A sealed burner that clicks but never catches
Often the spark is fine and the trouble sits at the head — a port packed with spillover, a cap knocked off-center, or corroded igniter wiring at the spark module. We clean the ports, true the cap, and replace the module or electrode only when the spark itself has failed.
A propane simmer that lifts or blows out
On ridge homes above the gas main, a Viking burner converted to LP that was never fully tuned roars on high but dies on VariSimmer. We verify manifold pressure, confirm the correct LP brass orifices are fitted, and tune the burner so the low flame holds.
A burner stuck on a weak, orange flame
Estate dust and grease work into the burner ports and the air shutter, starving the flame so it burns lazy and yellow. We pull the cap, clear the ports, and reset the air mix before assuming the valve or orifice has failed.
Oven temperature drifting off the dial
Viking cavities read heat through an RTD sensor; as that probe ages, the oven runs hot or cold against the setpoint — or a tired glow-bar igniter never pulls enough current to open the gas valve. We meter the sensor, test the igniter, replace what has drifted, and recalibrate.
Convection roasting unevenly across the rack
Pale corners and scorched edges point to a worn convection fan motor, a cracked blade, or a bake element feeding the airflow wrong. We restore balanced circulation and check the door hinge and spring so heat is not leaking past a sagging seal.
A built-in refrigerator warming behind its panel
When a Viking column warms while the freezer stays cold, the cause is usually a seized evaporator or condenser fan, a stuck damper, a failed defrost heater that has frosted the coil solid, or a drifting thermistor. We isolate the fault and confirm both compartments hold.