Glow-bar (hot surface) oven igniter: amp draw test

In gas ovens the glow-bar igniter is wired in series with the oven safety valve. The valve opens only when enough current flows, so a weak igniter can glow and still not open the valve. Measure amps, not just glow.

Cross-checked ~30 min moderateBrands: All

Before you start

Smell gas: stop, leave, call the gas utility
Gas valve, regulator and orifice work is blocked: refer to a licensed gas technician
The igniter is fragile and very hot; never touch the element
Live-voltage tests: use a CAT III-rated meter, insulated probes and one hand; keep the other hand away from the chassis

Diagnostic steps

Unlock all 4 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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