Landa SDHW5-3000, Operator'S Manual, Page: 25 / 30

SDHW SERIES PRESSURE WASHER
OPERATOR’S MANUAL
25
LANDA SDHW • REV. 12/02
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
BURNER WILL NOT
LIGHT cont.
Thermostat faulty or slow engine
speed Increase engine RPM to increase
voltage.
Flow switch malfunction Remove, test for continuity and replace
as needed.
Flow solenoid malfunction Replace if needed.
MACHINE 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 Adjust fuel pump pressure to
specifications. Call local Landa Dealer.
Plugged, dirty or faulty burner nozzle
causing incorrect spray pattern
Replace nozzle.
Heavy accumulation of soot on coils
and burner assembly
Remove coils and burner assembly,
clean thoroughly. Call local Landa
Dealer.
Misaligned electrode setting Realign electrodes to specifications.
Obstruction in smoke stack Check for insulation blockage or other
foreign objects.
Low engine RPM Increase RPM. See serial plate for RPM.
BURNER MOTOR WILL
NOT RUN
Fuel pump seized Replace fuel pump.
Burner fan loose or misaligned Position correctly, tighten set screws.
Defective control switch Replace switch.
Loose wire Check and replace or tighten wiring.
Defective burner motor Replace motor.
LOW WATER
TEMPERATURE
Improper fuel or water in fuel Replace with clean and proper fuel.
Low fuel pressure Increase fuel pressure.
Weak fuel pump Check fuel pump pressure. Replace
pump if needed.
Fuel filter partially clogged Replace as needed.
Soot buildup on coils not allowing
heat transfer
Clean coils. Call local Landa Dealer.
Improper burner nozzle See breakdown for model.
WATER
TEMPERATURE
TOO HOT Incoming water to machine warm or hot Lower incoming water temperature.
Fuel pump pressure too high Call local Landa Dealer for proper fuel
pressure.
Fuel pump defective Replace fuel pump.
Detergent line sucking air Tighten all clamps. Check detergent
lines for holes.
Defective high limit switch Replace.
Incorrect fuel nozzle size See breakdown for model.
Insufficient water supplied Check water G.P.M. to machine.
Restricted water flow Check serial plate for proper size.
(For parts and information call your Landa Dealer)