Chattering noise in Flushometer. The inside cover has become distorted from freezing or abuse. Leaking at Handle Assembly. The B-39 Seal may have deteriorated. Valve does not function.
Control stop or main valve is closed.
Open control stop or main valve. Insufficient volume of water to adequately siphon fixture. If no gauges are available to properly measure supply pressure or volume of water at the Valve, then completely remove the entire Diaphragm Assembly and open the control stop to allow water to pass through the empty valve. Valve closes off immediately. Install inside parts kit to correct above problem and update the Flushometer Valve.