www.fuellock.ca
November 2021 Version 3.0
Page 32
Blank screen
• If the LED Indicator light to the left of the screen is lit, check that the electrical con
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nections to the screen are secure and try restarting the device
• Check that the system status light on the circuit board is blinking indi
-
cating the device is powered and operating
• If the system status light is not blinking, check that there is power to the
24VAC input terminals of the circuit board and that none of the fuses
on the circuit board are blown
• Check that the circuit breaker powering the unit has not tripped and
that 120/240V is present at the device
Note: A spare fuse for 120V power is provided in the fuse holder
next to the 120/240V connections.
Unresponsive screen
• Check that the electrical connections to the screen and keypad are
secure
• Try restarting the device by interrupting power at the circuit breaker, in extreme
cold conditions the screen may be slow to respond
No power to Fuel Lock
• Check that the breaker is on and not tripped
• Consult with an electrician to ensure the proper power is being sup
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plied to the Fuel Lock device
Screen, keypad, and LED indicator
light are all off (with power to
device)
• Check the 2 amp glass fuse on the bottom right of the circuit board
and ensure it has not blown.
• Open the fuse holder on the terminal strip and ensure the 2A fuse has
not blown.
• Check if the system status light located near the top center of the
main circuit board is flashing green. If the light is flashing, the main
circuit board has power and the problem is likely with the screen or
keypad.
Screen shows pump is unlocked,
but pump will not operate.
Ensure the correct power supply is unlocked—Fuel Lock devices have
two individually controlled contactors to switch power to pumps.
If the contactors do not click when unlocked, check that the two leftmost
2A fuses on the bottom of the circuit board are not blown.
Troubleshooting
Issue
Solution
