North Star pressure washer troubleshooting

Sometimes pressure washers can break down due to improper operation and you will have to ask for help to the master for repair. But you can try to repair the fault within a short period your own resources with the help of the troubleshooting.

North Star 157596 pressure washer troubleshooting

SYMPTOMSCAUSESREMEDIES
The water pump will not startThe motor thermic protection is openCheck the mains voltage (+/- 5% tolerance). Check the phases in the plug are connected well.
The machine is not going in TOTAL STOP mode (unit in by-pass)The no-return valve does not sealReplace the valve or the gasket and check the pressure valve body wear.
Leakage from the water system of the gunEliminate the leaks
The water pump does not reach maximum pressureNozzle wornReplace the nozzle
Pressure ball or adjustment housing worn or spring brokenReplace the faulty part
Pressure valve gaskets wornReplace the valve gaskets
Pistons seal gasket wornReplace the gaskets
Nozzle holding head in position low pressureTurn the head on high pressure
Strong vibrations on the water pumpWater supply insufficient Alien matter under a check valveCheck the water supply flow and the relative pressure (2+10)
Check the water filter and clean it if necessary
Prime the pump without the lance Check the valves, clean and reassemble
The burner will not startDiesel filter blocked Diesel nozzle blocked Worn or broken electrodes The pressure switch remains openClean the filter Clean the filter Replace the electrodes Replace the pressure switch
Anormal noise of Diesel pumpLow dieselFill diesel tank or work on cold wal
No detergent suctionHigh viscosity of the employed detergentFurther dilute the detergent Clean the filter
Detergent filter blocked

North Star M157309M.1 pressure washer troubleshooting

SYMPTOMSCAUSESREMEDIES
Engine Will Not StartLow Oil ShutdownFill engine with the adequate amount of oil.
Cold EngineChoke engine to start.
No FuelAdd gas to engine, make sure fuel shutoff valve is open.
Dead BatteryRecharge/Replace battery.
Spark plug wire not attachedAttach spark plug wire to spark plug.
Pressure Washer Runs But Burner Doesn’t FireI leat switch turned OFFTurn heat switch ON.
Thermostat set too low or offSet thermostat to desired temp.
Fuel tank emptyFill fuel tank with kerosene, diesel or fuel oil.
Dead battery or no batteryInstall, recharge or replace battery
Defective BurnerCall Product Support.
Pressure Washer Runs But No PressurePartially clogged or damaged nozzleClean or replace nozzle.
Low water flowMake sure the water supply is more than 2.5 gpm.
Pressure Washer Surges Or Cycles While In BypassLeak between unloader and gun.Check all connections between unloader and gun for leaks. Tighten loose components and replace damaged components.
Gun leaking internallyReplace spray gun.
Smoke From Heat ExchangerEngine not at full throttleThrottle engine all the way up.
Air band not adjusted properlyAdjust the air band until the burner bums cleanly. See Installation Instructions
Poor quality fuelUse kerosene for the cleanest bum.
Water Not Heating SufficientlyScale build-up in coilSee Coil Descaling under Maintenance Instructions.
Coil is full of sootSee Coil Desooting under Maintenance Instructions.
Poor Or No Detergent SupplyInadequate detergent supplyRefill detergent container. Make sure chemical strainer is fully submerged.
High pressure hose too longUse less hose. Move machine closer to the work.
Chemical strainer or injector cloggedClean the strainer and injector. Always start with a clean detergent container. Run clean water through the injector after each use.

North Star M157305G pressure washer troubleshooting

SYMPTOMSCAUSESREMEDIES
Pressure Washer Will Not Run - No PowerMachine not plugged inPlug machine in
GFCI trippedMake sure machine is dry Press RESET on the GFCI
Machine turned OFFTurn Pump switch ON
Line circuit breaker trippedCheck for tripped circuit breaker in building
Circuit Breaker Trips During OperationVoltage too lowCheck the voltage
Circuit Breaker OverloadedMake sure to use NEMA specified receptacle
Make sure there is no other equipment using the same circuit - see Specifications
Pressure set too highCheck/adjust pressure setting on unloader
Pressure Washer Runs But No PressurePartially clogged or damaged nozzleClean or replace nozzle
Low water flowMake sure the water supply is more than the required flow
Pressure Washer Surges Or Cycles While In BypassLeak between pump and gunCheck all connections between pump and gun for leaks Tighten loose components and replace damaged components
Gun leaking internallyReplace spray gun
Smoke From Heat ExchangerAir band not adjusted properly due to different elevationAdjust the air band until the burner burns cleanly.
Poor quality fuelUse Kerosene for the cleanest bum
Water Not Heating SufficientlyScale build-up in coil
Coil is full of soot
Poor Or No Detergent Supply Inadequate detergent supplyRefill detergent container
Make sure the chemical strainer is fully submerged
High pressure hose too longUse less hose
Move machine closer to the work
Chemical strainer or injector cloggedClean the strainer and injector. Always start with a clean detergent container. Run clean water through the injector after each use.