MDE-4813D CFN PLUS Installation Manual · February 2018
65
Fault
Probable Cause
Checks
Corrective Action
Mechanic pump does not refuel (Continued)
Device limit was
passed
Verify that the device is
within the limits of its
rule.
For testing only, remove
any rule associated to this
device.
Device was set as
Driver
1.
Log in to FHO and go
Devices Management.
2.
Select the specific
device and check if it
was configured as
Driver.
Change the device setting
to Vehicle.
Payment device
(card, key, tag,
Fuel Ring) is not
accepted
Device is blocked
1.
Log in to FHO and go
to Devices
Management.
2.
Check the status of the
device in the Status
column in the Devices
grid
(blocked/unblocked).
Change device status to
Unblocked.
Pump is Authorized and refueling but volume remains zero
Pump is refueling
but volume
remains zero
Pulse factor is zero
Check SO pump setup.
Change Pump Settings to
correct the factor for the
relevant pump.
Faulty MPI-C board
Faulty pulser
Disconnect the pulser and
short the pulse-in wires to
simulate pulses.
If pulses are received
during refueling, replace
pump pulser.
If not, replace MPI-C
board.
No control on refueling
Pump is refueling
without any
control
Pump is in bypass
Verify that CFN PLUS
bypass switch is OFF.
Turn bypass switch OFF, if
ON.
Faulty SSR
Replace the relevant SSR
unit inside the CFN PLUS.
If an external relay
is used to control
the pump/valve, it
may be stuck due to
a small current leak.
Add a snubber (cap
resistor) in parallel to relay
input.