LG Refrigerator Repair in Toronto — Leaking water

• The number-one LG leak is a frozen defrost drain, and unlike the fan/heater faults it throws NO error code on the display — LG's own support page lists "a trace of water or ice in the bottom of the freezer compartment" as the drain-blocked symptom, not a code. On LG French-door (LFXS/LFXC) and 4-door (LMXS) units the evaporator meltwater is meant to run down the trough, through the 5251JA3003D drain tube (it supersedes 5251JA3003B/E), and out to the drip pan over the compressor. The tube freezes at the point where it passes the sub-zero freezer wall: melt backs up, overflows the trough as a sheet of ice on the freezer floor, then tracks forward under the crispers and shows up as an unexplained puddle in the fresh-food box or on the kitchen floor. We steam-thaw the whole channel behind the rear evaporator cover — not just chip the visible ice — because a half-cleared drain re-floods within a week or two.
• The drain re-freezing days after a thaw is the heat-into-the-drain failing, not just a dirty tube. LG conducts defrost-heater heat partway down the drain with a small metal drain strap, and seals the bottom with a rubber duckbill grommet; when the strap is missing or displaced, or the duckbill hardens and won't open, the drain ices shut every cycle. The honest fix is restoring that heat path and reseating/replacing the strap and trimming or replacing the hardened duckbill — on newer service kits LG moved away from the clog-prone duckbill to a P-trap style end. We confirm the strap is seated against the MEE62805106 defrost heater (the same heater referenced on our frost-buildup and not-cooling work) before signing off, because a strap that lost contact re-ices the drain no matter how clean the tube is.
• A puddle that only appears after the dispenser or ice maker runs points at the dual-solenoid water inlet valve AJU72992603 (it supersedes AJU72992610 and feeds both the ice maker and door dispenser off two coils) — the same valve we cite on the ice-side faults. The LG-specific tell here is calcium buildup or a hairline pinhole in the valve body that weeps at the rear of the cabinet, or sprays a fine jet when the ice maker calls for a fill. We pressure-check the supply (a valve below roughly 20 psi can dribble past the seat) and inspect the body for cracks before condemning any tubing, because a back-of-fridge drip combined with an overfilling ice tray is the classic AJU72992603 combined tell.
• Water pooling inside the fresh-food liner or dripping at the filter head is the LT700P filter (ADQ36006101) seal, not the drain. On these housings the head O-rings tear or go missing after repeated cartridge swaps, or a cartridge seated even slightly off-angle leaks past the seal every time the dispenser runs — the same filter we list in the LG parts table. We re-seat the cartridge with a firm push to the lock, replace torn O-rings or a cracked head, and run the system in bypass to prove flow before assuming anything in the sealed system.
• An internal leak below the LEFT door on French-door units is usually the dispenser reservoir push-fit connection, not a failed part. LG's own service guidance is to inspect where the water line inserts into the reservoir fitting behind the lower door cover — only ONE black reference mark on the tube should be visible; if two marks show, the line has crept out of the quick-connect and weeps. We push the line fully home until a single mark remains and verify it holds under dispense pressure, a no-part fix that's routinely misdiagnosed as a tank or valve failure.
• A leak that returns alongside frost on the coil is an evaporator-fan / airflow problem feeding the drain, not a drain fault you can keep flushing. When the EAU64824401 evaporator DC fan (it supersedes EAU61505013 — the same fan behind our Er FF airflow fault) stalls or a torn door gasket lets warm humid air in, frost migrates down and re-plugs the drain every defrost cycle. We address the moisture source (gasket reseat, door level, fan) alongside thawing the drain, because clearing the 5251JA3003D tube on a frost-loaded box without fixing the air leak is a guaranteed repeat call.
• On LG Craft Ice and InstaView (LRMVS/LRFVC) door-in-door units a leak at the door base traces to a cracked dispenser nozzle or a loosened tube at the door pivot rather than the main drain or valve. The door-in-door panel flexes the dispenser line at the hinge, and a hardened or cracked nozzle drips at the front while the back-of-cabinet drain stays dry. We confirm the leak is at the door/nozzle (front, dry rear) versus the defrost drain (rear, sheet ice on freezer floor) before quoting, since these are different access jobs at different prices.

LG leaking water in Toronto — the local specifics

• The recurring LG-in-Toronto pattern we see on leaking-water calls is the same one LG's literature predicts: a clogged/frozen defrost drain on older French-door units that still use the clog-prone duckbill end (vs LG's newer P-trap kit) and where the drain strap has lost contact with the defrost heater, presenting first as sheet ice on the freezer floor and then as an unexplained puddle in the fresh-food box or on the floor weeks later. The second most common is the AJU72992603 dual inlet valve weeping after the dispenser/ice maker runs. A meaningful share of "leak" calls turn out to be a no-part fix — a drain thaw plus a reseated reservoir push-fit line or a reseated LT700P filter — which we call honestly rather than selling a part.
• We roll to LG leak calls with the 5251JA3003D drain tube and its drain strap/duckbill (or current P-trap kit), the MJS62591901 drain pan, the AJU72992603 dual inlet valve, and LT700P/ADQ36006101 filter O-rings — plus a steamer to fully thaw the drain channel behind the rear evaporator cover. For LRMVS/LRFVC Craft Ice and InstaView door-in-door units we confirm the model-specific dispenser nozzle/door-line part by serial before the visit.

For the full LG refrigerator module — every fault, part number and code — see LG refrigerator repair in Toronto, and for the same fault across all brands the refrigerator leaking water guide.