LG LMWC23626S/02 Compressor Replacement — Not Cooling & Ice Maker Failure
📞 Call (346) 512-3688🔧 Performed by Alex Z.
The Problem
- •Refrigerator not cooling — fresh food compartment warm to the touch
- •Ice maker stopped producing ice entirely
- •Compressor running continuously but no temperature drop
- •Frost buildup missing on evaporator coils despite unit running
🔍 Diagnosis
Upon arrival at the customer's residence in Cypress, TX 77433, the technician performed a full systematic inspection of the LG LMWC23626S/02 refrigerator. The appliance label confirmed operating parameters of 115V ~ 60Hz, 3.0A rated draw, and R-600a refrigerant with a factory charge of 2.12 oz (60g), manufactured in Korea (serial: 106KRBYK2901). Initial voltage check at the outlet measured 118V — within normal tolerance. The technician connected a digital manifold gauge set to the process tube and recorded suction pressure of 0 PSIG and discharge pressure of 0 PSIG, confirming a complete loss of refrigerant charge — consistent with either a leak or compressor mechanical failure. A halogen leak detector sweep of all brazed joints, evaporator, and condenser circuits revealed no detectable leaks, pointing to internal compressor valve failure as the cause of refrigerant migration and pressure loss. Winding resistance on the compressor terminals measured with a Fluke multimeter showed the start winding at open circuit (OL), confirming the LG linear inverter compressor had suffered an electrical winding failure in addition to the mechanical breakdown. Amperage draw at startup was 0A — the compressor would not spin. Evaporator coils showed no frost pattern, the expansion device was clear, and the filter-drier tested within acceptable moisture indicator range prior to replacement. Root cause: failed LG inverter compressor resulting in complete sealed system pressure loss and refrigerant migration.
🔧 The Repair
- ✓Disconnected the LG LMWC23626S/02 from the 115V power supply and pulled the unit away from the wall to allow full rear access.
- ✓Removed the rear access panel and lower machine compartment cover to expose the compressor, filter-drier, condenser coil, and process tube assembly.
- ✓Attached a digital manifold gauge set to the process tube stub; confirmed zero suction and zero discharge pressure — complete system pressure loss verified.
- ✓Performed electronic leak detection sweep (halogen detector) across all brazed joints, evaporator inlet/outlet, condenser, and capillary tube connections — no external leaks found, confirming internal compressor failure.
- ✓Used a Fluke multimeter to test compressor winding resistance: start winding read OL (open circuit), confirming electrical winding failure in the LG inverter compressor assembly.
- ✓Recovered any remaining refrigerant per EPA Section 608 protocols using a certified recovery machine — trace amounts only were recovered given near-zero system pressure.
- ✓Unbraised the suction and discharge lines from the failed compressor using oxy-acetylene torch; removed the original LG inverter compressor and set it aside for disposal.
- ✓Installed a compatible replacement LG inverter compressor, aligning the mounting grommets and securing the compressor base bolts to spec; brazed suction and discharge line connections using nitrogen purge to prevent internal oxidation scale.
- ✓Cut out the old filter-drier and installed a new OEM-specification bi-flow filter-drier, brazing both inlet and outlet connections under continuous nitrogen flow to maintain a moisture- and scale-free sealed system.
- ✓Triple-evacuated the sealed system using a two-stage vacuum pump, achieving a deep vacuum of 200 microns or lower — held for 30 minutes to confirm no vacuum rise, verifying system integrity.
- ✓Charged the sealed system with exactly 2.12 oz (60g) of R-600a refrigerant as specified on the appliance label, using a precision refrigerant scale to ensure accurate charge weight.
- ✓Restored power to the unit, verified inverter compressor startup via the LG Smart Diagnosis board, monitored amperage draw returning to normal 3.0A rated draw, and confirmed evaporator frost pattern forming within 20 minutes of operation.
✓ Result
Following the sealed system repair and compressor replacement, the LG LMWC23626S/02 reached a fresh food compartment temperature of 37°F and freezer temperature of 0°F within approximately 4 hours of operation — well within LG's design specifications. The ice maker resumed normal ice production cycles during the follow-up verification call the next morning. The customer was highly satisfied with the quick turnaround and professional service. A 90-day labor warranty and 1-year parts warranty on the replacement compressor were provided at job completion.
💡 Technician Notes
LG inverter compressors in models like the LMWC23626S are known to fail silently — the unit continues to run while the compressor produces no cooling effect, which can mislead homeowners into thinking the issue is a thermostat or control board problem. If your LG refrigerator is running constantly but not cooling, check for a frost-free evaporator as a key red flag. R-600a sealed systems must only be serviced by EPA 608-certified technicians using explosion-rated recovery equipment, as isobutane is flammable. Never attempt to add refrigerant without first identifying why the charge was lost. Preventive tip: keep condenser coils clean every 6 months and ensure the unit has at least 2 inches of clearance on all sides for proper heat dissipation. Early warning signs of compressor stress include increased compressor noise, longer-than-normal run cycles, and subtle temperature fluctuations in the fresh food zone.
Frequently Asked Questions
Why did the compressor fail on my LG LMWC23626S refrigerator?
LG inverter compressors in models like the LMWC23626S can fail due to electrical winding breakdown, refrigerant contamination, or prolonged operation with restricted airflow causing overheating. In this case, the start winding tested open circuit, indicating an internal electrical failure. Regular condenser cleaning and proper clearance around the unit can help extend compressor life significantly.
How much does it cost to replace a compressor on an LG refrigerator in Cypress, TX?
Compressor replacement on an LG inverter refrigerator in the Cypress, TX area typically ranges from $400 to $750 depending on the model and whether a full sealed system service is needed. The LG LMWC23626S uses R-600a refrigerant, which requires specialized equipment and certified technicians, adding to the overall repair cost compared to older R-134a systems.
What are the early warning signs of compressor failure on an LG refrigerator?
Early signs include the refrigerator running constantly without maintaining temperature, unusual clicking or humming noises from the rear of the unit, ice maker slowing down or stopping, and the fresh food compartment feeling slightly warmer than usual. On LG inverter models like the LMWC23626S, the compressor may fail quietly — the unit appears to run normally but produces zero cooling.
Is it worth repairing the compressor on an LG LMWC23626S, or should I replace the refrigerator?
For an LG LMWC23626S that is fewer than 8–10 years old and in otherwise good condition, compressor replacement is generally cost-effective. The sealed system repair restores full function at a fraction of the cost of a new appliance. If the unit has multiple failing components or is over 10 years old, a replacement conversation may be warranted — a qualified technician can help assess the full picture.
Can R-600a refrigerant be recharged at home after an LG compressor replacement?
No. R-600a (isobutane) is a flammable hydrocarbon refrigerant that requires EPA Section 608 certification, explosion-rated recovery and charging equipment, and a precision refrigerant scale for accurate charging. The LG LMWC23626S requires exactly 2.12 oz (60g) of R-600a — even slight overcharging or undercharging will impair performance. This work must only be performed by a licensed appliance technician.
Repair Summary
- Brand
- LG
- Model
- LMWC23626S/02
- Repair Type
- Sealed System Repair / Compressor Replacement
- Refrigerant
- R-600a
- Root Cause
- Failed LG inverter compressor caused complete sealed system breakdown
- Parts Replaced
- ✓LG Inverter Linear Compressor — replacement unit compatible with LMWC23626S/02, rated 115V/60Hz R-600a
- ✓Bi-flow filter-drier — OEM-spec, compatible with R-600a sealed system
- ✓R-600a refrigerant — 2.12 oz (60g) precision charge per appliance label specification
- ✓Brazing materials and nitrogen purge supply (consumables used during sealed system repair)
- Location
- Cypress, TX 77433
- Status
- ✓ Completed
Service Area
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