I’m using an air trap, but why is condensate not being removed as expected?
Is the trap designed for use with a pressure-balancing line? If the displacement of the air inside the trap by the inflowing condensate is not taking place as it should, condensate can no longer flow into the trap and the discharge of condensate from the trap will cease completely. A pressure-balancing line will prevent this from occurring. The air inside the trap is released through the pressure-balancing line when condensate flows into the trap, allowing the condensate to be discharged smoothly.