Troubleshooting
F
Problem
Display blank .
Some valves do not
operate .
No valves operate .
Watering on wrong
day .
Current time is wrong
and flashing .
"FUS" and a station
number alternates with
current time .
Valve will not turn off
(with Function Switch .
in the OFF position) .
"SEN" alternates with
time of day .
36
Possible Cause
No power .
Faulty or improper
valve wire connections .
Debris in valve .
Function switch OFF .
Faulty valve common
wire connection .
Sensor switch in Active
position–no sensor or
jumper connected .
No start time set .
Watering day schedule
set incorrectly .
Power interruption
without battery backup .
Short or over-current
on valve station .
Valve malfunction .
Watering on hold due
to sensor operation .
Correction
Check transformer/
power connections, 2A
fuse, and AC power .
Check and correct all
valve wire connections .
Inspect, clean/replace
valve solenoid/plunger
and diaphragm .
Set switch to Run .
Check/correct valve
common connection .
Set switch to Bypass or
install terminal jumper .
Set Program start time .
Correct watering day
schedule as needed .
Install/replace battery,
reset current time .
Check/replace valve
solenoid and splices .
Inspect, clean/replace
valve solenoid/plunger
and diaphragm .
Normal operation for
sensor . Set Sensor
switch to Bypass .