Troubleshooting Guide - NorthStar M157310C Installation, Operation And Maintenance Manual

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
Def ectiv e Burner
Causes
Partially clogged or damaged nozzle
Low water f low
Causes
Leak between unloader and gun.
Gun leaking internally
Causes
Air band not adjusted properly
Poor quality f uel
Causes
Scale build-up in coil
Coil is f ull 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
In the United States
NorthStar Customer Service
Call 1-800-270-0810
Hours: Monday - Friday 7:00 AM to 5:30 PM
Saturday 7:30 AM-11:30 AM Central Time

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 f uel shutoff valv e 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 f uel tank with kerosene, diesel, or f uel oil.
Call Customer Service.
Pressure Washer Runs But No Pressure
Solutions
Clean or replace nozzle.
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 f or 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 f or 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.
Ref ill detergent container. Make sure chemical strainer is f ully submerged.
Use less hose. Mov e machine closer to the work.
Clean the strainer and injector. Alway s start with a clean detergent container. Run
clean water through the injector after each use.
In the United Kingdom
Call 02392639752
Northern Tool and Equipment Co. (UK) Ltd.
Unit 2, Keel Close,
Portsmouth, Hants PO3 5QD, England
Tighten loose
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