Flotronic One-Nut - Troubleshooting; Power LED Not Illuminated; Fault LED Flashing; Pump Does Not Stop

Troubleshooting
Problem Probable Cause Solution
Power LED not illuminated
and system does not
function
Power failure Check power supply lead for
damage.
Confirm unit is receiving power.
Main Control Unit fault Contact Flotronic Pumps Ltd for
advice.
Fault LED flashing Diaphragm failure Strip pump and check for
diaphragm failure or the presence
of liquid in the air chamber.
Sensor Fault Check sensor cable for damage.
Plug sensors into main control
unit.
Perform sensor check on page 10
to confirm sensor function.
Main Control Unit fault Perform full system check to
establish definite fault with unit
and not legitimate liquid sensing.
Contact Flotronic Pumps Ltd for
advice.
Pump does not stop when
fault LED is flashing
Solenoid valve fault Check solenoid cable for damage.
Check solenoid valve is not faulty.
Check solenoid valve complies
with the requirements stated in the
Technical section of this manual.
Main control Unit fault Contact Flotronic Pumps Ltd for
advice.
Pump does not run Power failure Restore power to the main control
unit and press the Reset button.
Air supply failure Check air supply to the pump
Pump failure Strip and assess the pump in
accordance with the pump
IOM.