28
PHW SERIES PRESSURE WASHER
OPERATOR’S MANUAL
LANDA PHW • 9/02
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
BURNER WILL
NOT LIGHT
(continued)
Heavy sooting on coil and burner
can cause interruption of air flow
and shorting of electrodes.
Clean as required.
Improper electrode setting Clean and set according to diagram in Operator's
Manual.
Fuel not reaching combustion
chamber
Check fuel pump for proper flow. Check solenoid flow
switch on machines with spray gun control for proper
on-off fuel flow control.
Clogged burner nozzle Replace.
Water not flowing through flow
switch
Open spray gun to allow water to flow.
Flow switch malfunction Remove reed and test for continuity. Replace if needed.
Fuel solenoid malfunction Replace if needed.
UNIT SMOKES Improper fuel or water in fuel Drain tank and replace contaminated fuel.
Improper air adjustment Readjust air bands on burner assembly.
Low fuel pressure Call technical support.
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 and burner assembly
Remove coils and burner assembly. Clean thoroughly.
Misaligned electrode Call technical support.
Obstruction in smoke stack Check for insulation blockage or other foreign objects.
LOW WATER
TEMPERATURE
Improper fuel or water in fuel Drain fuel tank and replace with proper fuel.
Low fuel pressure Increase fuel pressure.
Weak fuel pump Check fuel pump pressure. Replace pump if needed.
Fuel filter partially clogged Replace if needed.
Soot build-up on coils Clean coils with soot remover.
Lime build-up in coils Clean inside of coils with coil clean.
Improper burner nozzle See tank assembly parts list for correct nozzle.
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