What you are actually seeing
- No click and no flame on one burner
- The burner lights on one side and travels round slowly
- The flame goes out when the knob is released
- A yellow, lazy or sooty flame
- Not this fault: A cooktop that lights but an oven that does not
Ranked causes on a Conservator gas range
- Spark electrode or ignition module failed — Ranked here because: this platform is mechanical by design, so wear parts and couplings fail as parts rather than as symptoms of a board
- Flame-failure device not sensing — Ranked here because: these ranges are frequently converted between natural gas and LP, and a conversion error presents as a burner fault
- Burner cap misaligned or on the wrong burner — Ranked here because: these machines are commonly installed by the owner or the delivering dealer, and levelling and venting errors are the most frequent finding
- Gas supply off, low or the cylinder empty — Ranked here because: a simple machine gives the owner more ways to load and dose it wrong, and those show up as faults
What to check, and in what order
- Dry the burner heads, the caps and the spark electrodes thoroughly
- Try every burner and note whether one is affected or all of them
- Clean the burner ports with a soft brush and a wooden toothpick, then rinse and dry
- Note whether the burner stays lit only while the knob is held in
Steps you can safely do yourself
- Clean the burner ports with a soft brush and a wooden toothpick, then rinse and dry — Tools: soft brush, wooden toothpick, warm soapy water — Estimated time: about half an hour
- Note whether the burner stays lit only while the knob is held in — Tools: none — Estimated time: a few minutes
- Confirm the shut-off behind the range is open and, on LP, that the cylinder is not empty — Tools: flashlight — Estimated time: about ten minutes
- Lift each burner cap and refit it squarely on its own head — Tools: none — Estimated time: a few minutes
- Dry the burner heads, the caps and the spark electrodes thoroughly — Tools: cloth — Estimated time: about a quarter of an hour
Safety
Safety
gas-smell-evacuate unplug-before-service
When to call a technician
the burner lights only while the knob is held, since that is the flame-failure device the ignition module or a spark electrode has failed every burner is weak or wrong, which points at the regulator, the supply or the conversion
Nearest pages
What this page does not cover
Not this fault: the family pages for the laundry, refrigeration and cooking lines Not this fault: model-specific pages once the model and serial plate is read
Links: - [Common Conservator Gas Stove Problems](/blog/conservator-gas-stove-problems) - [Common Conservator Dishwasher Problems](/blog/conservator-dishwasher-problems) - [Common Conservator Dryer Problems](/blog/conservator-dryer-problems) - [Conservator Gas Stove: Abnormal Noise or Vibration](/blog/conservator-gas-stove-abnormal-noise)
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
