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.

Problem	Possible cause	Solution
Water temperature too hot	Incoming water to machine warm or hot	Lower incoming water temperature.
	Gas pressure too high	Specifications for proper gas pressure.
	Detergent line sucking air	Tighten all clamps. Check detergent lines for holes.
	Defective high limit switch	Replace.
	Insufficient water supplied	Check water GPM to machine.
	Restricted water flow	Check nozzle for obstruction, proper size.
Presence of water in oil	Oil seal worn	Check and replace if necessary.
	High humidity in air	Check and change oil twice as often.
Water dripping from under pump	Piston packing worn	Check and replace if necessary.
	O-Ring plunger retainer worn
Detergent not drawing	Air leak Tighten all clamps.	Check detergent lines for holes.
	Detergent metering valve packing not tight or packing worn	Tighten nut. Replace valve or packing.
	Filter screen on detergent suction hose plugged	Clean or replace.
	Dried up detergent plugging metering valve	Disassemble and clean thoroughly.
	High viscosity of detergent	Dilute detergent to specifications.
	Restriction behind float tank screen removed	Install restriction.
	Hole in detergent line(s)	Repair hole.
	Strainer basket plugged	Remove and clean.
	Connections on selector valve loose	Put 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 installation	Pump sucking air	Check water supply and possibility of air.
	Valves sticking	Check and clean or replace if necessary.
	Unloader valve seat faulty
	Worn piston packing
Fluctuating pressure	Valves worn
	Blockage in valve
	Worn piston packing
Pump noisy	Air in suction line	Check water supply and connections on suction line.
	Broken or weak inlet or discharge valve springs
	Excessive matter in valves
	Worn bearings
Oil dripping	Oil seal worn
Low	Faulty pressure gauge	Install new gauge.
Operating pressure	Insuffient water supply	Use larger garden hose. Clean filter washer at water inlet.
	Old. worn or Incorrect spray nozzle	Match nozzle number to machine and /or replace new nozzle.
	Belt Slippage	Tighten or replace. Use correct belt.
	Plumbing or hose leak	Check 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 pump	Install new packing kit.
	Fouled or dirty inlet or discharge valves in pump	Clean inlet and discharge valve.
	Worn inlet or discharge valves	Replace with valve kit.
	Obstruction in spray nozzle	Remove obstruction.
	Leaking pressure control valve (where applicable)	Rebuild or replace as needed.
	Detergent metering valve left open sucking air or faulty metering valve	Close and /or replace metering valve.
	Slow motor RPM	Check incoming voltage.
Water temperature	Low gas pressure	Increase gas pressure to machine.
	Improper pressure regulator	Specify BTU, building gas pressure 11 w.c.i. to machine for correct sizing of regulator.
	Low gas pressure	Increase gas pressure
	Soot buildup on coils not allowing heat transfer	Clean coils.
Flow & burner switch on: no spark, no pilot gas	A. No main power	With 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 flow	Main gas supply turned off	Set 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 spark	A. Defective ignitor/ sensor and or its wiring	Set test meter to ohm scale.
		1. Disconnect the wire from the IGN terminal on the ignition control unit.
	B. Faulty ignition control unit	2. 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.

PROBLEM	POSSIBLE CAUSE	SOLUTION
QUICK COUPLER LEAKS	Worn O-Ring	Replace O-Ring
SPRAY GUN(S) LEAK	Foreign matter between valve seat and ball	Remove foreign matter.
PRESSURE WASHER UNLOADER CYCLES	High pressure filter or wrong sized nozzles for attached pressure washer	Remove and clean out filter, nozzle(s). Check nozzle size.
NOZZLES SPINNING TOO SLOW	Not enough water volume for attached pressure washer to rotate nozzles	Need a larger gpm pressure washer.
NOT CLEANING SURFACE	Height adjustment too high or pressure washer too small for job	Lower adjustment knob or attach to larger pressure washer.
ROTATING NOZZLE ARM NOT SPINNING, BEARING NOISE	Pressure washer too small or bearing low on grease	Get 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.

PROBLEM	POSSIBLE CAUSE	SOLUTION
LOW OPERATING PRESSURE	Insufficient water supply. Closed faucet. Inlet hose kinked	Use larger garden hose; clean inlet water screen. Open faucet.
	Clogged inlet hose strainer	Check plumbing system for leaks. Retype leaks with teflon tape.
	Faulty or mis-adjusted unloader valve	Adjust unloader for proper pressure. Install repair kit when needed. Call local distributor.
	Worn packing in pump	Call Dealer Customer Support.
	Machine has been stored in freez- ing temperatures	Thaw out machine completely, including hose, spray gun and wand.
	Slow engine RPM	Call local distributor.
FLUCTUATING PRESSURE	Worn or dirty pump valves
	Nozzle is obstructed	Blow out or remove debris with fine needle.
	Pump sucking air, inlet hose leaking	Check 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 supply	Turn water on full force. Check garden hose for kinks, leaks or blockage.
PRESSURE LOW AFTER PERIOD OF NORMAL USE	Nozzle worn	Replace nozzle.
	Unloader valve worn	Replace unloader valve.
ENGINE WILL NOT START OR STOPS WHILE OPERATING	Low oil shutdown	Fill engine with oil.
	Out of gas	Fill fuel tank.
	Water in gasoline	Drain gas tank; fill with clean fuel.
ENGINE IS OVERLOADED	Nozzle partially blocked	Clean nozzle.
	Excessive pressure from high engine RPM	Adjust engine throttle to lower RPM.
WATER OR OIL LEAKING FROM BOTTOM OF PUMP	A small amount of leaking is normal	If excessive leaking occurs, Call local distributor.
PRESENCE OF WATER IN PUMP OIL (BXD Comet & G Pump Series Only)	Water sprayed at machine	Change oil. Direct spray away from machine.
	High humidity in air	Check and change oil twice as often.
	Piston packing worn. Oil seal worn.	Call local distributor.
ENGINE OPERATES FOR 15 MINUTES THEN STOPS	Not enough gas or engine oil	Fill tank with gas. Check oil level.
	Vapor lock developed by heat of day	Keep gas tank full to avoid vapor locking.
	Obstruction in fuel filter	Clean or replace fuel filter.
ENGINE LACKS POWER	Dirty air filter	Replace air filter.
ENGINE FALTERS	Choke is opened too soon	Move choke to halfway position until engine runs smoothly.
WATER DRIPPING FROM UNDER PUMP	Piston packing worn	Call local distributor.
	O-Ring plunger retainer worn
	Cracked piston
OIL DRIPPING	Oil seal worn or damaged
WATER LEAKING FROM PUMP PROTECTOR	Spray gun closed with machine running 5 minutes or longer	Open spray gun or turn off machine.
	Excess water supply pressure	Place a pressure regulator at end of 50' garden hose.
NO DETERGENT	Detergent suction tube not properly connected to machine	Check connection.
	Detergent is too thick	Dilute detergent. For best results, use manufacturers detergent.
	Detergent filter valve is at lowest setting	Set detergent filter valve to a higher setting.
	Filter on detergent suction tube is clogged	Run warm water through filter to remove debris.
	Damaged or clogged detergent suc- tion tube	Remove obstruction or replace detergent suction tube.
	A high pressure nozzle is attached.	Replace with black detergent nozzle.
	Discharge nozzle is obstructed	Blow out or remove debris with fine needle.
GARDEN HOSE CONNECTION LEAKS	Loose fittings	Tighten fittings.
	Missing/worn rubber washer
SPRAY WAND LEAKS	Spray wand not properly attached	Slide the spray wand into the gun. Turn the wand collar clockwise onto the spray gun threads until tight.
	Broken o-ring	Call local distributor and order an o-ring.
PUMP IS NOISY	Pump is sucking air	Check 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.

PROBLEM	POSSIBLE CAUSE	SOLUTION
PUMP RUNNING NORMALLY BUT PRESSURE LOW ON INSTALLATION	Pump sucking air	Check water supply and possibility
	Check valves sticking	Check and dean or replace if necessary.
	Un loader valve seat faulty
	Nozzle incorrectly sized
	Worn piston packing
FLUCTUATING PRESSURE	Valves worn
	Blockage in valve
	Pump sucking air	Check water supply connections.
	Worn piston packing	Check and replace if necessary.
	Insufficient water	Check filter and hose for breakage/clogging
PRESSURE LOW AFTER PERIOD OF NORMAL USE	Nozzle worn	Check and replace if necessary.
	Suction or delivery valves worn
	Suction or delivery lines blocked
	Un loader valve seat worn
	Worn piston package
	Water temperature excessive	Reduce to below 140° F.
PUMP NOISY	Air in suction line	Check 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 excessive	Reduce to below 160° F.
PRESENCE OF WATER IN PUMP OIL	Oil seal worn	Check and replace if necessary.
	High humidity in air
	Piston packing worn
WATER DRIPPING FROM UNDER PUMP	Piston packing worn
	O-ring plunger retainer worn
WATER DRIPPING FROM PUMP PROTECTOR	Water supply pressure too high (over 90 psi)	Lower water supply pressure using regulator.
	Spray gun is in the off position for over 1-2 minutes	Turn machine off if not in use for over 1-2 min- utes.
OIL DRIPPING	Oil seal worn	Check and replace if necessary.
EXCESSIVE VIBRATION IN HIGH PRESSURE HOSE	Irregular functioning of the pump valves
MOTOR DOES NOT START WHEN SWITCHED ON	Plug not well connected or lack of power supply	Check plug, cable and switch.
WHEN SWITCHING ON THE MACHINE, MOTOR HUMS BUT DOES NOT RUN	Main voltage is insufficient, lower than the minimum required.	Check to make sure main power supply is adequate.
MOTOR STOPS	Tripped thermal overload due to over- heating	Check 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.