Corrective action – Gasboy CFN Series Diagnostic Manual User Manual
Page 227

Pump Control Unit
12/26/02
6-37
Pump Dispenses Fuel But Records Zero or Incorrect Quantity
Possible Cause
Checks
Corrective Action
Price on pump doesn't match
level 0 price (or fallback price)
in system.
If the pulser is mounted on
the computer's money wheel,
check if the price per
gallon/liter matches the
fallback price shown with the
PRint PUmp command.
If the price at the pump
doesn't match the fallback
price, correct the price where
necessary.
Pump is configured with the
wrong pulser units.
If the pulser is on the money
wheel, the pulser units should
be configured for $. If the
pulser is on the quantity
wheel, the pulser units should
be configured for G. This can
be checked under the RATE
column of the PRint PUmp
command.
The configuration location for
SC I is Table 24 offset
18+((pump number -1) x 4).
Set bit 6 for $, clear bit 6 for
G. For SC II, use pump menu
#1.
Pump is configured with
wrong pulser divisor.
The pulser divisor should be
twice the number of pulses
per unit of the pulser. This
can be checked under the
RATE column of the PRint
PUmp command.
For SC I, the two bytes
beginning at Table 24 offset
19+((pump# -1) x 4)
determine the pulser divisor.
This is a decimal number.
For SC II, call GASBOY
Technical Service.
Too many pulses per minute.
The PPC cannot process
more than 30,000 pulses per
minute.
Make sure the maximum
pump flow rate multiplied by
the pulses per unit does not
exceed 30,000 pulses per
minute.
Incorrect jumper settings on
PPC I/O board.
Check the PPC I/O board
jumpers K1 through K5
against the Installation
Manual.
Correct the jumper settings.
(Continued)