A gas oven that lights, glows orange, but never heats — or just stays cold from the start — almost always points to one of four parts. This guide walks the diagnosis order our gas-certified techs use on Atlanta service calls.
Important: gas oven repair involves a live gas line. We never recommend DIY work on the gas valve or igniter beyond visual inspection. Follow the safety steps in each section.
Place an oven thermometer in the centre of the oven and set 350°F. Wait 20 minutes after the preheat-complete chime.
For calibration drift (oven heats but runs cool), see the calibration section on our Atlanta oven repair page.
The bake igniter is a ceramic-and-tungsten element that glows orange when energised. It must reach a specific temperature (about 1100°F) to open the safety gas valve. After 6–10 years, the igniter weakens — it still glows but does not get hot enough to open the valve. The oven looks like it is starting up, then nothing happens.
How to confirm: Open the oven. Watch the igniter (bottom of the oven cavity, behind a metal plate). A healthy igniter glows bright white-orange. A failing igniter glows dim orange or amber. Replacement is $30–$60 for the part and 30–45 minutes labour.
The safety gas valve has a small bimetal sensor that opens when the igniter has heated to ignition temperature. If the valve sensor fails or sticks, the gas never reaches the burner even though the igniter is glowing.
This is harder to diagnose without a gas-specific multimeter, and gas valve replacement is always a tech-only repair. Cost: $80–$160 for the part plus a flat-rate gas-line labour charge.
A one-time thermal fuse protects the oven from overheating during a self-clean cycle. If the cycle ran abnormally hot, the fuse trips and cuts power to the heating circuit even though the rest of the oven still works (lights, clock, fan).
Atlanta context: over-reliance on the self-clean cycle (every 30 days instead of every 6 months) is the #1 trigger we see for tripped fuses. The cycle pushes the cavity to 850°F and stresses the fuse near its trip point. We replace the fuse and counsel reduced self-clean frequency.
The electronic control board sends the start signal to the igniter and gas valve. If the board has a relay failure or a firmware lockout, the igniter never energises and you see no glow at all.
Visual confirmation: lights work, clock works, but the igniter never comes on when bake is selected. Board replacement is the most expensive of the four ($180–$420) — we always test the igniter and gas valve first to rule them out.
For the full pricing breakdown across all four causes, our Atlanta oven repair page covers each scenario including parts costs and labour windows. For brand-specific igniter patterns, see GE oven repair Atlanta or Whirlpool oven service team.
Licensed gas appliance technicians. Igniter, gas valve, thermal fuse, and control board work all under one visit when possible.
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