Landa HOT 2-1100, Service Manual

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HOT SERVICE MANUAL • 8.917-210.0 • Rev. 09/17A
PRESSURE WASHER Troubleshooting Guide
4
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
BURNER
LIGHT WILL
NOT LIGHT
Disconnected or short
in electrical wiring All wire contacts should be
clean and tight. No breaks in wire.
Burner motor thermal
protector tripped If tripped, check voltage, connections, and
extensions for cause. Check fuel pump shaft
rotation for binding causing motor to overheat.
Flex-coupling slipping on fuel
pump shaft or burner motor shaft Replace
if needed.
ON-OFF Switch defective Check continuity through burner switch.
Heavy sooting on coil and burner,
can cause interruption of air flow
and shorting of electrodes Clean
as required.
Improper
electrode setting Clean and test according to
diagram in Operators 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 turned on Turn on water to activate burner flow switch.
Fuel solenoid malfunction Remove, test for continuity
and replace as needed.
Fuel solenoid malfunction Replace if needed.
Pressure switch malfunction Test for proper operation. Replace if needed.
PUMP MOTOR
STOPS AFTER A
FEW MINUTES OF
OPERATION OR
STARTS SLOW
Insufficient
voltage Use heavier drop cord and check
voltage at receptacle. Check
name plate for amperage draw.
Plugged nozzle Remove and clean nozzle. Turn on water
pump, flush lines, and replace nozzle.
Wrong spray nozzle See serial plate for minimum nozzle size.
Automatic overload
switch tripped Allow motor to cool - then
push Red reset button.
Motor wet Allow to dry.
Short in electrical wiring Wire contacts should be
clean and tight. No breaks in wires.
Coil liming up causing
excessive pressure See section on
Preventative Maintenance.
Water pump low or out of oil
causing the pump to bind up Fill to
correct level.