User's Manual

Troubleshooting
332144C 27
Troubleshooting
Pump Control Status Codes
Determine the status code by counting the number of
times the system status indicator blinks. The status indi-
cator will blink 1-19 times to indicate a status code.
Multiple active status codes are separated by a longer
duration pause.
Status Code 1: Pressure Imbalance
NOTE: The unit does not check for pressure imbalance
at setpoints less than 300 psi (2.1 MPa, 21 bar).
NOTE: The unit does not check for pressure imbalance
for 10 sec after entering pressure mode.
Unit senses pressure imbalance between components
ISO and RES, and warns or shuts down, depending on
settings of DIP switches 1 and 2. To turn off automatic
shutdown and/or tighten pressure tolerances for status
code 1, see DIP Switch Settings, page 29.
1. Reduce pressure of higher component by slightly
turning Recirc/Spray valve for that component
toward Recirc, until gauges show balanced pres-
sures.
2. If pressure imbalance continues, see Proportioner
Troubleshooting, page 36.
Status Code 2: Pressure Deviation from
Setpoint
NOTE: The unit does not check for pressure deviation at
setpoint less than 400 psi (2.8 MPa, 28 bar).
Unit senses pressure deviation from setpoint, and warns
or shuts down, depending on settings of DIP switches 3
and 4. If equipment cannot maintain enough pressure
for a good mix with an impingement mix gun, try using a
smaller mix chamber or nozzle.
To turn off automatic shutdown and/or change pressure
tolerances for status code 2, see DIP Switch Settings,
page 29.
Deviation can occur if power is turned on if function
knob (AV) is not set to Park/Off. Leave knob in Park/Off
mode until status indicator LED turns on.
Status Code 3: Pressure Transducer ISO
Failure
1. Check transducer ISO electrical connection (J11) at
board, page 45.
2. Reverse ISO and RES transducer electrical connec-
tions at board, page 45. If error moves to transducer
RES (Status Code 4), replace transducer ISO, page
50.
Status Code 4: Pressure Transducer RES
failure
1. Check transducer RES electrical connection (J12)
at board, page 45.
2. Reverse ISO and RES transducer electrical connec-
tions at board, page 45. If error moves to transducer
ISO (Status Code 3), replace transducer RES, page
50.
Status Code 5: Excessive Current Draw
1. Shut off unit and retry operation. Brushes may not
be fully seated.
2. Check fan operation. Elevated temperature can
cause excessive current draw.
3. Locked rotor; motor unable to turn. Replace motor,
page 53.
4. Short on control board. Replace board, page 44.
5. Worn or hung up motor brush causing arcing of
brush at commutator. Replace brushes, page 54.
6. Disconnect motor connections from the control
board. Cycle power.
a. If status code 5 is still present, replace the
board.
b. If status code 5 is not active, test motor. See
Test Motor, page 53.
In this example, RES side
pressure is higher, so use
the RES side valve to bal-
ance pressures.