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309412 5
Troubleshooting
Relieve pressu re; page 4.
PROBLEM CAUSE SOLUTION
E=XX is displayed Fault condition exists Determine fault correction from table, page 14.
Engine won’t s tart Engine switch is OFF Turn engine switch ON
Engine is out of gas Refi l l gas tank. Honda Engi nes Owner’ s Manual.
Engine oil level is low Try to start engine. Replenish oil, if necessary.
Honda Engines Owner’s Manual.
Spark plug cable is disconnected or damaged Connect spark plug c able or replace spark
plug
Cold engine Use choke
Fuel shutoff lever is OFF Move lever to ON position
Oil is seeping into combustion chamber Remove spark plug. Pull starter 3 to 4 times.
Clean or replace spark plug. Start engine.
Keep sprayer upright to avoid oil seepage.
False tripping of Watch-
Dog system. EMPTY is
displayed. Pump does
not run.
Operating conditions out of WatchDog parameters Turn pressure down. Contact Graco Technical
Assistance to adjust WatchDog parameters.
Operate without WatchDog active; Manual
309408.
Low pump output. See Troubleshooting Table, Pump Outlet Low,
page 6.
Engine operates, but
displacement pump
does not operate
Error code displayed? Determine fault correction from table, page 14.
Pump switch is OFF TurnpumpswitchON.
Pressure setting is too low Turn pressure adjusting knob clockwise to
increase pressure.
Fluid filter (318) is dirty Clean filter. Page 20.
Tip or tip filter is clogged Clean tip or tip filter. Manual 309091.
Displacement pump piston rod is stuck due to dried
paint
Repair pump. Manual 309277.
Connecting rod is worn or damaged Replace connecting rod. Page 15.
Drive housing is worn or damaged Replace drive housing. Page 9.
Electrical power is not energizing clutch field Check wiring connections. Page 11.
Reference pressure control repair. Page 13.
Reference wiring diagram. Page 21.
With pump switch ON and pressure turned to
MAXIMUM, use a test light to check for power
between clutch test points on control board.
Remove 7--pin connector from control board
and measure resistance across clutch coil. At
70_ F, the resistance must be between 1.7
±0.2Ω ; if not, replace pinion housing.
Have pressure control checked by authorized
Graco dealer.