DeWalt DP3100 Instruction Manual page 19

(Troubleshooting Codes cont.)
CODE POSSIBLE CAUSE
17 Spray wand not in low pressure.
18 Chemical filter clogged.
19 Chemical screen not in cleaning solution.
20 Chemical too thick.
21 Worn seal or packing.
22 Chemical build up in chemical injector.
23 Worn or obstructed valves.
24 Worn unloader piston.
25 Worn or broken o-ring.
26 Loose hose connection.
27 Piston packings worn.
28 Pump head or tubes damaged from freezing.
POSSIBLE SOLUTION
See Spray Wand Nozzles under Operation.
Clean filter.
Make sure end of chemical hose is fully submerged into cleaning
solution.
Dilute chemical. Chemical should be the same consistency as water.
Have parts cleaned or replaced by authorized service center.
Have replaced by an authorized service center.
Have replaced by authorized service center.
Have replaced by authorized service center.
Check and replace.
Tighten.
Have replaced by authorized service center.
Have replaced by authorized service center.
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