ESP-ME3 Controller
17
EN
Electrical Issues (solid LED illuminated)
Problem Possible Cause Possible Solution
Display is blank or frozen,
the controller will not accept
programming or is operating
abnormally.
Power not reaching the controller. Verify the main AC power supply is securely plugged in or connected and working
properly.
Controller needs to be reset. Press the Reset Button. For details see “Reset Button” section.
An electrical surge may have
interfered with the controller’s
electronics.
Unplug the controller for 2 minutes, then plug it back in. If there is no permanent
damage, the controller should accept programming and resume normal operation.
Automatic error detection
indicates a problem by ALARM
LED and an error message on
display.
Short circuit or overload condition
in valve, master valve or pump start
relay wiring.
Identify and repair the fault in the wiring. Refer to compatible pump start relays. For
details see “Connect Pump Start Relay” section.
LED is flashing or solidly illu-
minated but I see no message
on the LCD.
Dial not in AUTO RUN position. Turn dial to AUTO RUN position. Push Reset button or power cycle the controller.
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