NorthStar M157310C, Installation, Operation And Maintenance Manual, Page: 17 / 23

17
Troubleshooting Guide
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 f uel shutoff valv e 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 f uel tank with kerosene, diesel, or f uel oil.
Def ectiv e Burner Call Customer Service.
Pressure Washer Runs But No Pressure
Causes Solutions
Partially clogged or damaged nozzle Clean or replace nozzle.
Low water f low 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 f or 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 f uel Use kerosene f or the cleanest burn.
Water Not Heating Sufficiently
Causes Solutions
Scale build-up in coil See Coil Descaling under Maintenance Instructions.
Coil is f ull 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 Ref ill detergent container. Make sure chemical strainer is f ully submerged.
High pressure hose too long Use less hose. Mov e machine closer to the work.
Chemical strainer or injector clogged Clean the strainer and injector. Alway s start with a clean detergent container. Run
clean water through the injector after each use.
Any Questions, Comments, Problems or Parts Orders
In the United States In the United Kingdom
NorthStar Customer Service
Call 02392639752
Call 1-800-270-0810 Northern Tool and Equipment Co. (UK) Ltd.
Hours: Monday - Friday 7:00 AM to 5:30 PM Unit 2, Keel Close,
Saturday 7:30 AM-11:30 AM Central Time Portsmouth, Hants PO3 5QD, England