A method of wirelessly transmitting alarm condition information is applicable to an irrigation zone including a zone input conduit connected to a main distribution conduit of the irrigation system. The zone further includes a zone distribution conduit, a zone valve connected between the zone input conduit and the zone distribution conduit, and at least one irrigation emitter connected in the zone distribution conduit. The method includes detecting an alarm condition at the irrigation zone, and at a designated time proximate to one of a start time and an end time for to an irrigation session for the irrigation zone, controlling the zone valve according to a zone valve control sequence corresponding to the detected alarm condition. The zone valve control sequence comprises a predefined pattern of open and closed states of the zone valve over time.
