Question about Water Heaters

1 Answer

Have a karcher pressure washer can not get it to switch from low to high pressure it has to be on the wand,but can't get it switched

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,043 Answers

Either your switch or the spill valve inside the pump is defective. The following URL has exploded parts diagrams that you can use to disassemble your unit to check the parts:

If you don't feel comfortable doing so yourself then have your local Karcher repair center do so.

Posted on Oct 07, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

I have a greenstar boiler its 16 mths went out today blue light flashing checked the condensation pipe was frozen have cleared it out the flue looks ok but im 72 years old its snowing and its bitter

The condensate pipe must be piped into an interior drainage pipe or it will freeze. Turn off the red emergency burner switch to reset the boiler. Also make sure that your flue pipe is clear of snow and doesn't have residual condensate freezing up and blocking it. If it is not pitched back to the blr, it can freeze and clog the flue. This will cause your press switch to cut out on high pressure.

Mar 01, 2018 | Water Heaters

1 Answer

Model # 5vp40e-1 Richmond power vent hot water heater made some ticking noises very faint and stopped heating does not run either.

First try turning off the switch, unplugging it, replugging it in and flipping the switch to restart it. If this doesn't work, the first thing I would check is the draft inducer(looks like blowdryer) and the pressure switch which looks like a flying saucer. If you flip the switch, the first thing you should hear is the draft inducer blowing. If it blows and then stops, jump out the pressure switch and try to relight. If that works, it's the pressure switch.Replace it. There are other safety devices like roll-out switches and hi-limit switches that may be bad. Also, your flue pipe could be clogged, or your vent on the draft inducer may be clogged. Those will set of a safety switch because of overheating. That may be the ticking you were hearing.This is especially likely if your water heater is located in the laundry room because of all the lint floating around. If you've never troubleshot low voltage electric circuits before, you are better off hiring a service mechanic.

Feb 23, 2016 | Water Water Heaters

1 Answer

I have a new pressure switch but still have low water pressure

The pressure switch shouldn't be reducing pressure unless it is smaller that the water pipe. Pressure switches in water heaters are a safety device that activate when pressure builds up above a pre-defined limit. I'm guessing that the most probable cause of low water pressure is either not enough head into the water heater (this is the height of water pipe) or not enough mains pressure. Your best bet is probably to install an inline circulation pump with a flow sensor. This will automatically detect that water is being used and turn on to boost water pressure.

Sep 23, 2014 | Water Heaters

1 Answer

My AMTROL water well tank is copying the pressure of the prussure switch

Sand the points on the pressure switch
Replace pressure switch

Test you are getting 240Volt to pressure switch
Turn breaker fully off and then fully back on

Replace control box or replace start capacitor:

Drain tank, and replace the air valve


If you need further help, I’m available over the phone at

Aug 22, 2014 | Amtrol WX-302 WX-302 150S1, 86 Gal...

1 Answer

High low switch broke

What switch are you trying to wire?
What load does the switch control?

If you need further help, I’m available over the phone at

Mar 20, 2013 | Water Heaters

1 Answer

Wickes 102 combi boiler constantly loosing water pressure

It sounds like your thermostat could be the problem. Have you noticed the boiler cutting off at all, or does it run continuously until it goes out on low water?

You stated, "when boiler is on", so I am wondering how you get the boiler on. If your boiler is controlled by a thermostat, you need to check it for a cold draft possibly from behind the thermostat in the wall where the wires come through. The thermostat should never be on an outside wall. The thermostat could be defective.

An aquastat can also control your boiler. If you have an aquastat, check the setting, typically 175 - 180 degrees. You should also have a "high limit" which should be set at 210 - 220. Some people run that high side limit higher; not a good idea - defeats the purpose. If the aquastat is set too high, the boiler will operate too hot and the problem you have will occur.

"pressure rises and pressure relief valve opens" This could mean that your pressure switch is prematurely venting. Check boiler temperature to see exactly at what temperature the T&P valve purges. If it blows off below the high side setting, either adjust or replace. The T&P valves are usually not adjustable. That blow off temperature is stamped on the head of the valve. So, if it discharges too soon, replace it.

Have you actually seen evidence thgat the T&P valve is opening? You may have a bad bladder in your expansion tank and your system may have air in it. Your boiler should have 12 psi when cold and 20 - 22 psi when operating. Check your boiler pressure guage.

this eventually drops below the minimum operating pressure" Technically, there is set point for a NO MINIMUM OPERATING PRESSURE. That is a function of the amount of water in the boiler. If the T&P is blowing off, it will vent water from the boiler and the boiler pressure will go down. There is a minimum operating TEMPERATURE.

Your boiler could be low on water. You will have to manually fill the boiler. Be careful of thermal shock to the boiler. Feel the piping, and fill only when the circulator is running. Make sure the water is not going directly into the boiler. The supply water should go into the circulating supply side which feeds the radiators, radiant floor, or base board circuits.

All this will adversely affect your hot water. The heat exchanger for the potable hot water may have scale build up in it. Using the hot water keeps the boiler running, and a scaled heat exchanger will give you cooler hot water and the boiler keeps running. If this is a problem, you will need to replace the heat exchanger. A better idea is to not use the boiler for your domestic hot water. Why run the boiler in the summer?

Feb 02, 2013 | Water Heaters

3 Answers

Triton opal shower showing low pressure,when there is no low pressure!

In the top of the water inlet valve at the bottom of the unit there's a plunger that rises when the water is switched on. this activates a small switch at the bottom of the pcb and cancels the low pressure warning. this is free to turn in the valve and over times may rotate stopping the plate on the top from contacting the switch on the pcb. If this has happened just turn the plunger back to the correct position.

Aug 28, 2009 | Water Heaters

2 Answers

No hot water when heating tempreture reached.flow switch is operating, power at flow switch terminals on pcb (three wires),? but when working hot water runns for ever and heating runs ok too untill the...

I have a triton opal shower.

I turn shower on low pressure and cold water. then no low pressure and piping hot water for a very short time then low pressure and cold water.

I've changed the solenoid and the little black plastic ball.

Help !

Aug 21, 2009 | Water Heaters

1 Answer

Low Water Pressure Gas System but High Pressure when Solar Water

if you have a gate valve on the unit from the hot water tank it could be as simple as the valve on the gas system being clogged going to that bathroom,, from how it is described it sounds like that would be the problem check to make sure all valve are not stuck in the on position ans change the valve if it is frozen in place

May 22, 2009 | Water Heaters

2 Answers

Worcester bosch greenstar 25Si?30Si pressure gauge showing high

a couple of things , is your filling loop disconected ? , and are all your radiators blead from air, have you got a high point where the air can get stuck in system say pipes going into roof etc you may need to fit a air release valve in line at highest point to remove the air from system , your boiler should be around 1.5 bar running preasure average setting . if you are constanly filling with water you could be exceeding the pressure valve limet which releases pressure from system this could be faulty ?

Feb 02, 2009 | Water Heaters

Not finding what you are looking for?
Water Heaters Logo

Related Topics:

158 people viewed this question

Ask a Question

Usually answered in minutes!

Top Water Heaters Experts

Brad Brown

Level 3 Expert

17326 Answers

Paul Carew

Level 3 Expert

3313 Answers

Gil Shultz

Level 3 Expert

3382 Answers

Are you a Water Heater Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides