22
Maintenance
Troubleshooting
PROBLEM
POSSIBLE CAUSE
SOLUTION
PRESSURE
WILL NOT RUN
Pump switch in OFF position
Place switch in ON position.
Power supply disconnected
Connect power supply.
Fuse blown or circuit breaker tripped in
electrical supply line
Replace fuse or reset circuit breaker.
Use only fuses of adequate capacity.
Motor circuit overload tripped
Reset pump switch.
PRESSURE
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
PRESSURE
AT NOZZLE
Inadequate water supply
Fully open faucet. Check for kinked or
damaged hose. Use 5/8 inch minimum hose. Check
for debris clogging inlet screen.
Partially clogged or damaged pressure
nozzle
Clean or replace.
Air being drawn through
detergent inlet line
Refill detergent container.
Ensure that pick-up screen is fully immersed.
UNEVEN SPRAY
PATTERN
Partially clogged or damaged 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 must be running before burner will light.
Inadequate water supply
Fully open faucet. Check for kinked or damaged
hose. Use 5/8 inch minimum hose. Check for debris
clogging inlet screen.
Trigger of trigger gun released
Squeeze trigger. Water must be spraying for burner
to light.
POOR OR NO
DETERGENT
FLOW
Inadequate detergent supply
Refill detergent container. Ensure that pick-up
screen is full immersed. Open metering valve.
Detergent screen or hose clogged
Clean. Always start with a clean detergent container.
Clogged detergent valve
Clean.
MACHINE
SMOKES WHILE
BURNER UNIT IS
RUNNING OR
UNIT SMOKES
AT COLD START
ONLY WHEN
BURNER IS OFF
Improper fuel or water in fuel
Drain tank and replace contaminated fuel
Fuel pressure is low <140 psi for burner Adjust fuel pump pressure to specifications
Burner nozzle is plugged or dirty
Replace nozzle. Check parts breakdown
for nozzle size
Burner nozzle spray pattern is faulty
Replace nozzle. Check parts breakdown
for nozzle size
Heavy accumulation of soot on coils
and burner assembly
Remove coils and burner assembly,
clean thoroughly Call local dealer
Misaligned electrode setting
Realign electrodes to specifications
Obstruction in smoke stack
Check for insulation blockage or other
foreign objects
Hotsy 800 OIL FIRED OPERATOR’S 8.921-206.0 - B