Troubleshooting Codes - DeWalt DP3400 Instruction Manual

coDe PossIBLe cause
1 No fuel.
 Low oil.
3 Pressure builds up after two pulls on the recoil starter or after
initial use.
4 Choke lever in the NO CHOKE position.
5 Spark plug wire not attached.
6 Engine ON/OFF switch in OFF position.
7 Choke lever in the CHOKE position on a hot engine or an engine
that has been exposed to thermal heat for a long period of time.
8 Fuel valve closed.
9 Spray wand not in high pressure.
10 Low water supply.
11 Leak at high-pressure hose fitting.
1 Nozzle obstructed.
13 Water filter screen clogged.
14 Air in hose.
15 Choke lever in the CHOKE position.
16 High-pressure hose is too long.

Troubleshooting codes

PossIBLe soLutIon
Add fuel.
Add required amount of oil.
Squeeze gun trigger to relieve pressure.
Move choke to the CHOKE position.
Attach spark plug wire.
Place engine ON/OFF switch in ON position.
Move choke to the NO CHOKE position.
Move the fuel valve lever to the OPEN position.
See spray Wand nozzles under Operation.
Water supply must be at least 5 GPM @ 0 PSI.
Repair leak. Apply sealant tape if necessary.
See nozzle cleaning under Maintenance.
Remove and clean filter.
Turn off the engine, then the water source. Disconnect the
water source from the pump inlet and turn the water source
on to remove all air from the hose. When there is a steady
stream of water present, turn water source off. Reconnect
water source to pump inlet and turn on water source. Squeeze
trigger to remove remaining air.
Move choke to the NO CHOKE position.
Use high-pressure hose under 100 feet (30.48 m). Lengthen water
supply hose instead of high-pressure hose.
19