HOTSY 680SS • 8.914-368.0 • Rev. 02/15
13
PRESSURE WASHER Troubleshooting Guide
TROUBLESHOOTING
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
PUMP MOTOR WILL
NOT RUN
GFCI tripped
Reset and test GFCI with every use.
Follow Instructions under
Operation
.
No voltage to machine
Test power supply and correct.
Pump motor reset button (thermal
overload protector) tripped
Push reset button on control box. If
tripped, check for proper voltage or
clogged water nozzle.
Excessive pressure due to clogged
water nozzle
Clean water nozzle.
NO WATER SPRAYS
FROM WATER
NOZZLE
Water nozzle completely clogged
Clean water nozzle.
Inlet water screen clogged
Check screen and clean if necessary.
Pump sucking air
Fill the detergent container and check for
loose hose clamps or fi ttings.
LOW PRESSURE
FROM WATER
NOZZLE
Inlet water screen clogged
Check screen and clean if necessary.
Water nozzle worn or incorrect size
Replace nozzle with proper size.
Water supply low
Correct water supply.
Pump sucking air
Fill the detergent container and check for
loose hose clamps or fi ttings.
POOR OR NO
DETERGENT FLOW
Low detergent level
Fill the detergent container.
Detergent screen clogged
Clean if necessary.
Detergent valve not opening
Check that handle or knob is not slip-
ping on shaft.
Water nozzle clogged
Clean water nozzle.
Excessive inlet pressure
(more than 80 PSI)
Install pressure regulator on the inlet
line.
BURNER WILL NOT
IGNITE WHEN
TRIGGER GUN IS OPEN
Defective pressure switch
Replace pressure switch.
No fuel
Fill fuel tank with proper fuel.
Fuel valve closed
Check that fuel valve on fuel tank is
open.
Thermostat set too low
Raise thermostat setting.
Burner motor reset button (thermal
overload protector) tripped
Push reset button on burner motor. If
tripped, check for proper voltage.
Clogged fuel fi lter
Clean fuel fi lter.
BURNER SMOKES
OR HAS
OBNOXIOUS ODOR
Air intake adjustment needs to be
adjusted
Readjust air intake per the oil burner
section of this manual.
Improper fuel
Use proper fuel.
