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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 D
EWALT technician
or your dealer.
Problem Code
Compressor does not start or restart ..............................................................................................16,17,18,19,20,36
Unit does not or is slow to come up to speed ................................................................................3,8,11,12,14,15,20,21,22,24,25,31
Air compressor not making enough air............................................................................................1,3,7,8,9,10,11,21,24,25,28,29
Insufficient pressure at air tool or accessory ..................................................................................1,3,7,8,9,10,11,21,24,25,27,28,29
High oil consumption........................................................................................................................2,6,9,10,11,12,15,30,32
Unit runs excessively hot ................................................................................................................1,2,4,5,10,11,12,13,15,19,30
Excessive starting and stopping ......................................................................................................7,20,21,24,25,29
Excessive noise during operation ..................................................................................................2,3,4,5,8,9,10,11,12,15,25,29,30,31
Moisture in discharge air..................................................................................................................34,35
Moisture in crankcase or "milky" appearance in petroleum lubricant or rusting in cylinders ..........6,7,9,10,15,25,26,33,35
Oil in discharge air (oil pumping) ....................................................................................................2,6,8,9,10,11,15,31,32
Oil leaking from shaft seal................................................................................................................12
Safety relief valve "pops" ................................................................................................................22,23
Air leaks at pump ............................................................................................................................24,25
Air leaks at fittings ............................................................................................................................25
Air leaks from tank ..........................................................................................................................26
Abnormal piston ring or cylinder wear ............................................................................................2,4,5,6,9,10,11,13
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