tech_support October 28, 2019 Hi Mark, Your vent needs to be cleaned; there is dirt in the valve mechanism and it's not closing tight. Isolate it, remove and clean it out. Depending on the type of cap on your vent; you may want to replace the cap. Reply
Hi Mark,
Your vent needs to be cleaned; there is dirt in the valve mechanism and it's not closing tight. Isolate it, remove and clean it out. Depending on the type of cap on your vent; you may want to replace the cap.