Rain Bird STP-400i, Operation Manual, Page: 17 / 96

15
STPi Controller Operation Manual
Watering Issues
Problem Possible Cause Possible Solution
Automatic and
Manual cycles
do not begin
watering. Water source not supplying water. Make sure the main water line and all supply lines are open and operating properly.
Wires not properly connected. Make sure all field wires and master valve/pump start relay wiring is connected properly.
Wires loose or cut; corroded connections. Check field wiring for broken, cut, or “skinned” wires and replace if necessary. Check all wire connections
and replace with watertight splice connectors as needed.
Dial not set to AUTO position. Make sure the dial is on AUTO position—not any other dial position.
If you have a Rain Sensor, it may be activated. You can either wait until the Rain Sensor dries out, or disconnect the Rain Sensor from the yellow
terminals on the Controller and replace it with a wire connecting the two yellow terminals.
If you do not have a Rain Sensor, the wire
connecting the two yellow Rain Sensor
terminals may be damaged or missing. Connect the two yellow Rain Sensor terminals in the Controller’s terminal bay with a short length of 14
to 18 gauge wire.
An electrical surge may have damaged the
Controller’s electronics. Press the reset button under the wiring cover. If there is no permanent damage, the Controller should
resume normal operation. You will need to input the current time and date, but your watering schedule
should remain intact.
Electrical Issues
Problem Possible Cause Possible Solution
LCD Display is
blank. Transformer not plugged in or wall socket
not supplying power (Red light on the
transformer is not illuminated). Make sure the two-prong connector is connected and the transformer is securely plugged in.
Make sure the main AC power supply is working properly.
LCD Display is “frozen”
and Controller will not
accept programming. An electrical surge may have damaged the
Controller’s electronics. Unplug the Controller for 3 minutes. Plug the Controller back in. If there is no permanent damage, the
Controller will accept programming and resume normal operation.
Troubleshooting
637589-01 Rev 1 (STP user manual (INTL)) source.indd 15 6/26/2008 2:19:06 PM