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21
TROUBLESHOOTING PRESSURE ISSUES
Problem Probable Cause Remedy
Downstream
injector will not
siphon chemical.
Adjustable knob on
injector is closed (Where
applicable)
Open by turning counter clockwise.
Unit not in low pressure
mode.
Open dual wand or install low pressure
(BLACK) tip.
Detergent hose cut or
kinked.
Inspect hose, replace as required.
Chemical Strainer plugged
or not submerged.
Check screen on strainer pickup tube.
Internal injector parts
corroded or stuck.
Disassemble, clean or replace.
Outlet water temperature
too high.
Use with cold water (150ยบ Maximum)
Pressure relief
Valve expelling
water
Unloader failure / coil
overheating / Excessive
pressure
Turn machine off wait a few minutes and
restart. If problem continues take to an
authorized repair center for complete
system check.
TROUBLESHOOTING OIL FIRED BURNER SYSTEMS
Problem Probable Cause Remedy
Burner will not
fire.
WARNING:
High voltage on
igniter can cause
electrical shock.
Disconnect
power before
servicing.
Burner switch not on. Turn switch on; Thermostat on if
equipped.
Diesel fuel level low. Fill burner tank with #2 diesel or other
approved fuel.
Trigger on spray gun not
pulled.
Squeeze trigger to fire burner.
Fuel filter plugged. Clean and / or tighten fuel filter. (Check
fuel pressure)
Spray nozzle plugged. Clean spray nozzle.
Burner will not
fire.
WARNING:
High voltage on
igniter can cause
electrical shock.
Disconnect
power before
servicing.
Overload on burner motor
tripped.
Reset overload, locate and correct
source of overload.
Nozzle not in wand. Install nozzle in wand.
Low water pump pressure. See pumping systems trouble shooting.
Fuel pump or nozzle
stopped.
Check fuel pressure, filter, fuel lines.
Replace fuel pump and/or nozzle.
Vacuum, Flow, Pressure or
Temperature switch faulty.
Check electrical continuity with pump
spraying and burner on.
Fuel solenoid valve faulty. Replace fuel valve if it does not open
when power is applied.
Low generator voltage
output.
Adjust generator RPM for proper
voltage under full load conditions.
Burner relay faulty (12-V
Burner only)
Replace burner relay.
Burner will not
fire, and diesel
fumes are
emitted from the
exhaust port.
WARNING:
Replace
insulation.
Unburned fuel
can saturate it
and cause a fire.
Fuel to air ratio out of
adjustment.
Set air band and fuel pressure to
specs.
Fuel nozzle partially clogged. Replace nozzle of proper size.
Ignition transformer not
providing spark to fuel.
Replace ignition transformer, clean and
adjust electrodes.
Fuel to air ratio out of
adjustment.
Set air band and fuel pressure to
specs.
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