North Star pressure washer troubleshooting

North Star 1573001 pressure washer troubleshooting

ProblemSolution
Motor will not startSOLUTION: A,B
Low/Surging pressure or no water flowSOLUTION: C,D,E,F,G,H
No chemical injectionSOLUTION: I,J,K,L
CauseSolution
A- Tripped GFCI cordReset GFCI cord
B- Tripped motor relayReset motor
C- Insufficient water supplySee water supply section of this manual
D- Plugged pump inlet filterSee maintenance section of this manual
E- Wrong nozzleMake sure high pressure nozzle is being used
F- Plugged nozzleRemove nozzle, check for blockage
G- Worn nozzleReplace nozzle
H- Leak in pressure hoseReplace pressure hose
I- Wrong nozzleMake sure chemical nozzle is being used
J- Back pressure from extra long discharge hoseTry shorter hose
K- Leak in chemical siphon hoseReplace hose - use hose clamps if necessary
L- Chemical strainer not submergedMake sure strainer is completely submerged

North Star M157305Y pressure washer troubleshooting

CausesSolutions
Pressure Washer Will Not Run At All • No Power
Machine turned OFFTurn Pump switch ON
Line circuit breaker trippedCheck for tripped circuit breaker in building
Circuit Breaker Trips
Voltage too lowCheck the voltage
Circuit Breaker OverloadedMake sure there is no other equipment using the same circuit.
Pressure set too highCheck/adjust pressure setting on unloader.
Pressure Washer Runs but No Pressure
Voltage too lowCheck the voltage
Circuit Breaker OverloadedMake sure there is no other equipment using the same circuit.
Pressure set too highCheck/adjust pressure setting on unloader.
Low Pressure
Low water flowMake sure the water supply is more than 4 gpm
Partially clogged or damaged nozzleClean or replace nozzle
Smoke from Heat Exchanger
Air band not adjusted properlyAdjust the air band until he burner bums cleanly. See installation Instructions.
Poor quality fuelUse kerosene for the cleanest bum.
Pressure Washer Runs But Surges Or Cycles While In Bypass
Leak 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
Poor Or No Detergent Supply
Soap control knob set too low.Adjust soap control knob
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 hose cloggedClean the strainer. Always start with a clean detergent container
Clogged injectorClean injector check valve or replace injector. Run clean water through the injector after each use.

North Star M157551A pressure washer troubleshooting

ProblemCauses
LOW/SURGING PRESSURE
Plugged nozzleRemove nozzle, check for blockage and clean if necessary
Worn nozzleReplace nozzle (#3.5)
Pluqaed inlet screenPull screen out carefully and clean
Unloader valve malfuncationRepair/replace unloader
Restrictive water supplyUse larger diameter water supply hose and/or hose fittings
Insufficient flow of water to the pumpIncrease water flow. Check for kinked or pinched water supply hose.
Leak in high pressure hoseCheck connecions. Replace if cracked or punctured.
NO CHEMICAL INJECTION
Operating at high pressurePush nozzle forward for low pressure
Back presure from extra long hoseDon’t use additional hose. Use larger chemical nozzle.
Chemical injector turned offTurn chemical adjustment knob ON
Chemical injector pluggedRemove injector and soak in bucket of water to dissolve blockaqe
Leak in clear chemical hoseReplace hose. Use hose clamps to seal the hose around hose baits
Chemical strainer not submerged in chemical solutionMake sure strainer is completely submerged in solution.
Excess Vibration
Tire pressureIncrease or decrease the tire pressure to 20 psi.
Loose boltsTighten bolts

North Star M157595AG pressure washer troubleshooting

CausesSolutions
Engine Will Not Start
Low Oil ShutdownFill engine w ith 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 W asher Runs But Burner Doesn't Fire
Heat 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.
Defective Pressure SwitchCall Product Support.
Defective BurnerCall Product Support.
Pressure Washer Runs But No Pressure
Partially clogged or damaged nozzleClean or replace nozzle.
Clogged water filterClean water filter.
Low water flowMake sure the water supply is more than 4 gpm.
Pressure Washer Surges Or Cycles While In Bypass
Leak 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 Exchanger
Air band not adjusted properlyAdjust the air band until the burner bums cleanly. See Installation Instructions
Poor quality fuelUse kerosene for the cleanest burn.
Water Not Heating Sufficiently
Scale build-up in coilSee Coil Descaling under Maintenance Instructions.
Coil is full of sootSee Coil Desooting under Maintenance Instructions.
Poor Or No Detergent Supply
Soap control knob set too low.Adjust soap control knob.
Inadequate 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 Ranger 157394 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 water pump will not enter in bypassThe 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 fault) 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-HO)
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 open Safety thermostat is openClean the filter Clean the filter Replace the electrodes Replace the pressure sw itch Replace the safety thermostat
Anormal noise of Diesel pumpLow dieselFill diesel tank or work on cold water
No detergent suctionHigh viscosity of the employed detergentFurther dilute the detergent Clean the filter
Detergent filter blocked

Error codes and troubleshooting