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PROBLEM
PUMP MOTOR WILL
NOT RUN.
NO WATER SPRAYS
FROM WATER
NOZZLE.
LOW PRESSURE
FROM WATER
NOZZLE.
POOR OR NO
DETERGENT FLOW.
BURNER WILL
NOT IGNITE WHEN
TRIGGER GUN
IS OPEN.
BURNER SMOKES
OR HAS
OBNOXIOUS ODOR.
16
TROUBLESHOOTING
POSSIBLE CAUSES
GFCI tripped.
No voltage to machine.
Pump motor reset button (thermal
overload protector) tripped.
Excessive pressure due to clogged
water nozzle.
Water nozzle completely clogged.
Inlet water screen clogged.
Pump sucking air.
Inlet water screen clogged.
Water nozzle worn or incorrect size.
Water supply low.
Pump sucking air.
Low detergent level.
Detergent screen clogged.
Detergent valve not opening.
Water nozzle clogged.
Excessive inlet pressure
(more than 80 PSI).
Defective pressure switch.
No fuel.
Fuel valve closed.
Thermostat set too low.
Burner motor reset button (thermal
overload protector) tripped.
Clogged fuel filter.
Air intake adjustment needs to be
adjusted.
Improper fuel.
Manual Hotsy, 700 Series • 9.808-301.0
CORRECTIVE ACTION
Reset and test GFCI with every use. Follow
Instructions under Operation.
Test power supply and correct.
Push reset button on control box. If tripped,
check for proper voltage or clogged water
nozzle.
Clean water nozzle.
Clean water nozzle.
Check screen and clean if necessary.
Fill the detergent container and check for
loose hose clamps or fittings.
Check screen and clean if necessary.
Replace nozzle with proper size.
Correct water supply.
Fill the detergent container and check for
loose hose clamps or fittings.
Fill the detergent container.
Clean if necessary.
Check that handle or knob is not slip-ping
on shaft.
Clean water nozzle.
Install pressure regulator on the inlet line.
Replace pressure switch.
Fill fuel tank with proper fuel.
Check that fuel valve on fuel tank is open.
Raise thermostat setting.
Push reset button on burner motor.
If tripped, check for proper voltage.
Clean fuel filter.
Readjust air intake per the oil burner section
of this manual.
Use proper fuel.
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