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

• The number-one GE reason a fridge runs constantly is heat it cannot shed: a dust-and-pet-hair-blanketed condenser coil paired with a slowing or dead condenser fan motor WR60X10168 (AP3855309, supersedes WR60X10018/10021/10028/10061/10153). With the coil insulated and the fan dragging, refrigerant never rejects enough heat, the box never reaches setpoint, and the compressor never cycles off; left long enough the compressor can overheat and trip out entirely. We pull the lower rear access panel, vacuum/brush the coil and spin the fan blade by hand for a seized bushing or obstruction, then ring out the motor before condemning the WR60X10168. GE caveat we check first by model: some GE units carry a sealed NeverClean condenser that is NOT meant to be brushed, so we confirm the unit isn't a NeverClean before quoting a coil-clean as the fix.
• A thermistor that reads falsely WARM is the classic electronic-model cause of nonstop running: the GE temperature sensor WR55X10025 (AP3185407) feeds cabinet temperature to the main board, and a drifted sensor tells the board 'still too warm,' so the board calls the compressor and fans without end and the box over-cools. It's a resistance test, not a guess: a good WR55X10025 reads roughly 16.3K ohms in 32F/0C ice water and about 6.2K ohms at 68F/20C (resistance climbs as it gets colder), and the freezer-section sensor on GE's tables runs higher again in the cold. A sensor whose resistance won't move with temperature, or one out of spec against the board/J1 chart, condemns the WR55X10025 rather than the board.
• When the box runs nonstop AND the freezer back ices over edge-to-edge, the defrost circuit is the root cause, not a calling fault. A dead GE defrost heater lets frost sheet across the evaporator coil and choke airflow, so cold air stops moving while the compressor runs continuously chasing a setpoint a frosted coil can't deliver. The proper part on bottom-mount/French-door units is the dual-quartz defrost heater kit WR51X10101 (AP4355467, supersedes the single-heater WR51X10032/53/97 and ships with its drain strap); a good GE heater reads roughly 10-50 ohms, an open one (often a blackened glass tube) reads infinite. Because a dead heater and a stuck-open bi-metal both frost the coil, we meter the heater AND the defrost bi-metal WR50X10068 (L140-30F, normally closed cold) together at the coil and fix the defrost circuit before anything else, or the constant-run returns within days.
• A damper stuck OPEN makes a GE over-cool the fresh-food side and run without rest. The damper control assembly WR49X10091 (AP3775595) meters cold air from the freezer evaporator into the fridge; when the flapper jams open or the plastic baffle breaks off its motor, freezer air dumps continuously into the fresh-food box, produce starts freezing on the fridge side, the freezer struggles to hold, and the compressor never satisfies both compartments. The field tell that separates this from the WR55X10025 thermistor is direction: a stuck-open damper over-cools the fridge (lettuce freezing), while a warm-reading thermistor over-runs the whole box. We actuate the damper in service/diagnostic mode and watch it open and close before condemning the WR49X10091.
• A door gasket that has compression-set, twisted, or torn pulls warm humid room air into the cabinet and forces the compressor to run constantly fighting the leak; GE's own service guidance lists a bad door seal as a reason the box 'runs more than normal' and sweats/frosts at the seal line. The GE fresh-food and freezer door gaskets are the model-coded WR24X family (for example WR24X10231/WR24X10186 fresh-food and WR24X10010 freezer seals across GTS/GTE/GIE bottom-mounts and top-mounts) and the exact number must be matched to the unit's model tag. We run the dollar-bill drag test around the perimeter, check the hinges for sag so the door closes square, then fit the model-correct WR24X seal rather than parts-cannoning the sealed system, because a marginal gasket and a refrigerant loss both end as 'never stops running.'
• Constant clicking every couple of minutes with the box drifting warm is the compressor start device, not a calling fault and not a dead compressor: the GE start relay/overload PTC WR07X10097 (AP4300623) mounts on the compressor, and when it fails the board keeps re-trying, the overload trips, and the unit cycles buzz-then-click while the cabinet slowly warms and the system effectively runs (or tries to) without ever pulling down. We pull the relay first: a burnt smell, a rattle when shaken, or no continuity between start and run terminals condemns the WR07X10097, and we always confirm the cheap start device before quoting a compressor on a 'runs and runs but stays warm' GE.
• Frost that builds over DAYS with a good thermostat, a good heater and no obvious failed part points at the 2002-2009-era main control board WR55X10942 (supersedes to WR55X10942C, AP7188100) mistiming the adaptive defrost cycle or sending continuous voltage to the compressor outright. The board runs adaptive defrost off the thermistors, so a board fault (cold solder joints / a burned resistor, often after a surge or outage) can keep the compressor energized nonstop. The real install gotcha on this part: on ALL bottom-freezer and ENCODE models with certain serial prefixes (TD2, VD2, ZD2, AF2, DF2, FF2, GF2, HF2, LF2, MF2, RF2, SF2), GE's install insert directs you to eliminate the thermistor wire in pin 2 of the J1 connector, or the new board mis-reads the sensor and the constant-run continues even with the board replaced. We prove the condenser/fan, thermistor, damper, bi-metal and heater good FIRST and condemn the board last, then recommend a surge bar on surge-prone homes so the replacement doesn't die the same way.

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

• The recurring GE-in-Toronto pattern on running-constantly calls is that the box is rarely low on refrigerant: most resolve at the condenser coil/fan (WR60X10168), a warm-reading thermistor (WR55X10025), or a frosted-coil defrost failure (WR51X10101 / WR50X10068) long before any sealed-system work. We also see a steady stream of 'fridge runs nonstop and produce is freezing on the fresh-food shelf,' which on GE points straight at a damper WR49X10091 stuck open rather than a compressor, and the 2002-2009 board-era GE units that come in after a power event running continuously, where the WR55X10942 board is mistiming defrost or holding the compressor on.
• We roll to these GE constant-run calls with the van-stocked condenser fan motor WR60X10168, temperature sensor WR55X10025, dual-quartz defrost heater kit WR51X10101 (with its drain strap), defrost bi-metal WR50X10068 and start relay/overload PTC WR07X10097, plus a multimeter to ohm the thermistor and heater on the spot. The model-coded damper WR49X10091 and the exact WR24X-family door gasket we pull to the unit's model/serial, decoded before we arrive, so the over-cooling-damper and worn-seal versions of this fault also close same-visit where we can.

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