Not draining on a Kenmore refrigerator rarely comes out of nowhere — a specific part or condition is behind it, and pinning that down turns a guess into a real fix.
The short answer#
Most likely: frozen drain tube — the #1 cause. The short version: the drain tube passes from the below-zero freezer section through insulation to the above-zero area under the refrigerator. The portion inside the freezer section is prone to refreezing if: In our technicians' experience, wear on the primary breakdown component accounts for the majority of not draining — solved cases on Kenmore units. If that checks out, look next at clogged drain (food debris) —.
Do You Have the Right Tools?
Refrigerant gauges ($200+), vacuum pump ($250), leak detector ($150), and EPA-certified recovery equipment. Our technician arrives with $3,000+ in professional tools — your diagnostic is free.
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Causes, ranked by likelihood#
Here is how the causes stack up, most common first:
| Likely cause | How common | What you'll notice / what to check |
|---|---|---|
| Frozen Drain Tube — The #1 Cause | 60% of cases | The drain tube passes from the below-zero freezer section through insulation to the above-zero area under the refrigerator. |
| Clogged Drain (Food Debris) — | 25% of cases | Even without freezing, the drain tube can clog with food particles, mold, or mineral deposits. |
| Drain Pan Overflow — Rare | 5% of cases | The drain pan under the refrigerator holds defrost water until it evaporates (aided by compressor and condenser fan… |
Working through it yourself#
Here is what each cause looks like up close and how to confirm it.
1. Frozen Drain Tube — The #1 Cause (60% of cases)#
The portion inside the freezer section is prone to refreezing if: In our technicians' experience, wear on the primary fault component accounts for the majority of not draining — solved cases on Kenmore units. The drain trough is not angled correctly (manufacturing defect or shifted during transport) The defrost heater does not fully melt the drain opening Food particles enter the drain and act as an ice nucleation point 106/596-Series (Whirlpool): The drain opening is at the bottom center of the evaporator panel in the freezer. The drain tube passes from the below-zero freezer section through insulation to the above-zero area under the refrigerator. Inspect the pump for a trapped object and confirm it spins freely before condemning the motor.
2. Clogged Drain (Food Debris) — (25% of cases)#
Under the hood, even without freezing, the drain tube can clog with food particles, mold, or mineral deposits. Bits of food that fall into the freezer drain trough get washed into the narrow tube during defrost and accumulate. Fix: Same access as above — remove the back panel, clear the drain opening with a pipe cleaner, and flush with warm water until clear. Clear the pump filter and check the impeller for debris; a jam stalls the pump and stops drainage.
3. Drain Pan Overflow — Rare (5% of cases)#
The drain pan under the refrigerator holds defrost water until it evaporates (aided by compressor and condenser fan heat). In extremely humid conditions, after a manual defrost of a heavily iced-over unit, or if the condenser fan is not running (reducing evaporation), the pan can overflow. Diagnosis: Pull the refrigerator out and examine the drain pan (accessible from the front bottom after removing the kick plate, or from the rear depending on model). Inspect the pump for a trapped object and confirm it spins freely before condemning the motor.
Safety First — Know the Risks
Refrigerant (R-134a/R-600a) requires EPA certification to handle. Improper discharge is a federal violation and health hazard. Our techs are licensed and insured — let them handle the risk.
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In a nutshell#
The fast version, top to bottom:
- Frozen Drain Tube — The #1 Cause — 60% of the time; clear the pump filter and check the impeller for debris.
- Clogged Drain (Food Debris) — — 25% of the time; inspect the pump for a trapped object and confirm it spins freely before condemning the motor.
- Drain Pan Overflow — Rare — 5% of the time; clear the pump filter and check the impeller for debris.
What fixing it usually involves#
A typical repair follows the same arc: confirm the cause with a quick test, unplug and open the relevant panel, swap the failed part, then reassemble and run a full cycle to verify. On this symptom the frozen drain tube — the #1 cause is where most visits start.
The Real Cost of DIY
Average DIY attempt: $150-400 in tools you may use once, plus the risk of further damage. Our diagnostic visit costs $0 — we find the problem and give you an honest quote.
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Keeping it from coming back#
A little routine care goes a long way: keep the refrigerator clean, level, and free of buildup, and this symptom is far less likely to return.
When to stop and call for help#
Call a technician if the symptom persists after the checks above, if the repair means reaching power, gas, or sealed components, or if your Kenmore refrigerator is still under warranty — DIY work can void it. The bill scales with the part involved and your model, and a technician can confirm the exact figure before starting.
When in doubt, book a same-day diagnosis. A tech who knows Kenmore refrigerators can confirm the cause and quote the repair on the spot.
Appliance Repair Technician · 11 years experience
Experienced technician with 11 years specializing in Frigidaire and Electrolux refrigerator and dryer repair with a focus on safety.


