Toro TBC WP User's Manual And Installation Instructions page 10

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Station Fails to Start
No programmed station run time.
Modify program to include station run time.
The On-Off mode is activated.
Enable irrigation by deactivating On-Off mode.
Low battery power.
Replace the batteries.
Improper wire connection.
Verify the wire connections. If necessary, redo the splices and connectors.
TBC WP
TM sensor input is active.
If a rain sensor is not installed, verify that Sensor A & B wires are connected
together. If a sensor is installed, verify proper operation of that sensor.
Short circuit in the solenoid or the wiring to the solenoid.
TBC WP
Verify with TM
If a short is detected, replace the solenoid and/or wiring to the solenoid.
Improper solenoid operation.
Repair or replace solenoid.
Station stops when it should start or vice versa
Station wires are reversed.
Verify that the DC Latching solenoid's colored wire is connected to the
TBC WP
TM station wire. Verify that the black solenoid wire is connected to the
TBC WP
TM common (C) terminal.
Solenoid is out of phase with the controller.
Reset the controller. During the start-up, the controller will synchronize with
the solenoid.
Programmer that a short was detected on the station.