Possible Reason: Sealing ring not properly installed Solution: Reposition sealing ring, ensure it is snug behind sealing ring rack   Possible Reason: Float valve in the popped-up position  Solution: Gently press the float valve downward with a long utensil   Possible Reason: Contents in cooker are still hot enough to produce steam Solution: Turn steam release handle towards “Venting” position, then lower lid onto cooker base slowly, allowing heat to dissipate