Landa pressure washer troubleshooting

Every owner of Landa pressure washer sooner or later faces the question of maintenance or repair of the unit. The reason for this may be natural run-out of parts and mechanisms or non-compliance with the operating rules. In any case, the breaking can overtake at the most inopportune time. To facilitate the work of the service center specialists and speed up the time of return of the unit into operation, we represent below troubleshooting tables for some models of Landa. These are the most common faults and their underlying causes. They will help you to reveal the problem and significantly reduce the time of the equipment`s diagnostics.

Landa ENG4-2000 pressure washer troubleshooting

Landa ENG4-2000 pressure washer allows you to quickly and thoroughly wash the car even in some hard-to-reach places. To this end, it has special adaptations that allow you to gently wash the vehicle and not to become dirty.

ProblemPossible causeSolution
Water temperature too hotIncoming water to machine warm or hotLower incoming water temperature.
Gas pressure too highSpecifications for proper gas pressure.
Detergent line sucking airTighten all clamps. Check detergent lines for holes.
Defective high limit switchReplace.
Insufficient water suppliedCheck water GPM to machine.
Restricted water flowCheck nozzle for obstruction, proper size.
Presence of water in oilOil seal wornCheck and replace if necessary.
High humidity in airCheck and change oil twice as often.
Water dripping from under pumpPiston packing wornCheck and replace if necessary.
O-Ring plunger retainer worn
Detergent not drawingAir leak Tighten all clamps.Check detergent lines for holes.
Detergent metering valve packing not tight or packing wornTighten nut. Replace valve or packing.
Filter screen on detergent suction hose pluggedClean or replace.
Dried up detergent plugging metering valveDisassemble and clean thoroughly.
High viscosity of detergentDilute detergent to specifications.
Restriction behind float tank screen removedInstall restriction.
Hole in detergent line(s)Repair hole.
Strainer basket pluggedRemove and clean.
Connections on selector valve loosePut teflon tape on all pipe connections.
Detergent solenoid not opening (where applicable)Check flow switch, replace detergent solenoid.
Pump running normally but pressure low on installationPump sucking airCheck water supply and possibility of air.
Valves stickingCheck and clean or replace if necessary.
Unloader valve seat faulty
Worn piston packing
Fluctuating pressureValves worn
Blockage in valve
Worn piston packing
Pump noisyAir in suction lineCheck water supply and connections on suction line.
Broken or weak inlet or discharge valve springs
Excessive matter in valves
Worn bearings
Oil drippingOil seal worn
LowFaulty pressure gaugeInstall new gauge.
Operating pressureInsuffient water supplyUse larger garden hose. Clean filter washer at water inlet.
Old. worn or Incorrect spray nozzleMatch nozzle number to machine and /or replace new nozzle.
Belt SlippageTighten or replace. Use correct belt.
Plumbing or hose leakCheck plumbing system for leaks. Retape leaks with teflon tape.
Faulty or misadjusted unloader valve (where applicable)Adjust unloader for proper pressure. Install repair kit when needed.
Worn packing in pumpInstall new packing kit.
Fouled or dirty inlet or discharge valves in pumpClean inlet and discharge valve.
Worn inlet or discharge valvesReplace with valve kit.
Obstruction in spray nozzleRemove obstruction.
Leaking pressure control valve (where applicable)Rebuild or replace as needed.
Detergent metering valve left open sucking air or faulty metering valveClose and /or replace metering valve.
Slow motor RPMCheck incoming voltage.
Water temperatureLow gas pressureIncrease gas pressure to machine.
Improper pressure regulatorSpecify BTU, building gas pressure 11 w.c.i. to machine for correct sizing of regulator.
Low gas pressureIncrease gas pressure
Soot buildup on coils not allowing heat transferClean coils.
Flow & burner switch on: no spark, no pilot gasA. No main powerWith power switch on, open trigger on spray gun and set your test meter to the 24 volt scale. Probe terminals 24V and 24V(GND). If you do not read 24 volts, the problem is not the ignition system. Perform normal system checks of main power, transformer, thermostat and the limit control. If you do read 24 volts at TH and GND, the problem is in the ignition system. Check for loose or defective wiring. If wiring is good, replace the ignition control unit.
B. Faulty transformer
C. Faulty burner & flow switch
D. Faulty ignition control unit
Have spark, no pilot gas flowMain gas supply turned offSet test meter to 24 volt scale.
1. Be sure main gas valve (gas cock or selector arm) is turned on.
2. With gas on and system sparking, probe terminals PV and 24V(GND). If pilot gas does not flow with 24 volts at these terminals, replace gas valve.
3. Probe terminals PV and MV/PV. If 24 volts not present, replace ignition control box.
Have pilot gas, no sparkA. Defective ignitor/ sensor and or its wiringSet test meter to ohm scale.
1. Disconnect the wire from the IGN terminal on the ignition control unit.
B. Faulty ignition control unit2. Touch one meter probe to the tip of the ignitor/ sensor rod in the pilot. Touch the other probe to the quick connect at the other end of ignitor/ sensor wire.
3. If you have continuity from the tip of the ignitor/ sensor rod to the connector and no spark, replace the ignition control unit.
4. If you do not have continuity through wire and the ignitor/sensor, check for a loose wire connection in the wire. Repair as needed.
5. Check if spark shorts to burner ring through a cut in the ignitor wire.

Landa WATER JET SYSTEM pressure washer troubleshooting

Landa WATER JET SYSTEM pressure washer has a legacy of precision engineering and quality components, making it one of the best known industrial brands of the market.

SPRAY GUN(S) LEAKForeign matter between valve seat and ballRemove foreign matter.
PRESSURE WASHER UNLOADER CYCLESHigh pressure filter or wrong sized nozzles for attached pressure washerRemove and clean out filter, nozzle(s). Check nozzle size.
NOZZLES SPINNING TOO SLOWNot enough water volume for attached pressure washer to rotate nozzlesNeed a larger gpm pressure washer.
NOT CLEANING SURFACEHeight adjustment too high or pressure washer too small for jobLower adjustment knob or attach to larger pressure washer.
ROTATING NOZZLE ARM NOT SPINNING, BEARING NOISEPressure washer too small or bearing low on greaseGet larger gpm pressure washer or grease bearing.

Landa XPERT-HD 2.323 P pressure washer troubleshooting

Quality, innovation and safety are the main reasons to acquire Landa XPERT-HD 2,332 P pressure washer. It is certified to UL-1776 safety norms to assure maximum protection to the pressure washer owner.

LOW OPERATING PRESSUREInsufficient water supply. Closed faucet. Inlet hose kinkedUse larger garden hose; clean inlet water screen. Open faucet.
Clogged inlet hose strainerCheck plumbing system for leaks. Retype leaks with teflon tape.
Faulty or mis-adjusted unloader valveAdjust unloader for proper pressure. Install repair kit when needed. Call local distributor.
Worn packing in pumpCall Dealer Customer Support.
Machine has been stored in freez- ing temperaturesThaw out machine completely, including hose, spray gun and wand.
Slow engine RPMCall local distributor.
FLUCTUATING PRESSUREWorn or dirty pump valves
Nozzle is obstructedBlow out or remove debris with fine needle.
Pump sucking air, inlet hose leakingCheck that all hoses and fittings are airtight. Turn off machine and trigger spray gun until a steady flow of water emerges through the nozzle.
Insufficient water supplyTurn water on full force. Check garden hose for kinks, leaks or blockage.
Unloader valve wornReplace unloader valve.
ENGINE WILL NOT START OR STOPS WHILE OPERATINGLow oil shutdownFill engine with oil.
Out of gasFill fuel tank.
Water in gasolineDrain gas tank; fill with clean fuel.
ENGINE IS OVERLOADEDNozzle partially blockedClean nozzle.
Excessive pressure from high engine RPMAdjust engine throttle to lower RPM.
WATER OR OIL LEAKING FROM BOTTOM OF PUMPA small amount of leaking is normalIf excessive leaking occurs, Call local distributor.
PRESENCE OF WATER IN PUMP OIL (BXD Comet & G Pump Series Only)Water sprayed at machineChange oil. Direct spray away from machine.
High humidity in airCheck and change oil twice as often.
Piston packing worn. Oil seal worn.Call local distributor.
ENGINE OPERATES FOR 15 MINUTES THEN STOPSNot enough gas or engine oilFill tank with gas. Check oil level.
Vapor lock developed by heat of dayKeep gas tank full to avoid vapor locking.
Obstruction in fuel filterClean or replace fuel filter.
ENGINE LACKS POWERDirty air filterReplace air filter.
ENGINE FALTERSChoke is opened too soonMove choke to halfway position until engine runs smoothly.
WATER DRIPPING FROM UNDER PUMPPiston packing wornCall local distributor.
O-Ring plunger retainer worn
Cracked piston
OIL DRIPPINGOil seal worn or damaged
WATER LEAKING FROM PUMP PROTECTORSpray gun closed with machine running 5 minutes or longerOpen spray gun or turn off machine.
Excess water supply pressurePlace a pressure regulator at end of 50' garden hose.
NO DETERGENTDetergent suction tube not properly connected to machineCheck connection.
Detergent is too thickDilute detergent. For best results, use manufacturers detergent.
Detergent filter valve is at lowest settingSet detergent filter valve to a higher setting.
Filter on detergent suction tube is cloggedRun warm water through filter to remove debris.
Damaged or clogged detergent suc- tion tubeRemove obstruction or replace detergent suction tube.
A high pressure nozzle is attached.Replace with black detergent nozzle.
Discharge nozzle is obstructedBlow out or remove debris with fine needle.
GARDEN HOSE CONNECTION LEAKSLoose fittingsTighten fittings.
Missing/worn rubber washer
SPRAY WAND LEAKSSpray wand not properly attachedSlide the spray wand into the gun. Turn the wand collar clockwise onto the spray gun threads until tight.
Broken o-ringCall local distributor and order an o-ring.
PUMP IS NOISYPump is sucking airCheck that hoses and fittings are air tight. Turn off machine and purge pump by squeezing trigger gun until a steady flow of water emerges through nozzle.

Landa ZE2-11026D pressure washer troubleshooting

Landa ZE2-11026D pressure washers are in full compliance with the ISO-9001 quality standards. Their highly efficient heating coil systems and high pressure pumps are backed by the best warranties in the industry.

PUMP RUNNING NORMALLY BUT PRESSURE LOW ON INSTALLATIONPump sucking airCheck water supply and possibility
Check valves stickingCheck and dean or replace if necessary.
Un loader valve seat faulty
Nozzle incorrectly sized
Worn piston packing
Blockage in valve
Pump sucking airCheck water supply connections.
Worn piston packingCheck and replace if necessary.
Insufficient waterCheck filter and hose for breakage/clogging
PRESSURE LOW AFTER PERIOD OF NORMAL USENozzle wornCheck and replace if necessary.
Suction or delivery valves worn
Suction or delivery lines blocked
Un loader valve seat worn
Worn piston package
Water temperature excessiveReduce to below 140° F.
PUMP NOISYAir in suction lineCheck water supply and connections on suction line.
Broken or weak suction or delivery valve spring.Check and replace if necessary.
Foreign matter in valves
Worn bearings
Water temperature excessiveReduce to below 160° F.
PRESENCE OF WATER IN PUMP OILOil seal wornCheck and replace if necessary.
High humidity in air
Piston packing worn
O-ring plunger retainer worn
WATER DRIPPING FROM PUMP PROTECTORWater supply pressure too high (over 90 psi)Lower water supply pressure using regulator.
Spray gun is in the off position for over 1-2 minutesTurn machine off if not in use for over 1-2 min- utes.
OIL DRIPPINGOil seal wornCheck and replace if necessary.
EXCESSIVE VIBRATION IN HIGH PRESSURE HOSEIrregular functioning of the pump valves
MOTOR DOES NOT START WHEN SWITCHED ONPlug not well connected or lack of power supplyCheck plug, cable and switch.
WHEN SWITCHING ON THE MACHINE, MOTOR HUMS BUT DOES NOT RUNMain voltage is insufficient, lower than the minimum required.Check to make sure main power supply is adequate.
MOTOR STOPSTripped thermal overload due to over- heatingCheck that main voltage corresponds to spedfica- tions for the machine. Wait a few minutes before turning on the machine again by resetting the GFCI on the cord.