Graco 24G952 Instructions - Parts Manual page 23

Problem
Level sensor is not sensing
material when material is
present.
3A1299K
Cause
Level sensors out of calibration.
Intermittent electrical connections.
FCM errors.
Solution
Calibrate level sensor.
Replace level sensor.
Ensure the system main power is ON.
Ensure all electrical connections to the level
sensor are secure. See electrical schematic
in either the HFR or VRM Repair-Parts man-
ual.
Check tank stand circuit breaker in GMS
power distribution box to see if it has
tripped. See electrical schematic in either
the HFR or VRM Repair-Parts manual.
Check FCM circuit breaker in base cube to
see if it has tripped. See electrical schematic
in either the HFR or VRM Repair-Parts man-
ual.
Check FCM. A red LED indicates a problem
with the module. See electrical schematic in
either the HFR or VRM Repair-Parts man-
ual.
Replace FCM.
Troubleshooting
™
23