General Problem: No Output
Problem
Power switch is on and sprayer is plugged
in but pump does not cycle.
Motor runs but pump does not cycle.
Motor does not run.
General Problem: Excessive Pressure Build Up
Problem
Prime/Spray valve actuates automatically,
relieving pressure through drain tube.
46
Cause
See Basic Troubleshooting, page 41.
Gear and/or yoke are damaged.
Water or paint entered pressure control
switch or shorted control board.
Cause
Pressure control switch is worn.
Water or paint entered pressure control
switch or shorted control board.
Control board failed.
Basic Troubleshooting
Solution
Replace gear and yoke using Gear/Yoke
Repair Kit, page 79.
Clean out and/or dry out and retry. Replace if
necessary using Pressure Control Switch
Kit, page 79.
Solution
Replace pressure control switch using
Pressure Control Switch Kit, page 79.
Clean out and/or dry out and retry. Replace if
necessary using Pressure Control Switch
Kit, page 79.
See Control Board Diagnostics, page 74.
Replace damaged control board using
Control Board Kit, page 79.
313860A