HUNTER X CORE TROUBLESHOOTING GUIDE
The Controller is continually
watering
Too many start times have been
programmed
Only one start time in necessary to
activate a program
The display reads "NO AC"
There is no AC power present, or the
controller is not receiving any power
Check to see if the transformer is
properly installed
Rain sensor will not shut off the
system
Verify operation of rain sensor and
proper wiring
Jumper was not removed when
sensor was installed
Remove jumper from the sensor
terminals
Stations have been programmed to
override the sensor
Reprogram the sensor override to
enable the sensor
Display shows ERR with a
number (1-8)
Short in valve wiring circuit, or faulty
solenoid on the station number
indicated
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
Frozen display or showing
incorrect information
Faulty pump relay or master valve
wiring
Check wiring to relay or master valve
solenoid. Press any button to clear
the error
Incompatible or defective relay or
solenoid
Check electrical specification for the
pump relay. Do not exceed
controllers electrical rating. Replace
defective
Undersized wire to the pump relay or
master valve
Seasonal Adjust Seems to high
Region too low
Water Adjustment setting too high
Decrease the value of the Water
Adjustment setting. If you minimize
the Water Adjustment scale at 1 and
still require reduced seasonal
adjustment, move up one Region.
Solar Sync will immediately update
the Seasonal Adjust on the
controller. If it is still too high, repeat
the adjustment until the desired
seasonal adjust is showing on the
controller
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