Why is my burner making a gurgling noise when it is operating?

​​​​​​If a protective cover (burner cover and/or fire pit cover) is not being used when the unit is not in operation, it is possible that heavy rains have caused water to enter the burner flex-line. Allow the unit to operate for 30 minutes. If problem persists or if burner is not operating properly, contact OGC for further assistance.