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Maintenance
Troubleshooting
SYMPTOM
ENGINE WILL NOT RUN
NO WATER FROM
PRESSURE NOZZLE
POOR OR NO
DETERGENTFLOW
LOW PRESSURE FROM
SPRAY NOZZLE
UNLOADER VALVE CYCLES
WHEN TRIGGER GUN IS
OPEN OR CLOSED
BURNER WILL NOT
IGNITE WHEN TRIGGER
GUN IS OPEN
BURNER SMOKES OR HAS
OBNOXIOUS ODOR
18
POSSIBLE CAUSES
No fuel
Low battery
Poor battery cable connection
Refer to provided engine manual for additional troubleshooting
Pressure nozzle clogged
Inlet water screen clogged
Pump sucking air
Low detergent level
Detergent screen clogged
Detergent metering valve not
opening
Pressure nozzle clogged
Inlet clogged
Spray nozzle worn or incorrect
size
Inadequate water supply
Pump sucking air
Air in system
Defective unloader valve
Water leak between unloader
valve and trigger gun
No fuel
Adjustable thermostat set too low Raise temperature setting.
Defective pressure switch
Electrodes are dirty or out of
adjustment
No AC generator output
Air bands need to be adjusted
Improper fuel
Hotsy Gas Belt Drive Series Operator's Manual 8.931-236.0 - BD
CORRECTIVE ACTION
Replenish supply.
Charge battery.
Clean battery terminals and check cables.
Clean pressure nozzle.
Clean.
Fill the detergent container. Check for loose
hose clamps or fittings.
Replenish supply.
Clean.
Check that handle or knob is not slipping on
shaft.
Clean.
Clean.
Replace.
Increase water supply.
Fill the detergent container. Check for loose
hose clamps or fittings.
Open and close trigger gun several times.
Repair or replace.
Check fittings, hose and trigger gun for leaks.
Repair or replace.
Replenish supply.
Repair or replace.
Refer to Oil Burner Manual provided with
machine.
Check AC generator.
Readjust. Refer to Oil Burner Section under
Installation.
Use kerosene, #1 Grade Home Heating Oil, #1
or #2 Diesel Fuel.
DO NOT USE GASOLINE.
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