Samsung Refrigerator Repair in Toronto — Running constantly / never shuts off

• The single most common Samsung 'runs and never shuts off' cause is a dirty/blocked condenser coil, and it throws NO display code at all - unlike the 22E/22C fridge-compartment evaporator-fan fault or the 5E/5C defrost-sensor fault. On French-door (RF26/RF28) and side-by-side (RS25/RS27) cabinets the condenser sits low at the back, packs solid with dust and pet hair, and can no longer reject heat, so the compressor never reaches its cut-out setpoint and runs near-continuously. This is a no-part clean, not a sealed-system job: we pull the lower rear access panel, vacuum-brush-vacuum the coil, and confirm the compressor begins cycling off and the run/rest pattern normalizes BEFORE anyone touches refrigerant - condemning a compressor on a coil that is simply choked is the classic over-quote on this platform.
• A stalled condenser fan keeps the compressor running flat-out by killing heat rejection at the coil: when the genuine Samsung condenser fan motor (the currently-stocked DA31-00146B, which supersedes DA31-00220A/DA31-00146D, or the older 12VDC DA31-00305C on some cabinets - confirm the live part by model/serial, as DA31-00305C is now widely listed discontinued) jams on debris or its motor opens, the condenser stays hot, the box can't pull down, and the compressor never satisfies. Note this is the LOWER machine-compartment condenser fan, distinct from the rear-panel evaporator fan that throws 22E/21E. We pull the lower rear panel, clear the blade and spin-test it by hand first, then condemn the model-correct condenser fan motor only if it won't run on applied power, because a jammed-but-good motor produces the same always-running symptom as a dead one.
• A drifted defrost/temperature sensor makes the compressor run too frequently or never stop: the DA32-10105R evaporator defrost NTC (the current OEM number that replaces the legacy DA32-00006 series, including DA32-00006W) reports coil temperature to the board, and when it reads warm the board keeps calling the compressor even though the box is at temp. A hard short or open throws a 5E / 5C defrost-sensor fault (5C on newer dot-matrix displays, 5E on older seven-segment). The known trap is that a drifted-but-not-open sensor often throws no code while running the compressor continuously, so we meter the DA32-10105R against its temperature curve at the connector before touching the sealed system, and we run forced defrost (Fd) first because heavy frost can encase the sensor and make it read out of range.
• A defrost-circuit failure presents as runs-constantly because frost blankets the evaporator, airflow chokes, and the compressor runs flat-out against a coil it can't cool through. The DA47-00244U metal-sheath defrost-heater assembly (120V, with an inline thermal cutoff) never fires once the element or that cutoff opens, so frost rebuilds on the fins edge-to-edge every cycle and the box can never reach setpoint. We pull the rear evaporator panel - a coil sheathed white in frost confirms it - then ohm the heater for continuity (an open reading, often with a discoloured sheath, is the tell) and test it as a circuit alongside the DA32-10105R defrost sensor, because replacing the wrong leg of the defrost circuit is a guaranteed repeat call.
• An iced or stalled evaporator fan makes the compressor run constantly while one compartment stays warm: when a Samsung evaporator fan motor jams against a frosted blade or loses RPM feedback, the board throws 22E/22C (fridge-side evaporator fan) or 21E/21C (freezer-side evaporator fan), cold air stops circulating, the box never satisfies, and the compressor keeps running. The genuine freezer-compartment evaporator fan is the 146-series DA31-00146E (which corresponds to the 21E/21C freezer-fan fault); the fridge-compartment fan that throws 22E/22C is a separate model-coded 146-series motor, so we decode the model/serial to fit the right one - Twin-Cooling cabinets use a separate fan per compartment and a generic misfits the platform. The classic Samsung tell is fan noise that stops the instant you open the door. We run forced defrost (Fd) to clear an iced-over blade and spin-test by hand first, then fit the model-correct motor only if it won't run.
• A worn or compression-set door gasket makes the compressor run constantly by leaking warm, humid Toronto kitchen air into the box - the board never sees cut-out temp, so it never stops the compressor, and the infiltrating moisture also re-frosts the coil and re-jams the evaporator fan. The Samsung part is a model-coded DA97-series door gasket (e.g. DA97-13915D / DA97-05253E - confirm by model/serial, since French-door cabinets run separate left/right gaskets). We do the dollar-bill drag test around the perimeter and check door level/alignment before quoting, because a gasket reseat or swap is routinely misdiagnosed as a failing compressor on a unit that simply will not stop running.
• Don't let runs-constantly trigger a compressor condemnation on the wrong cause: a clicking box that strains to start points at the inexpensive DA35-00099G PTC start relay (replaces DA35-10013Q; shake-test rattle means it is shot), and an inverter board holding the compressor relay closed points at the DA92-00486A power module (the board that regulates compressor speed) - neither is a dead compressor. A true sealed-system runs-constantly call shows BOTH compartments slowly warming with the compressor running and the condenser hot, whereas a fan/airflow fault shows frost behind a panel with one side holding. We confirm the condenser coil is clean, the condenser fan runs, the gasket seals, and the DA32-10105R sensor reads true before we ever quote a compressor, so we never sell a sealed-system job on a coil-clean problem.

Samsung running constantly / never shuts off in Toronto — the local specifics

• The recurring Samsung-in-Toronto pattern on runs-constantly calls is that the box is reported as 'always running and getting warmer,' but the first finding is overwhelmingly a coil/airflow problem, not the sealed system: a condenser coil choked with condo lint and pet hair, or a stalled lower-rear condenser fan, with the unit jammed tight against the wall in a galley kitchen. Genuine sealed-system runs-constantly faults (both compartments warming, condenser hot) are the minority, and we rule out the coil, the condenser fan, the gasket and the DA32-10105R sensor before ever quoting a compressor.
• We carry to these Toronto calls a coil-cleaning kit plus the model-likely DA31-00146B condenser fan motor, the DA47-00244U defrost heater, the DA32-10105R defrost/temp sensor, a model-correct 146-series evaporator fan and the inexpensive DA35-00099G PTC start relay - the high-runners that close a coil-clean-plus-fan or defrost-circuit job first trip. The discontinued DA31-00305C is replaced against the model, and the DA92-00486A power module and the model-coded DA97-series door gasket we order against the decoded serial rather than carrying blind.

For the full Samsung refrigerator module — every fault, part number and code — see Samsung refrigerator repair in Toronto, and for the same fault across all brands the refrigerator running constantly / never shuts off guide.