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