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English
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 D
eWALT technician or
your dealer.
Problem Code
Excessive air tank pressure-safety valve pops off ......................................................................1, 2
Air leaks ....................................................................................................................................3
Air leaks in air tank or at air tank welds ....................................................................................4
Air leaks between head and valve plate ....................................................................................5
Air leaks from safety valve.........................................................................................................6
KnockingNoise ..........................................................................................................................6
Pressure reading on the regulated pressure gauge drops when an accessory is used ...........7
Compressor is not supplying enough air to operate accessories..............................................8, 9, 10, 11, 12
Regulator knob has continuous air leak ....................................................................................13
Regulator will not shut off air outlet ...........................................................................................13
Motor will not run .......................................................................................................................14, 15, 16, 17, 18, 19
Troubleshooting Codes
CODE POSSIBLE CAUSE POSSIBLE SOLUTION
1 Pressure switch does not shut off motor when compressor
reaches cut-out pressure
Set the On/Off switch to OFF, if the unit does not shut
off contact a D
e
WALT factory service center or a D
e
WALT
authorizedservicecenter.
2 Pressure switch cut-out too high Contact a D
e
WALT factory service center or a D
e
WALT
authorizedservicecenter.
3 Tube fittings are not tight enough Tighten fittings where air can be heard escaping. Check
fittings with soapy water solution. Do Not Overtighten.