LG Refrigerator Repair in Toronto — Not cooling

• Linear-compressor loss of cooling is the signature LG not-cooling fault on 2014-2018 units: the box runs but never pulls down and goes warm within hours. The OEM fix is the TCA38151706 linear-compressor service kit — and the part that trips up cheaper installers is that TCA38151706 REQUIRES the LG software update kit CJT30000002 (sold separately); skip the firmware flash and the new compressor won't drive correctly.
• Before quoting any compressor, decode the serial. LG's Inverter Linear Compressor settlement (Rosen v. LG) covers units manufactured 2014-2022 with up to 10-year parts (and, post-settlement, full 10-year labour) coverage — a covered TCA38151706 turns a $250-$420 part into a labour-only ticket (LG reimburses roughly $250-$400 labour), so we check entitlement at lg.com by serial first.
• Er CO is a not-cooling code people misread: per LG it is a communication fault between the main control board and the display PCB (a lost board-to-display link or harness disconnect), NOT a compressor or inverter fault. A power-cycle sometimes clears a transient Er CO; if it sticks we inspect the main-board/display-PCB harness and the two boards before touching anything in the sealed system. Don't let an Er CO trigger a compressor condemnation — it points at the board/display link, not the inverter.
• Er dH (defrost-did-not-complete — the defrost cycle ran past ~60 minutes without reaching target temp) is the most common non-compressor not-cooling cause: the evaporator ices over, airflow chokes, and the fresh-food side warms while the freezer hangs on. The repair is usually the MEE62805106 defrost-heater assembly (plus thermostat/sensor/thermal fuse as needed), not refrigerant.
• Er FF (freezer-fan) and Er rF (refrigerator-fan) both present as 'not cooling' but are different fans behind different panels at different prices. The freezer-evaporator motor is the EAU64824401 (it supersedes the older EAU61505013) — a seized or open fan motor stops cold-air circulation even though the compressor is fine.
• Er IF is the ice-maker-compartment fan motor (DC fan with RPM/speed feedback): frost jams the blade or the motor opens and the board loses the speed-feedback signal, so the loss of sub-freezing airflow shows up as warm-side complaints. It's a fan/airflow not-cooling fault, distinct from the AEQ73110205 ice-maker assembly itself, which is a no-harvest (not a no-cool) issue.
• A 'dead/erratic, won't cool' LG with no clean compressor amperage can be the inverter/main PCB (EBR-series, e.g. EBR64173903 supplies drive voltage to the compressor). We verify inverter drive, compressor amperage and sealed-system pressures before condemning the board — swapping the EBR board alone rarely fixes a true compressor fault.

LG not cooling in Toronto — the local specifics

• The recurring LG not-cooling pattern we see across Toronto is the 2014-2018-era 'runs but goes warm within hours' linear-compressor failure — owners describe a fridge that's running and quiet but slowly warming. On these we decode the serial first because a large share of GTA units are still inside the inverter-linear settlement window, which changes the quote from full-part to labour-only. The second cluster is Er dH defrost-heater icing that warms the fresh-food side while the freezer holds.
• We roll to LG not-cooling calls carrying the TCA38151706 compressor kit WITH the CJT30000002 software update kit, an EAU64824401/EAU61505013 evaporator fan motor, and an MEE62805106 defrost-heater assembly — plus gauges to read sealed-system pressures and a meter to check the inverter-PCB drive, so we can separate a true compressor fault from a fan (Er FF/rF) or defrost (Er dH) cause before condemning the expensive part.

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 not cooling guide.