Troubleshooting Guide - Hunter X-CORE Owners Manual And Programming Instructions

TROUBLESHOOTING GUIDE

Problem
The controller is continuously watering
There is no display
The display reads "No AC"
Display reads "Off, "
Rain sensor will not shut off the system
Frozen display, or showing incorrect
information
Display shows "ERR" with a number
(1 to 8)
Display shows "P ERR"
30
Causes
Too many start times have been
programmed
Check AC power wiring
There is no AC power present (the
controller is not receiving any power)
The rain sensor is interrupting irrigation
or the sensor jumper has been removed
• Defective rain sensor
• Jumper was not removed when sensor
was installed
• Stations have been programmed to
override the sensor
Power surge
Short in the valve wiring circuit, or
faulty solenoid on the station number
indicated
• Faulty pump relay or master
valve wiring
• Incompatible or defective relay or
solenoid
• Undersized wire to the pump relay or
master valve
Solutions
Only one start time is necessary to activate a program
(refer to Setting the Program Start Times on page 18)
Correct any errors
Check to see if the transformer is properly installed
Slide the rain sensor bypass switch to the BYPASS
position to bypass the rain sensor circuit, or reinstall
the jumper
• Verify operation of rain sensor and proper wiring
• Remove jumper from the sensor terminals
• Reprogram the sensor override to enable the sensor
(see page 11)
Reset the controller per page 24 "Clearing Controller
Memory/Resetting the Controller"
Check wire circuit or solenoid for the valve number
indicated. Repair short or replace solenoid. Press any
button to clear the "ERR" from the display
• Check wiring to relay or master valve solenoid. Press
any button to clear the "P ERR" from the display
• Check electrical specification for the pump relay.
Do not exceed controller's electrical rating. Replace
if defective
• Replace wire with larger gauge wire