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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

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Delta DP3400 instruction manual Troubleshooting Guide, Problem Code