troubleshooting

problem

possible cause

solution

 

 

 

burner will not

Disconnected or short in electrical

All wire contacts should be clean and tight.

light

wiring

No breaks in wire.

 

 

 

 

Burner motor thermal protector

If tripped, check voltage, connections and

 

tripped

extensions for cause. Check fuel pump

 

 

shaft rotation for binding, causing motor to

 

 

overheat.

 

 

 

 

On/off switch defective

Check continuity through burner switch.

 

 

 

 

Heavy sooting on coil and burner,

Clean as required.

 

can cause interruption of air flow

 

 

and shorting of electrodes

 

 

 

 

 

Improper electrode setting

Clean and test according to diagram in

 

 

operator’s manual.

 

 

 

 

Fuel not reaching combustion cham-

Check fuel pump for proper flow. Check

 

ber

solenoid flow switch on machines with spray

 

 

gun control for proper ON/OFF flow switch.

 

 

 

 

Fuel solenoid malfunction

Check by placing screwdriver inside coil

 

 

then turn machine on, open spray gun and

 

 

check for magnetic pull.

 

 

 

 

Clogged burner nozzle

Replace.

 

 

 

 

Water not turned on

Turn on water to activate burner flow switch.

 

 

 

 

Flow switch malfunction

Remove, test for continuity and replace as

 

 

needed.

 

 

 

Machine smokes

Improper fuel or water in fuel

Drain tank and replace contaminated fuel.

 

 

 

 

Low fuel pressure

Adjust fuel pump pressure to specifications.

 

 

 

 

Air leaks in fuel lines

Check fuel lines for leaks or air bubbles.

 

 

Tighten or replace as needed.

 

 

 

 

Plugged or dirty burner nozzle

Replace.

 

 

 

 

Faulty burner nozzle spray pattern

Replace nozzle.

 

 

 

 

Heavy accumulation of soot on coils

Remove coils and burner assembly. Clean

 

and burner assembly

thoroughly.

 

 

 

 

Misaligned electrode

Realign electrodes to specifications.

 

 

 

 

Fuel filter partially clogged

Replace as needed.

 

 

 

 

Obstruction in smoke stack

Check for insulation blockage or other for-

 

 

eign objects.

 

 

 

 

Soot build-up on coils

Clean coils with soot remover.

 

 

 

 

Lime build-up in coils

Clean inside of coils using coil cleaner.

 

 

 

97-6133 • Rev. 5/07

PRESSURE WASHER Troubleshooting Guide

11

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Shark HP-5030D manual Troubleshooting, Light
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HP-5030D specifications

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