Visually inspect water source: Verify that the water is turned on fully. Verify lines/hoses are free of leaks. Verify lines/hoses are not kinked, crimped, blocked, twisted, or being squeezed by any objects pressing against them.
Good: Proceed to the next step-
Not Good: address the issue, replace as necessary, and recheck the operation. See replacement parts here.
i. Good: issue resolved
ii. Not Good: Proceed to the next step-
Inspect water source output: Start by disconnecting the source line from the first Misting Tee. Is proper flow and pressure present?
Not Good: work backward down the line by disconnecting the line between the filter to the Misters, the filter(s), any line between the filter and source outlet, and any garden hose between the line and source outlet, one at a time to identify the item restricting water flow. Replace as necessary. (If the source outlet itself is restricted, a professional plumber should be contacted. The Mistcooling system is not the issue.) See replacement parts here.
Good: Proceed to the next step-
Inspect filter (if equipped) for debris and replacement schedule. An overdue/dirty filter may still interfere with the operation even if some flow is present.
Not Good: replace the filter. See filtration options here.
Good: There is likely a severe restriction in the output line or nozzles. (at this point in the troubleshooting, this outcome would be extremely rare, as most output side restrictions would cause uneven spraying, not a completely inoperative condition. If this does occur, try removing the end nozzle and input line, and blowing compressed air backward to clear the line. Nozzles can also be removed to see if flow resumes.