Viking Stove Repair in Toronto — Gas burner clicks constantly

• The single most common constant-clicking fault on a Viking gas range is a moisture-soaked spark ignition switch (PA020015, sold as Supco SPK0015) — the small plastic switch that 'connects through the burner valve stem and opens the electric circuit to allow spark ignition.' When a pot boils over or the top is over-cleaned, liquid wicks down behind the knob into that switch and holds its contacts closed, so it tells the spark module to fire continuously even with every knob in the OFF position. The honest first move is no part at all: we pull the knobs and burner caps, lift the top, and dry the switch bank; only a switch whose contacts stay shut after it is fully dry gets the PA020015 replaced.
• When ONE burner clicks nonstop while the others behave, the fault is almost always that burner's own spark switch (PA020015) on its valve stem, not the shared module — a contaminated or worn switch on a single valve keeps that one circuit live. We isolate it by turning each knob in turn and watching which position re-triggers the spark; a single sticky switch reads identical to a module fault on the bench until you separate the circuits, so we test per-valve before condemning anything central.
• When ALL burners click together and none of them respond to the knobs, the shared spark module is the suspect, not the per-burner switches. Viking surface-burner modules here are both 120V 0+4 re-ignition spark modules from different OEM makers: the Invensys 0+4 PA020047 (AP5315193, U-67204-7, fitting VGIC245/305/307/365/367/485/487, VGSC307/366/367/486 and VGRT-series ranges) and the Tytronics 0+4 re-ignition module PA020041 (AP5315188, blue, the version used where mounting space is tight — it supersedes the older 1246927 and PA020013). A module that latches into continuous fire ignores the knobs entirely; we confirm the input voltage and that the switches are open before pricing the module, because a module is far costlier than a switch.
• A misaligned or wet burner cap and a fouled spark electrode are the no-part causes we rule out before any module or switch is touched: if the cap is off-centre after cleaning, or grease bridges the white ceramic spark tip, the spark jumps to the cap edge instead of the gas and the control keeps re-firing looking for a flame it never confirms. We re-seat the cap square on its base and clean the electrode tip with alcohol; on Viking the surface (cooktop) spark electrode is PA020028 (AP5315182, which replaces 910113 / G5007447 / PA020014) and only gets replaced when the ceramic is cracked or the tip is burned back, not merely dirty.
• Constant clicking that continues AFTER a burner is already lit is Viking's re-ignition safety logic doing its job for the wrong reason: the system keeps sparking until it senses an established flame, so a weak or lifting flame — or a spark switch that never fully opens — reads as 'no flame' and the 0+4 re-ignition module (PA020041 or PA020047) keeps pulsing. We check flame quality and the switch return before assuming the module; a healthy re-ignition module that clicks post-light is usually being fed a false no-flame by a sticking PA020015 switch.
• Any constant-spark Viking call is serial-checked against the 2015 CPSC recall before we close it: roughly 60,000 freestanding gas ranges total (about 52,000 in the US plus about 8,300 distributed in Canada, sold ~2007–2014) were recalled because burners could turn on by themselves and could not be shut off at the knobs — Viking and parent Middleby paid a $4.65M CPSC civil penalty over late reporting of about 170 such incidents. A self-activating or unstoppable burner is not the same complaint as cosmetic clicking, and on an in-window VGIC/VGSC serial we treat self-ignition as the safety-recall condition, not a routine switch swap.
• On 5-Series VGR/VGIC units built Aug 10–Dec 1, 2021 we also run the 2022 recall serial check before working the spark system, because gas tubing at the burner joints on that build window can separate and leak — a free Viking repair (888-566-2512), and a gas-integrity issue we will not work around. Clicking diagnosis on a recall-window range is gated behind confirming the tubing remediation, since we are not putting spark energy near a joint that may be on the leak list.

Viking gas burner clicks constantly in Toronto — the local specifics

• The recurring Toronto pattern on Viking constant-clicking is moisture, not a dead module: the overwhelming majority of these calls trace to liquid soaked into a PA020015 spark switch behind a knob after a boil-over or a wet top-clean, which holds the circuit closed and sparks every burner with the knobs off. A large share clear on the first visit with a full dry-out and re-seat of the burner caps, no part replaced. The genuine part failures we do see split predictably — a single sticky valve-stem switch when one burner clicks, a shared 0+4 module (PA020047 or PA020041) only when all burners fire and ignore the knobs together.
• We bring the PA020015 / Supco SPK0015 spark switch (the one Viking ignition part that stocks locally), a knob-and-cap pull kit, alcohol and a drying setup for the moisture cases, and a meter to separate a stuck switch from a latched module before any module is ordered. Burner caps get re-seated square and the surface spark electrode (PA020028, AP5315182) cleaned on site. Shared 0+4 modules PA020047 (AP5315193) and PA020041 (AP5315188) are confirmed by serial and brought on the return visit, since channel pricing varies too much to pre-stock.

For the full Viking stove module — every fault, part number and code — see Viking stove repair in Toronto, and for the same fault across all brands the stove gas burner clicks constantly guide.