse in Memorial, the freezer on this Whirlpool WRS325FDAM02 was sitting between 11°F and 14°F. The owner set it to 0°F. That gap of 11 to 14 degrees told me right away the unit was struggling to move cold air efficiently. I pulled the rear freezer panel and found the evaporator coil encased in a solid block of ice. Air could not move through the coil at all. The evaporator fan was running but pushing air against a wall of ice. That explained the elevated temperature, especially at the top of the freezer where warm air from the fresh food section bleeds in when circulation is poor. I checked the defrost heater with a multimeter and got an open circuit reading, confirming the heater had failed. The defrost thermostat also tested outside spec. With the defrost system not triggering properly, frost had been accumulating for weeks. I then inspected the drain line and drain pan beneath the evaporator. Both were completely frozen. The drain line on the WRS325FDAM02 runs through the mullion wall and is prone to freezing when defrost cycles stop working, because meltwater has nowhere to go and refreezes at the drain opening. The drain pan under the evaporator was solid ice. This is a known failure pattern on this generation of Whirlpool side-by-side refrigerators.
🔧 The Repair
- ✓Step 1: Removed all freezer contents and drawers, then pulled the rear evaporator cover panel to expose the evaporator coil assembly.
- ✓Step 2: Used a low-wattage heat gun and hot water flush to safely thaw the evaporator coil without damaging the aluminum fins or the R-134a sealed system.
- ✓Step 3: Tested the defrost heater with a Fluke 117 multimeter — open circuit confirmed, resistance reading was OL. Removed and discarded the failed heater.
- ✓Step 4: Tested the defrost thermostat (limit thermostat) — reading showed out-of-range continuity at room temperature, indicating it had failed open. Removed it.
- ✓Step 5: Thawed the drain line using a turkey baster with hot water flushed directly into the drain port until flow was clear and water passed through freely into the drain pan below.
- ✓Step 6: Thawed and cleared the drain pan beneath the evaporator, which was packed with ice. Confirmed the drain tube exiting toward the compressor pan was clear and unobstructed.
- ✓Step 7: Installed the new defrost heater and defrost thermostat, both OEM-spec Whirlpool replacements. Reconnected all wiring harness clips and confirmed secure seating.
- ✓Step 8: Reassembled the evaporator panel, replaced drawers, and monitored the unit for 45 minutes on-site. Left a thermometer probe inside. Called the client 2 hours later and temperature confirmed at freezer: 1°F, fresh food section: 37°F. System operating within spec.
✓ Result
The Whirlpool WRS325FDAM02 reached 1°F in the freezer and 37°F in the fresh food section within two hours of completing the repair. The entire job was done in one visit. Total cost to the client was $360. The owner was relieved because tenants in the townhouse had been dealing with warm drinks and questionable food storage for days. Once I confirmed temperatures were holding, the client laughed and said the tenants could finally enjoy a cold glass of wine again. A 90-day labor warranty was provided on the defrost system repair.
💡 Technician Notes
Whirlpool side-by-side models from the WRS325 series have a specific weak point in the defrost system. The drain line routing through the mullion makes it one of the first things to freeze when the defrost heater starts degrading, even before you see ice on the evaporator coil. The earliest warning sign owners notice is water pooling at the bottom of the freezer drawer area. That water is meltwater that cannot drain. If you see that and your freezer temperature is still close to set point, do not wait. The defrost system is already failing. To slow the progression, avoid leaving the freezer door open longer than necessary, which adds moisture load and accelerates frost buildup. Do not try to chip away at the ice yourself. On this model, the evaporator fins are thin aluminum and damage easily. Call a technician when you see unexplained water in the freezer floor or notice the freezer running warmer than usual for more than 24 hours.
Frequently Asked Questions
Why does my Whirlpool WRS325FDAM02 have ice building up on the freezer floor?
Ice on the freezer floor of a Whirlpool WRS325FDAM02 is almost always a sign the defrost system has stopped working. When the defrost heater or thermostat fails, frost accumulates on the evaporator coil and meltwater backs up and refreezes at the drain. Left unrepaired, the ice blocks airflow and the freezer stops holding temperature.
How much does it cost to repair a defrost system on a Whirlpool side-by-side refrigerator in Houston?
Defrost system repairs on Whirlpool side-by-side refrigerators in Houston typically run between $280 and $420 depending on how many components have failed and whether the drain line also needs to be cleared. This particular repair in Memorial, ZIP 77024, came to $360 and covered the heater, thermostat, and full drain line service completed in one visit.
What happens if I ignore ice buildup in my Whirlpool freezer and don't get it repaired?
If the defrost system failure is ignored on a Whirlpool WRS325FDAM02, the evaporator coil will eventually be completely blocked by ice. The freezer temperature rises and food spoils. The compressor works harder trying to compensate, which shortens its lifespan. A repair that costs a few hundred dollars now prevents a compressor or sealed system failure that costs over a thousand.
Is it worth repairing a Whirlpool WRS325FDAM02 or should I replace it?
The WRS325FDAM02 is a solid mid-range side-by-side. If the sealed system is intact and the failure is limited to the defrost components or drain line, repair is the right call. Defrost system parts are inexpensive and the repair is straightforward. Replacement only makes sense if the compressor has failed or the unit is over 12 years old and showing multiple system failures at the same time.
How often should the defrost cycle run on my Whirlpool WRS325FDAM02 and how do I know if it stopped working?
The Whirlpool WRS325FDAM02 runs a defrost cycle roughly every 8 to 10 hours of compressor run time. You won't hear it clearly, but the compressor will pause and the freezer temperature rises slightly during the cycle. If you notice the freezer running warmer than set, water pooling on the freezer floor, or thick frost on the back wall, the defrost cycle is likely not completing. That is the time to call a technician.
Repair Summary
- Brand
- Whirlpool
- Model
- WRS325FDAM02
- Repair Type
- Defrost System Repair and Drain Line Thaw
- Refrigerant
- R-134a
- Root Cause
- Failed defrost system causing evaporator ice blockage and frozen drain line
- Parts Replaced
- ✓Defrost heater assembly, OEM Whirlpool replacement compatible with WRS325FDAM02
- ✓Defrost thermostat (limit thermostat), OEM Whirlpool replacement
- Location
- Memorial, TX 77024
- Status
- ✓ Completed
Service Area
We provide refrigerator repair service in Memorial and surrounding areas.
View Memorial Service Area →Need Whirlpool Refrigerator Repair in Memorial?
We serve Memorial and all surrounding Houston areas. Same-day service available.