HOTSY 555HE • 9.808-140.0 • Rev. 10/19
11
PRESSURE WASHER Troubleshooting Guide
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSES
CORRECTIVE ACTION
PUMP MOTOR WILL
NOT RUN
GFCI tripped
Reset and test GFCI with every use. Follow
instructions on GFCI device.
No voltage to machine
Test power supply and correct.
Pump motor reset switch (thermal
overload protector) tripped
Push reset switch on control box, thermal
overload protector. If tripped, check for proper
voltage or clogged pressure nozzle.
Excessive pressure due to clogged
pressure nozzle
Clean pressure nozzle.
PRESSURE WASHER
RUNS BUT WON’T
SPRAY
Trigger of trigger gun released
Squeeze trigger.
Water supply not turned on
Open water supply valve.
Clogged pressure nozzle
Clean pressure nozzle opening.
LOW SPRAY PRES-
SURE AT PRESSURE
NOZZLE
Inlet water screen clogged
Check screen and clean if necessary.
Inadequate water supply
Fully open faucet. Check for kinked or dam-
aged hose. Use 5/8 inch minimum hose.
Check for debris clogging inlet screen.
Partially clogged or damaged pres-
sure nozzle
Clear or replace.
Air being drawn through detergent
inlet line
Refill detergent container. Ensure that pick-
up screen is fully immersed.
POOR OR NO
DETERGENT FLOW
Inadequate detergent supply
Refill detergent container. Ensure that pick-
up screen is fully immersed.
Detergent screen or hose clogged
Clean. Always start with a clean detergent
container.
Clogged detergent injector check
valve
Clean check valve at detergent injector inlet.
Detergent injector not set correctly
Refer
To Clean
for settings.
UNEVEN SPRAY
PATTERN
Partially clogged or damaged pres-
sure nozzle
Clean or replace.
PRESSURE WASHER
WILL NOT PRODUCE
HOT WATER
Burner switch in OFF position
Place switch in ON position
Inadequate fuel supply
Refill fuel tank. Use only recommended fuels.
Refer to
Before Starting
under
Operation.
Pump switch turned off
Pump motor must be running before burner
will light.
Inadequate water supply
Fully open faucet. Check for kinked or dam-
aged hose. Use 5/8 inch minimum hose.
Check for debris clogging inlet screen.