Viking Refrigerator Repair in Toronto — Ice maker not working

• Dead modular ice maker that won't cycle even when jumped/forced is the headline ice-maker-dead fault on Viking's bottom-freezer and French-door boxes (VCBB built-ins, VCFF136, RVRF3361). Viking's actual cure is the whole modular ice maker assembly, not a sub-part: genuine OEM 002252-000 (AP5318599; supersedes the older PM-series modules PM910385 / PM910386 / PM910387 and crosses G50911850/G50911855/G50911858). The OEM module ships with the ice/bail arm but WITHOUT a wire harness, so the existing harness off the old head is typically re-used (a new harness 002253-000 is available if the old one is damaged). Diagnose first by initiating the harvest — press and hold the ice maker's reset for ~5 seconds and cycle the feeler arm; if the motor/module won't run a harvest with confirmed power and water present, the module itself is dead and 002252-000 (or the alternate assembly 021611-000 / AP5702461 on some serials) is the fix.
• Feeler / bail (shut-off) arm stuck in the UP position is the #1 'dead' ice maker that needs zero parts. With the arm up the control reads 'bin full' and halts production completely — no harvest, no fill. Before quoting any assembly, confirm the wire shut-off arm is clicked fully DOWN and free of an ice jam in the bin, then run the 5-second reset and cycle the arm up/down to put the module in test mode. A healthy Viking head harvests roughly every 90-120 minutes and needs about 24 hours to refill after a reset, so do not condemn a module on a single short observation.
• No water reaching the mold from a failed dual water valve is the classic 'ice maker totally dead' on dispenser/ice-maker Viking boxes. The genuine dual water valve PS400179 (Viking cross 021914-000; also catalogued 12544118 from the Robertshaw/Whirlpool OEM family Viking sourced) feeds BOTH the dispenser and the ice maker; when the ice-maker solenoid coil opens or the valve sticks shut, the head cycles but never fills, so no ice forms. Confirm 20+ psi at the supply (Viking valves want roughly 20-120 psi), meter the ice-side solenoid coil for continuity, and replace PS400179 rather than the module when the head motor runs but the mold stays dry.
• Frozen fill tube starving the mold — a fill that's too weak (low building pressure or a partially-failed PS400179 valve) lets the fill tube ice over, so each cycle delivers little or no water and the box reads as a dead ice maker. Thaw the tube, but fix the root cause: confirm the valve fills fully and supply pressure is in spec. A fill tube that refreezes after thawing points back to low psi or a marginal valve, not a one-time fluke — chasing the thaw alone brings the no-ice call back.
• Clogged water filter choking flow to the ice maker. On the freestanding French-door RVRF3361 the filter is the genuine Viking RWFVRF1; an old or clogged RWFVRF1 (or a third-party filter that doesn't index correctly) drops the pressure hitting the inlet valve, producing tiny hollow cubes first and then a full no-ice / frozen-fill-tube stall. First move on a 'dead' ice maker with a stale filter is a correctly-seated fresh RWFVRF1 and a re-test before condemning the valve or module — a non-indexing aftermarket filter is a frequent false 'dead ice maker' on these.
• Freezer not cold enough to harvest, driven by a Viking thermistor fault rather than the ice maker. The mold has to reach harvest temperature to cycle — the internal mold thermostat closes at roughly 15 F to trigger a harvest, so a freezer that isn't pulling the mold below that gate simply never fires the ice maker even though food stays frozen. If the evaporator or display sensor is out of range the control won't hold the box cold enough to harvest. Viking flags this as E3 (evaporator 'Sensor B' out-of-range) or E4 (display 'Sensor A' out-of-range), and a shorted/open sensor can also read Shr / oPn. Cure is thermistor C8983701 (replaces VC8983701; AP5313807) plus verifying the freezer is cold enough to harvest — a healthy box holding around 0-5 F is comfortably below the ~15 F harvest gate, while a warm freezer is a no-ice cause that no new ice-maker module will fix.
• Ice maker dead because the whole box has no compressor / no cold from a control-board failure — on Viking's pre-Middleby two-board architecture a failed power control board 005319-000 (replaces PE970463 / AP5318714) reads as no cooling AND no ice. If the freezer is warm and the box otherwise dead-fridge, the ice maker is a symptom, not the cause: diagnose the power board before ordering an ice-maker assembly, and route NLA legacy boards to rebuild/exchange. Replacing 002252-000 on a box that isn't actually freezing is a parts-cannon that strands the customer.

Viking ice maker not working in Toronto — the local specifics

• The recurring Viking-in-Toronto pattern for a 'dead' ice maker is that it usually isn't a dead module: on the freestanding French-door units (RVRF3361 / VCFF136) it most often traces to a feeler arm bumped up, a stale or non-indexing RWFVRF1 filter, or a frozen fill tube fed by a low-pressure condo riser — and on the dispenser boxes to the shared dual water valve PS400179 sticking on the ice side while the dispenser still works. We routinely arrive to find the homeowner already replaced an aftermarket head; the genuine modular assembly (002252-000) is the real fix only after we confirm the freezer is actually holding harvest temperature and the valve is filling.
• To these calls we carry the PS400179 (021914-000) dual water valve and a genuine RWFVRF1 filter, plus our pressure gauge and a hair-dryer/steam thaw kit for a frozen fill tube and the 5-second reset procedure for a stuck feeler arm. When the diagnosis points to the head itself we serial-confirm and bring the genuine modular ice maker assembly 002252-000 (alt 021611-000); if the freezer can't pull the mold cold enough to harvest — the mold thermostat needs to reach roughly 15 F to cycle — we carry the C8983701 thermistor for the E3/E4 sensor case.

For the full Viking refrigerator module — every fault, part number and code — see Viking refrigerator repair in Toronto, and for the same fault across all brands the refrigerator ice maker not working guide.