DeWalt D55168 Instruction Manual page 17

CODE POSSIBLE CAUSE POSSIBLE SOLUTION
4 Defective air tank
Air tank must be replaced. Do not repair the leak.
&WARNING: Risk of bursting. Do not drill into, weld or
otherwise modify air tank or it will weaken. The air tank can
rupture or explode.
6 Defective safety valve Operate safety valve manually by pulling on ring. tf vatve still
leaks, it must be replaced.
8
Prolonged excessive use of air
Hole in air hose 10
Decrease amount of air usage•
Replace air hose.
12 Air leaks Tighten fittings.
14 Motor overload protection switch has tripped Refer to Motor Overload Protection under Features.
17