DeWalt DPD3100 Instruction Manual page 20

(Troubleshooting codes cont.)
coDe PossIBLe cause
26 Loose hose connection.
27 Piston packings worn.
28 Pump head or tubes damaged from freezing.
29 Air filter filled with oil.
PossIBLe soLutIon
Tighten.
Have replaced by authorized service center.
Have replaced by authorized service center.
Clean air filter element. Refer to engine instruction manual for
correct procedure.
20