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Jeffrey WeeksAug 10, 2025
What to do if the Dräger Controller H2O red LED is blinking and there's an intermittent audible alarm?
- HHeidi PorterAug 10, 2025
If the Dräger Controller's red H2O LED is blinking, the humidity set value display is blinking, and an intermittent audible alarm is sounding, the issue could be a clogged valve in the water level controller, a closed tubing clamp, kinked or pinched tubing, or an empty water bag. First, close the tubing clamp and empty any remaining water after the cool-off period, then exchange the water level controller. Also, open the clamp, check the tubing for kinks, and replace the water bag if it's empty.