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24 313289S
Alarm Codes and Troubleshooting
Alarm
Code Alarm Problem When Active Cause Solution
General Performance Alarms
R4B Ratio High B (Overdose B),
system delivering too much B
component.
Spray B Dosing valve not closing. Perform Pump Test to test for
leakage. See Pump and Meter-
ing test in manual 312359.
Loosen valve packing nut.
Check air signal at valve top
Repair valve or air solenoid.
See Replace Solenoid Mod-
ule, page 32.
No B restriction at mix manifold. Increase B Restriction by turn-
ing B restrictor stem clockwise.
See Adjust B Mix Manifold
Restriction in manual 312359.
Pump filter plugged on A side. Clean filter. See manual
311762.
Use alternate 30 mesh screen.
See manual 311762 for part
number.
Inlet air dropping below 80 psi
(0.55 MPa, 5.5 bar) while spray-
ing. B dosing valve not closing
correctly.
Check air filters. See Air Con-
trols, page 40.
Use larger air hose.
Use larger compressor.
Use smaller gun tips or less
guns to reduce flow rate.
Solenoid air regulator set below
80 psi (0.55 MPa, 5.5 bar)
Adjust air regulator.
R1B Ratio Low B (under dose B);
system delivering not enough
B component.
Spray B dosing valve will not open. Check for air signal to valve.
B mix manifold valve closed. Open green mix manifold valve.
Pump filter plugged on B side. Use alternate 30 mesh screen.
See manual 311762 for part
number.
Clean B pump outlet filter. See
manual 311762.
REC System detected five R4B
(ratio high B) or five R1B
(ratio low B) alarms within five
minutes. Sprayer shuts down
for five minutes to resolve
problem.
Spray See R4B or R1B alarm causes. See R4B or R1B alarm solu-
tions. Flush mixed material if
necessary, and purge off-ratio
mixed material in hose.
FHA
FHB
System detects pump move-
ment (fluid flow) when valves
are closed.
Spray Recirculation valve or dosing
valve open or leaking for more
than 5 seconds.
Close or repair recirculation
valve, and run Pump Test. See
Pump and Metering test in man-
ual 312359. See Mix Manifold
Assembly, page 42.
R2D Dosing sizes are not opti-
mized.
Spray Dosing valve is operating near
high or low timing limits.
Adjust mix manifold B restrictor
stem clockwise or counter
clockwise as indicated by bar
graph on restrictor screen. See
Adjust B Mix Manifold Restric-
tion in manual 312359.