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Troubleshooting Guide
This section provides a list of the more frequently encountered malfunctions, their causes and corrective actions. The operator or maintenance personnel can perform some corrective actions, and others may require the assistance of a qualified DeWALT technician or your dealer.
Problem | code | 
Engine will not start  | 1, 2, 3, 4, 5, 6, 7, 8  | 
(refer to the engine's instruction manual for further engine troubleshooting)  | 
  | 
No or low pressure (initial use)  | 9, 10, 11, 12, 13, 14, 15, 16  | 
Will not draw chemicals  | 16, 17, 18, 19, 20, 21  | 
No or low pressure (after period of normal use)  | 22, 23, 24  | 
Water leaking at gun/spray wand connection  | 25, 26  | 
Water leaking at pump  | 25, 26, 27, 28  | 
Oil leaking at pump  | 29, 30, 31, 32, 33, 34, 35  | 
Pump Pulsates  | 12  | 
18