Troubleshooting Guide
Troubleshooting 
28 333394L
Troubleshooting
Check everything in this Troubleshooting 
Table before you bring the sprayer to an 
authorized service center.
Sprayer Diagnostics
ti24021a
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Problem Cause Solution
Sprayer makes no sound 
when trigger is pulled
Power supply. Verify power to sprayer. 
Motor has overheated. Wait 20-30 minutes for motor to 
cool. 
Electronic control failure. Replace electronic control.
Sprayer makes sound but 
no material is sprayed 
when trigger is pulled
Sprayer is not primed. Prime the pump. See Starting a 
New Job, page 8.
Make certain there is only one 
FlexLiner in the cup support.
Make certain the cup cover is 
properly threaded to the cup 
support. If threads are visible 
below the cup cover when tight, 
fully remove and reinstall to the 
cup support so no threads are 
visible when tight.
Make certain the cup cover is 
tightened to cup support so the 
arrow on cup cover is within 
range of indicator on cup 
support.
Make certain the cup assembly is 
properly locked on the sprayer.
Make certain all the air is out of 
the FlexLiner and the VacuValve 
is properly closed.
Clean VacuValve reservoir and 
air hole. See , page 17.
Clean Sprayer. See Cleanup, 
page 15.
Prime Pump/Spray knob is in PRIME 
PUMP position.
Turn Prime Pump/Spray knob 
forward to SPRAY position. 
Spray tip is not in SPRAY position. Turn spray tip to SPRAY 
position.
Spray tip is clogged. See Unclogging Spray Tip, 
page 20.
Debris in paint. See Strain the Paint, page 8.









