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Advanced Troubleshooting
General Problem: Output is Low or Fluctuating (continued)
SPECIFIC PROBLEM
CAUSE
SOLUTION
Spray pattern has
variations, pressure
fluctuates excessively, or
motor runs very slowly.
Leads from motor to control board are
damaged, loose, or overheated.
Be sure terminals are centered and firmly
connected. Inspect wiring insulation and terminals
for signs of overheating, and replace any loose
terminals or damaged wiring. Securely reconnect
terminals.
Pressure control switch leads are pinched
between pump and drive housing or between
front cover and drive housing.
Make sure pressure control harness is routed
behind pump, through retention clip, and
connected to control board connector at back of
drive housing (connected with tab to the right).
Control board is damaged.
CAUTION:
Do not perform control board
diagnostics until you have determined that the
armature is good. A bad motor armature can
burn out a good control board.
See
Control Board Diagnostics
on page 32. If
damaged, replace control board using
Control
Board Kit
243228.
Pressure control switch is damaged or worn
out.
Replace pressure control switch using
Pressure
Control Switch Kit
244267.
General Problem: There is No Output
SPECIFIC PROBLEM
CAUSE
SOLUTION
Power switch is on and
sprayer is plugged in but
See
Basic Troubleshooting
page 22.
sprayer is plugged in, but
pump does not cycle.
Motor runs, but pump does not
cycle.
Gear and/or yoke are damaged.
Replace gear and yoke using
Gear/Yoke Repair
Kit
245062.
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
244267.
