If you hear the solenoid click then you may have a clogged orifice or prefilter. these are both located near the solenoid. the orifice is usually in the feed tube and the filter is in the inlet of the solenoid. Try the orifice first to see if it is clogged. If that is clear the try loosening the compression nut before the solenoid to see if you have water coming to the humidifier some times if a needle valve was used they get bad also. I would recommend changing the needle valve out and putting in a proper side stop valve. Most municipalities do not allow needle valves per there codes.
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If you hear the solenoid click then you may have a clogged orifice or prefilter. these are both located near the solenoid. the orifice is usually in the feed tube and the filter is in the inlet of the solenoid. Try the orifice first to see if it is clogged. If that is clear the try loosening the compression nut before the solenoid to see if you have water coming to the humidifier some times if a needle valve was used they get bad also. I would recommend changing the needle valve out and putting in a proper side stop valve. Most municipalities do not allow needle valves per there codes.