Just brought Qlima gas heater with flame effect. It starts out ok, but after few hours, the flames turn blue and the heater turns off.

Any ideas why this is happening?

  • Does it have a CO2 sensor? to turn it off if the level gets too high?
    – Solar Mike
    Commented Jan 7, 2020 at 17:29
  • 1
    Any reason for the down vote? Since the question describes a problem I reversed it.
    – Ed Beal
    Commented Jan 8, 2020 at 15:17

1 Answer 1


According to Qlima website, the heater is equipped with oxygen depletion sensors (ODS). These sensors can tell how much oxygen is left in the air. If the oxygen level decreases then this activates the sensor and the gas shuts off to the logs.

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