Viking Stove Repair in Toronto — No spark (igniter failure)

• The single most common Viking no-spark call is the surface-burner spark module having quit feeding the electrodes. Viking uses a re-ignition spark module (the "0+4" power pack) carried as PA020047 (AP5315193, Robertshaw/Invensys U-67204-7) on most freestanding/built-in gas ranges, and the closely related PA020041 (AP5315188, the Tytronics 0+4) on others. One module pulses high voltage to every surface electrode at once, so a dead module is the all-burners-tick-but-no-spark or no-click-at-all signature, not a single-burner fault. A discipline that matters on Viking specifically: PA020041 and PA020047 are NOT interchangeable even though they share an input, because the mount and the spark output differ by platform, so we match the module to the model/serial before ordering rather than swapping one for the other and stranding a second truck roll.
• When ONE position clicks but throws no usable arc (or a weak arc that won't reach the gas) while its siblings spark fine, the fault is that burner's spark electrode, Viking PA020028 (AP5315182; replaces 910113, G5007447, and the older PA020014). A cracked ceramic insulator or a carbon/grease-tracked tip lets the high-voltage pulse leak to ground through the burner base instead of jumping the gap, so it ticks without lighting. We pull the cap and watch for the spark flashing over to the chassis before condemning the inexpensive electrode, because a single-position no-spark is an electrode story, never the shared module.
• On VGSU rangetop and built-in units where the electrode is integral to the burner base, the no-spark fix is the burner base assembly itself: Viking PB050033 (VGSU burner base assembly for the CF/R/LR positions, comes with electrode, replaces PG230022). When the cast base has cracked around the electrode boss or the integrated electrode is fouled past cleaning, the base-plus-electrode is replaced as a unit rather than chasing a separate electrode that isn't sold apart on that fitment. We confirm the model uses the integrated-base design before quoting this, since it is a materially larger part than a loose PA020028 electrode.
• A burner that won't even start clicking when its own knob is turned while the others spark normally isolates to that valve's spark/ignitor switch, Viking PA020011 (AP5315171; replaces 810751) or the PA020015 switch on other fitments (AP3160646; replaces 810755; for units built before 2/23/2005). The switch sits on the burner valve stem and closes to signal the module when the knob is pushed and turned; a pitted or open contact means that position never calls the module, so there is no click and no spark on that burner alone. We meter each switch for continuity at the lit position before ordering, so a dead-burner-only call isn't mis-quoted as an electrode or a module.
• Constant clicking that won't stop even with every knob OFF is moisture or a welded spark switch, not a gas fault, and it is the classic Viking continuous-spark pattern. Water from a boil-over or a wet cleaning wicks down the knob stem and bridges a spark switch (PA020011 / PA020015) contact closed, so it keeps feeding the module and the whole top ticks regardless of dial position. We dry the switches and burner heads first because that is a no-part fix on a large share of these calls; only a contact that still reads closed at OFF after a full dry-out gets the switch replaced, and the module (PA020047/PA020041) is condemned LAST, only after the switches and electrodes check out.
• A mis-seated or wrong burner cap is a distinct no-spark/no-light cause on Viking sealed burners: if the cap is rotated off its locating pins or carbonized ports block the gas, the electrode sparks into a spot the gas can't reach, so it clicks without catching. We confirm the cooktop is cool, clear the ports with a fine wire (never a toothpick that can snap off), and reseat the correct cap flush on the correct base before condemning any electrical part, a $0 check that clears many single-burner no-spark complaints.
• Before we condemn any spark part on a Viking range, the serial gets checked against two verified recall windows because a no-spark or self-sparking complaint can sit on a safety-gated unit. The first is the 2015 CPSC action on roughly 60,000 gas ranges (certain VGIC/VGCC/VGSC freestanding models) whose burners could turn on by themselves when liquid seeped into the control area, the recall most relevant to a self-sparking/no-spark ignition complaint, routed to Viking's recall line at (877) 929-2581. The second is the 2022 recall of about 3,050 5-Series VGR/VGIC units built Aug 10 to Dec 1, 2021, for gas-tubing joints that could separate and leak, routed to its own line at 888-566-2512. A genuine ignition-component fix proceeds normally, but we serial-check first so a recall-eligible unit goes to the correct Viking free-repair program rather than a billed part.

Viking no spark (igniter failure) in Toronto — the local specifics

• The recurring Toronto pattern on Viking no-spark is that it splits cleanly between a single dead position and a whole-top failure: one burner clicking-but-not-lighting almost always traces to that position's PA020028 electrode or PA020011/PA020015 spark switch, while every burner ticking (or constant clicking with knobs off) points at the shared PA020047/PA020041 module or a moisture-shorted switch. The single most common avoidable Viking call we see in the GTA is continuous clicking after a boil-over or a wet wipe-down, a dry-out fix, not a failed module, so we prove which pattern it is before any part leaves the van.
• We carry the model-confirmed surface-burner spark electrode (PA020028 / AP5315182) and the burner spark/ignitor switch (PA020011 / AP5315171, or PA020015 / AP3160646 by fitment) to these calls, plus the matched re-ignition spark module (PA020047 / AP5315193 or PA020041 / AP5315188 verified to the unit). The integrated VGSU burner-base assembly (PB050033) and any ignitor wire harness (PE070711/PE070671 family) are order-in items we confirm before the visit rather than stock on the truck.

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 no spark (igniter failure) guide.