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Causes
Low Oil Shutdown
Cold Engine
No Fuel
Dead Battery
Spark plug wire not attached
Causes
Heat switch turned OFF
Thermostat set too low or off
Fuel tank empty
Defective Pressure Switch
Defective Burner
Causes
Partially clogged or damaged nozzle
Clogged water filter
Low water flow
Causes
Leak between unloader and gun.
Gun leaking internally
Causes
Air band not adjusted properly
Poor quality fuel
Causes
Scale build-up in coil
Coil is full of soot
Causes
Soap control knob set too low.
Inadequate detergent supply
High pressure hose too long
Chemical strainer or injector clogged
Any Questions, Comments, Problems, or Parts Orders
Troubleshooting Guide
Engine Will Not Start
Solutions
Fill engine with the adequate amount of oil.
Choke engine to start.
Add gas to engine, make sure fuel shutoff valve is open.
Recharge/Replace battery.
Attach spark plug wire to spark plug.
Pressure Washer Runs But Burner Doesn't Fire
Solutions
Turn heat switch ON.
Set thermostat to desired temp.
Fill fuel tank with kerosene, diesel, or fuel oil.
Call Product Support.
Call Product Support.
Pressure Washer Runs But No Pressure
Solutions
Clean or replace nozzle.
Clean water filter.
Make sure the water supply is more than 4 gpm.
Pressure Washer Surges Or Cycles While In Bypass
Solutions
Check all connections between unloader and gun for leaks.
components and replace damaged components.
Replace spray gun.
Smoke From Heat Exchanger
Solutions
Adjust the air band until the burner burns cleanly. See Installation Instructions
Use kerosene for the cleanest burn.
Water Not Heating Sufficiently
Solutions
See Coil Descaling under Maintenance Instructions.
See Coil Desooting under Maintenance Instructions.
Poor Or No Detergent Supply
Solutions
Adjust soap control knob.
Refill detergent container. Make sure chemical strainer is fully submerged.
Use less hose. Move machine closer to the work.
Clean the strainer and injector. Always start with a clean detergent container. Run
clean water through the injector after each use.
Call NorthStar Product Support 1-800-270-0810
13
Tighten loose
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