Whirlpool Refrigerator Repair in Toronto — Freezer cold but fridge warm

• The defining freezer-cold / fridge-warm fault on Whirlpool-built fridges (also Maytag, Amana, Inglis, KitchenAid badges) is a stalled evaporator fan motor W10189703 (current OEM form WPW10189703; crosses to W10208121 / 2219647). This single fan pulls cold air off the freezer evaporator and pushes it forward into the fresh-food section, so when it seizes or its winding opens the freezer still holds on conduction while the refrigerator climbs. The field tells are a fan chirp/squeal behind the freezer rear panel and a warm fridge with a cold freezer. We spin the blade by hand and ring out the motor windings for continuity before swapping it, because a frost-jammed blade and a dead motor present identically and only one needs a part.
• On electronic models the dominant field reading of this warm-fridge symptom is an evaporator-fan-motor fault, and the way we confirm it is Service Test 03, which drives the freezer/refrigerator evaporator fans and reports fan states (codes 01-04). We run Test 03 and watch the fan actually spin under power before condemning the W10189703 motor, since a broken harness or connector at the fan mimics a dead motor and Test 03 separates the two. (A surfaced E2 code on these boards is most commonly the evaporator fan circuit, but it is not a single-meaning code across models, so we trust the live Test 03 result over the code label.)
• When the fridge warms but the freezer stays fine, the rear-evaporator defrost circuit is the classic root: a bimetal defrost thermostat WPW10225581 (replaces W10260437 / 2319914 / 2321799) stuck open, or a defrost heater WP12729128 (replaces 12729128 / AP6005557 / PS11738607) with no continuity, lets frost sheet the coil until airflow chokes and the fresh-food side fades while the freezer holds longest. The signature is frost packed on the rear freezer panel. We meter the bimetal and the heater element for continuity before condemning either, because a $20-$45 thermostat is routinely mistaken for a heater or a board.
• On adaptive-defrost-control (ADC) models a board that powers but never TRIGGERS a defrost cycle produces the identical iced-coil / fridge-warm picture as a dead heater. We test the board's defrost trigger, not just heater continuity, before choosing between a low-cost WPW10225581 bimetal / WP12729128 heater and a far pricier control board (French-door main board W10312695, current OEM form WPW10312695), so a sleeping ADC isn't misdiagnosed as a failed element.
• On single-evaporator cabinets with a clean, frost-free coil, a fridge-warm / freezer-fine complaint points at the motorized air damper (diffuser), not the defrost circuit: the baffle that meters freezer air into the fresh-food section sticks closed, so cold air never reaches the fridge. The OEM diffuser/damper assembly is W10899382 (incorporates/replaces air diffuser W10128734). Whirlpool's own Service Test 03 cycles the air baffle and reports 13 = damper open, 23 = damper closed (a 'd' on the display flags a damper stuck open or closed). We drive the baffle in diagnostics before ordering a damper, so a stuck flap isn't mistaken for a sealed-system fault.
• A drifting thermistor feeds the control board bad temperatures and makes it run the box wrong, a quiet warm-fridge cause when every mechanical part is fine: the refrigerator/freezer temperature sensor WPW10384183 (AP6020677 / PS11753996; replaces W10384183 / 2118228) is an NTC sensor, and in diagnostics the refrigerator-sensor Service Test 02 reports 01 = good, 02 = open, 03 = shorted (Test 01 is the freezer sensor). We read the Test 02 result and ohm the suspect thermistor against its resistance spec before touching the board, because an open or shorted refrigerator sensor short-runs the compressor and the fresh-food side never pulls down.
• On French-door and bottom-mount cabinets a re-icing defrost drain loads the coil and tips the box into freezer-cold / fridge-warm: meltwater backs up over the evaporator trough, freezes into a slab and chokes airflow before it ever reaches the floor. The durable fix is the OEM P-Trap Drain Tube Kit W10619951 (PS8691807 / AP5780744), which supersedes the original straight drain tube and adds a P-trap so the drain stops re-freezing - but the kit only holds if the iced drain is fully thawed first. We thaw and flush the drain, then fit the P-trap kit if the cabinet still runs the obsolete straight tube, so the same warm-fridge complaint doesn't return in weeks.

Whirlpool freezer cold but fridge warm in Toronto — the local specifics

• A recurring Toronto pattern on Whirlpool-built fridges is the warm fridge / cold freezer call that turns out to be a stalled evaporator fan or an iced coil from a failed bimetal or heater, not a dead compressor - owners hear a fan chirp behind the freezer panel or find frost on the rear wall and assume the worst. On single-evaporator units with a clean coil it flips to a stuck air damper instead, which is why we run the service-test sequence (fan/baffle Test 03, sensor Tests 01/02) on arrival rather than guessing.
• We carry the freezer-cold/fridge-warm parts to these Toronto calls: evaporator fan motor W10189703 (WPW10189703), bimetal defrost thermostat WPW10225581, defrost heater WP12729128, air diffuser/damper W10899382, temperature thermistor WPW10384183, and the P-trap drain kit W10619951 - so the most common root gets fixed on the first visit.

For the full Whirlpool refrigerator module — every fault, part number and code — see Whirlpool refrigerator repair in Toronto, and for the same fault across all brands the refrigerator freezer cold but fridge warm guide.