Frigidaire LGHX2636TF7 Ice Maker — Troubleshooting & What To Replace

Understanding the Problem

This guide covers the common problems owners see with the Frigidaire LGHX2636TF7 built-in ice maker: no ice production, slow/weak fill, small or hollow cubes, leaking, ice stuck in the bin, or noisy harvest/fill cycles. Follow these numbered diagnostic and repair steps to isolate the faulty component and fix it yourself. 1) Safety first: Unplug the refrigerator and shut off the water supply to the unit before doing any diagnostic or repairs. 2) Confirm symptoms: Remove the ice bin and empty any old ice. Note whether the ice maker cycles (you may hear motor/harvest/heater sounds) and whether the mold has water after a fill attempt. 3) Check freezer temperature: The ice maker needs roughly 0°F to 5°F (-18°C to -15°C) to make solid cubes. Use a refrigerator thermometer to confirm. If the freezer is too warm, diagnose frosting/air-flow issues (evaporator, damper, gasket) before replacing ice-maker parts. 4) Inspect water supply and filter: Make sure the water shutoff valve feeding the refrigerator is open and water pressure is adequate (household supply pressure should usually be ≥20 psi). If your model has a water filter, replace it if old or clogged and run a manual fill (or water dispenser) to confirm flow. 5) Observe a fill cycle: Put some paper towels under the fill tube and perform a forced/diagnostic cycle (see step 7) to see if the ice maker actuates the valve and whether water flows into the mold. No water flow points to the water inlet valve, clogged line, kink, or filter. 6) Test the water inlet valve: With the fridge plugged in and water on, put the ice maker into a harvest/fill test (step 7). Use a multimeter to check the inlet valve coil for continuity and verify it receives the correct voltage during a fill (usually 120VAC for many units) — if it gets voltage but doesn't open, replace the valve. 7) Run an ice maker test/harvest cycle: Many Frigidaire ice modules have a manual test/harvest button on the ice maker module or a service mode entered via control panel. If present, press and hold the ice maker's test button (or follow the fridge service manual to enter diagnostics) until the unit goes into harvest. Listen for the heater and motor. If the motor doesn't run but power is present at the module, the module is faulty. 8) Check the mold thermostat/thermistor and heater: A failed thermostat or heater on the ice mold will prevent harvest or will leave cubes soft/hollow. Use an ohmmeter to check continuity of the heater and thermostat (consult model-specific service data for expected resistance values). If open or out of range, replace the ice maker assembly or the specific sensor/heater if available. 9) Inspect mechanics and ice path: If cubes are freezing but not dropping, check the ejector gear, motor, and ice-level shutoff (arm or optical sensor). A stuck ejector or jammed cubes require clearing and may indicate a defective motor assembly or jam sensor. 10) Replace faulty parts: After identifying the bad component (water valve, ice maker assembly, thermostat/thermistor, sensor, or tubing), order the correct replacement part and follow the replacement steps below. 11) Final checks: Restore power and water, run multiple test cycles, check for leaks under the refrigerator, and verify cube size and hardness. 12) Preventive: Replace water filter every 6–12 months and keep freezer temperature within range. Safety note: Always disconnect power and turn off the water supply before doing continuity checks or replacing parts. When testing live voltages, use proper insulated tools and safety precautions; if you are not comfortable working with mains voltage, hire a qualified technician.

Common Symptoms

No ice production, slow or no water fill to the mold, small/hollow cubes, ice stuck in ejection zone, continuous water leaking onto floor, loud clicking or humming during fill/harvest.

Common Causes

• Shut water supply, clogged water filter, kinked or frozen supply line
• Failed water inlet valve solenoid (won't open when energized)
• Faulty ice maker module, mold thermostat, or heater (harvest fails)
• Freezer temperature too warm or defrost/evaporator problems
• Ice-level shutoff (arm or sensor) stuck or faulty, preventing cycles

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 ProsourceParts.com — just search by your appliance model number for a guaranteed fit.

Frequently Asked Questions