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Advanced Troubleshooting
309477F 17
General Problem: No Output
Specific Problem Cause Solution
Power switch is on and sprayer
is plugged in but pump does
not cycle
See Basic Troubleshooting,
page 9.
Motor runs but pump does not
cycle
Gear and/or yoke are damaged
(XR9 only)
Replace gear and yoke using Gear/Yoke Repair
Kit, page 18.
Motor does not run Water or paint entered
pressure control switch or
shorted control board
Clean out and/or dry out and retry. Replace if
necessary using Pressure Control Switch Kit,
page 18.
General Problem: Excessive Pressure Build Up
Specific Problem Cause Solution
Prime/Spray Valve actuates
automatically, relieving
pressure through drain tube.
Pressure control switch is worn Replace pressure control switch using Pressure
Control Switch Kit, page 18.
Water or paint entered
pressure control switch or
shorted control board
Clean out and/or dry out and retry. Replace if
necessary using Pressure Control Switch Kit,
page 18.
Control board failed See Control Board Diagnostics, page 19.
Replace damaged control board using Control
Board Kit, page 18.