Kenmore Refrigerator Cycle Not Completing — Troubleshooting Guide

When a Kenmore refrigerator's compressor cycle does not complete properly, the unit either runs continuously without reaching temperature or short-cycles (turns on and off rapidly). The root cause depends on your Kenmore platform: 106/596-series (Whirlpool-built), 795-series (LG-built with Linear Compressor), or older 253-series (Frigidaire-built). Each uses a different compressor technology, different defrost logic, and different control systems.

Identify Your Kenmore Refrigerator Platform

Find your model number on the interior wall (usually upper left inside the fridge compartment) or behind the crisper drawers at the bottom.

Compressor Runs Continuously — Never Reaches Temperature

Dirty Condenser Coils (30% of Cases, All Platforms)

The condenser coils (located underneath the refrigerator or on the rear) dissipate heat from the refrigerant. When coated with dust, pet hair, and kitchen grease, they cannot release heat efficiently. The compressor runs longer and longer trying to compensate, and eventually cannot reach setpoint temperature at all.

Sacramento homes with pets and those in older neighborhoods where kitchens have less ventilation are especially affected. Coils can become completely matted within 12–18 months without cleaning.

Diagnosis: Pull the refrigerator away from the wall and inspect the condenser coils (underneath: behind the kick plate; rear-mount: on the back of the unit). Heavily soiled coils are visually obvious.

Fix: Vacuum the coils with a brush attachment, then use a condenser coil brush (narrow, long-handled) to clean between fins. On bottom-mount condensers, remove the front grille/kick plate to access.

Parts Cost: $0 (cleaning) or $10–$15 (condenser brush tool) Professional Repair Cost: $80–$150 (maintenance visit)

Evaporator Fan Motor Failure (20% of Cases)

The evaporator fan circulates cold air from the freezer coils into the refrigerator compartment. If the fan motor fails, cold air stays trapped in the freezer while the fridge side warms up. The compressor senses warm fridge temperature and runs continuously trying to cool it — but without the fan, cold air never reaches the fridge thermistor.

Diagnosis: Open the freezer and listen for the fan running. On Whirlpool-platform (106/596) models, the fan stops when you open the door — press the door switch to override. No fan noise = failed motor.

Parts Cost: $25–$70 (fan motor — Whirlpool WPW10189703 for 106-series, LG 4681JB1029B for 795-series) Professional Repair Cost: $130–$250

Sealed System Leak (10% of Cases — Expensive)

A leak in the sealed refrigerant system causes gradual refrigerant loss. The compressor runs continuously but cannot produce adequate cooling because there is insufficient refrigerant. You may notice the freezer gets cold near the evaporator coils but the fridge compartment stays warm, and ice forms in unusual patterns on the evaporator.

This repair requires EPA-certified technicians with refrigerant recovery equipment. Not a DIY repair.

Professional Repair Cost: $400–$900+ (leak repair + refrigerant recharge)

Compressor Short-Cycles (Turns On/Off Every Few Minutes)

Start Relay Failure (35% of Short-Cycling Cases)

The compressor start relay (also called a start device or relay/overload kit) provides the extra current needed to start the compressor. When it fails, the compressor attempts to start, draws locked-rotor current, triggers the overload protector within seconds, and shuts off. It then cools and tries again — producing a click-buzz-click pattern every 2–5 minutes.

Diagnosis: A clicking sound every few minutes accompanied by a brief buzz (compressor attempting to start) is the classic start relay failure signature. You may also detect a burning smell from the failed relay.

106/596-Series (Whirlpool): Start relay part W10189190 or model-specific 795-Series (LG): Start relay EBG60663230 (integrated with overload)

Parts Cost: $15–$50 (relay/overload kit) Professional Repair Cost: $100–$200

Compressor Overheating (15% of Short-Cycling Cases)

When the compressor overheats (from dirty condenser coils, restricted airflow around the compressor, or internal wear), the thermal overload protector cuts power to prevent damage. After cooling for a few minutes, it resets and the compressor starts again — producing a short-cycle pattern.

Fix: Clean condenser coils, ensure adequate clearance around the refrigerator (2 inches minimum at rear and sides), verify the condenser fan (bottom-mount models) is running.

795-Series (LG Linear Compressor) — Specific Issues

LG Linear Compressors are inverter-driven and can run at variable speeds. They are generally more efficient but have specific failure modes:

Compressor Clicking (No Start): The LG Linear Compressor is known for internal valve failures that prevent starting. LG extended the compressor warranty to 10 years on many models due to this known issue. Check if your unit is still under the extended warranty before paying for repair.

Inverter Board Failure: The main control board that drives the variable-speed compressor can fail, causing erratic cycling. Board replacement is the fix.

Parts Cost: $150–$350 (inverter board) or warranty-covered compressor replacement Professional Repair Cost: $250–$500 (board) or $600–$1,200 (compressor, if out of warranty)

Defrost System Failure Mimicking Cycle Problems

If the defrost system fails, ice builds up on the evaporator coils over days/weeks. As ice accumulates, airflow through the coils decreases progressively. The compressor runs longer and longer trying to compensate for the reduced cooling capacity. Eventually, the coils ice over completely and no cooling reaches either compartment.

Diagnosis: Remove the freezer back panel and inspect the evaporator coils. If encased in ice, the defrost system (heater, thermostat, or timer/board) has failed.

106/596-Series: Defrost heater WR51X10055 (glass tube type), defrost thermostat WR50X10068 795-Series: Defrost heater 5300JR1092A, defrost sensor 6615JB2005H

Parts Cross-Reference (Kenmore vs OEM)

Kenmore-branded refrigerator parts carry the Sears markup (30–50% higher) with no quality difference. Since Sears closed most repair centers after the 2018 bankruptcy, ordering through Whirlpool or LG parts channels is faster and cheaper.

Prevention

• Clean condenser coils every 6–12 months — this is the single most impactful maintenance task for any refrigerator.
• Ensure adequate clearance — minimum 2 inches at the rear, 1 inch on each side.
• Do not block the air vents between the freezer and fridge compartments with food items.
• Listen for changes in compressor sound — a compressor that starts running louder or more frequently is an early warning of problems developing.

---

Kenmore refrigerator cycle issues? Our technicians service all platforms — Whirlpool, LG, and Frigidaire — and carry start relays, fan motors, and defrost components on every truck. Schedule a repair →