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Inadequate pressure from my Alto pressure washer

My Alto Dynamic is not developing the high pressure that it used to. I am now on another water supply and 30 Meter hose and I recently bought a new pressure hose and wand. What can I check to cure the problem.

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Clean out spay head nozzle with small diameter wire and check that head is pulled or push in or out for high pressure.

Posted on Jul 28, 2009

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Posted on Jan 02, 2017

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Kenmore Washer HE 2plus my machine has an error F 20 won't do anything

The technical details of this fault code are shown in the first image below. This information is valid for most Kenmore HE2+ washers. It is likely that it will apply to your model. If the washer is not filling with any water, check the water supply faucets behind the washer to make sure that they are properly open. If you are using a floodsafe device as shown in the second image on your water supply lines, I recommend replacing this device with normal water supply hoses. The floodsafe device will not work properly on most washers. Turn off the water supply faucets and remove the supply hoses from the connection on the back of the washer. Check the inlet screens on the back of the washer for debris or deposits that could prevent the washer from filling properly. Clean the screens if necessary and carefully replace them after flushing the inlet to the water valves thoroughly with water. (Failure to properly flush the inlet area could result in debris getting past the screens and fouling the inlet water valves.) While the water supply hoses are still disconnected from the back of the washer, place the ends of the hoses in a bucket and briefly turn on the water supply faucets to check the water pressure and flow from them. If the water supply is inadequate, you may need a plumber to resolve this problem. If the washer still won't fill after checking these issues, then you could have a failure in the solenoid water fill valves for the washer. You could also have a wiring failure or a problem with the electronic control board.

If the washer is filling, your problem would likely be in the water level pressure switch or the air pressure tube between the bottom of the tub and the pressure switch. A wiring failure or control board problem could also prevent the water level from being properly detected. To access the water level pressure switch, you can unplug the washer and remove the top panel. Screws at the very back of the top panel secure it to the washer. Remove these screws and then pull the top panel slightly back and then up and off the top of the washer. The water level pressure switch is normally on the rear of the right side panel of the washer. Check the air pressure hose and wiring connections. If no problems are found, you may need to replace this part.

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Jan 02, 2011 | Kenmore Washing Machines

1 Answer

Hi I have an Alto Force and it it has simply stopped operating. Fused changed etc but still no luck.

Try the machine without the high pressure hose on. if that fails you will need to check that you have power to the switch on the machine.

May 21, 2010 | Garden

1 Answer

Power Washer has no pressure, any ideas

1. If you have an inlet chemical injection valve make sure that the hose is intact and that the valve is closed.
2. Purge all air from the line by holding the nozzle actuation lever open until all air has been purged. When you connect the water supply hose turn it on before connecting the high pressure hose and let the unit self purge to the pump outlet high pressure hose fitting. Then connect the high pressure hose.
3. You could have a stuck spring and ball inside the high pressure head of the pump. You can tip the unit on its' side and add a substantial amount of WD-40 to the water supply hose fitting in an attempt to free the springs and balls.
4. Try BRIEFLY running the unit without the hose connected to see if there is high pressure water ejected from the high pressure fitting.
5. Inlet water screen at hose connection is clogged (hose screen and rubber) Check screen for debris.
6. The water strainer is clogged. (Almost looks like an LPG regulator just after but in line of the supply hose connection to the pump)

Order of troubleshooting

1, 2, 5, 6, 4, then 3.

Thanks for using FixYa!


Mar 19, 2010 | Psi Blue Max 2200 High Pressure Gas Power...

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Kew Alto Force X-TRA cold water supply pressure sensor problem

Have the same p-washer (5-6 years old) and the same problem. Opened it and the pressure switch is the crook. A plastic pin has an inner and an outer spring on it (two consentric springs). The smaller inner spring is completely rusted away so the switch no longer operates correctly. Obviously the spring was of a too low quality. The service office say a new switch cost around 400NOK (50 euros) - so the washer is too expensive to mend. But I will try to get it working without the inner spring. Doubt if I succed. So will have to dump the washer.

Mar 19, 2010 | Garden

1 Answer

I have a durabuilt DB1404 and when i'm spraying, the power washer doesn't want to keep going. It goes and stops. I tried getting the air out and that didn't work. What else could i try?

This sounds like you have an inadequate supply of water to the unit. Make sure your supply faucet is turned all the way on, use a 5/8 or 3/4" hose from the faucet to the unit, and use a smaller tip on your spray nozzle to minimize the amount of water you are using when working.

Jan 04, 2010 | Coleman Powermate DuraBuilt 1400 PSI...

1 Answer

Water pouring out of the pump on my kew powerwash

Hi, You can get this seal set for a 1502v from nilfisk alto or any alto dealer.

Dec 27, 2009 | Garden

1 Answer

Excell vr2500 pressure washer ,no pressure, took off high pressure hose at bottom of washer , get water flow, but flow does not change when engine is running full throttle

check the water filter ---high pressurehose must have bbackpressure to develop pressure so disconecting it wont acheive ,much ,if you have agood water supply ,oil in the pump--- adjust pressure by srewing the brass fitting that the pressure hose attachesto, down that is clock wise a couple of turns or so and see if that makes a difference if not seals in the pumpmay be gone tha t should show by water in the oil

Jul 29, 2009 | Garden

1 Answer

Karcher Power Washer that surges up and down with water pressure.

Before you start it up:
1. Disconnect the high pressure hose 2. Connect the water supply and turn on 3. Make sure water is flowing through the pump
Start the motor, run for about 10 seconds and then turn off.
Turn off the water supply, connect the high pressure hose, turn water back on, start the motor and away you go.

May 29, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

My Karcher high pressure sprayer is delivering intermitant pressure.Every 15 seconds or so it developes high pressure for only about two seconds. Why is it not delivering a constant high pressure stream?

Check that the water supply is constant , it sounds like the pump might be pushing out more water than can be delivered , or it could be a dirty inlet filter

May 17, 2009 | Karcher PSI Electric Pressure Washer

1 Answer

I have a alto pressure washer i have problem with the trigger


Apr 21, 2009 | Karcher 2500 PSI Pressure Washer

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