Question about Jet Tech Systems 24 in. F18DP Free-standing Dishwasher

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Jet tec f18 water goes to 120f redy light does not come on will not wash got hot water to 120f open door have steem but no wash frank

Posted by frank on


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Robert Marsolais

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Verify the contactor for working condition. maybe burned wires or bad contactor. if it is good then the rinse thermostat or, less likely, the booster element.

Posted on Dec 29, 2013


1 Related Answer

SOURCE: Water temperature is not hot enough

Hi there,

Mr Mark Evans is mistaken. In this model, there are two heaters, One for the rinse water (should go up to 85C, and 90C on some serial numbers) and one for keeping the wash water at 60C.

The fact that you're not getting proper rinse temperature maybe caused by a couple of factors. One, like mr Evans wrote, the controller or thermostat may need some adjustment. those are normally pre-set however they are adjustable. Might be able to gain a few more degrees. Two, water pressure may also play a role. to high water pressure will cause to cool down the booster too quickly and will vaporise your rinse water. water pressure should be at 25 PSI. On the other hand, any pressure below 20PSI will also give you poor results.

Mr Evans is right about waiting for the unit to have fully heathed up before the test is started.

If the unit is older than two years, I would check the washarm, make sure they are in good shape. Often a split at the bushing will cause loss of pressure. that is common to most Jet-Tech product.

And for last, if you have any mineral builtup in the unit, well this will cause all sort of problems.

On the F18, the gauges are not really acurate, often off by 10C. An external themometer is needed for acurate reading.

Hope this helps.

Robert Marsolais

[email protected]

Posted on Aug 01, 2008


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F18 is flashing on a Bosch front loader washing machine ( Logixx8 Sensitive)?

If it is a F18 error,t means that the pump out time is too long. Most likely clogged filter.
Open panel on the bottom right, drain the water out using the left hose and remove the filter plug. Have a look and clear obstructions.
That should help.

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Try it, You'll Like It.

Just a reminder that before you use your dishwasher be sure to turn on the hot water at the sink and let it run untill it gets hot, hopefully 120f. When the dishwasher fills you will then be washing your dishes in hot water. Note this tip applies to just about every dishwasher.

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Bosch shx36l05uc/21: After running diagnostics the 'wash' button keeps flashing, can someone tell me what the problem is?

Hi Jeff, As you can see there's 3 different Bosh washing machine models, Hope you can find your error code.... CHEERS..

Bosch Washing Machine Fault Codes

F16 - Door lock error
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I was washing today and at the end of every wash tere was a code of f18 flashing on my screen .what should i do

F18 means pump is blocked or broken, clean filter first, no result change then you have to change the pump.

I also had this problem - the machine was full of water and it flashed up F18. I had to drain the water out of the machine using the small pipe located next to the drain filter. There was loads of water to drain out. I used my oven roasting tray which was perfect for the job. Then I undid the screwcap filter. There was a lot of really black water that came out, along with about two pounds worth of coins.

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I have been putting my washing on a 40 wash and have been putting enough washing liquid in but my clothes just will not wash, i have felt the glass in the door but it doesnt get very hot, is my washing...

The hot water goes into the machine at a slower rate than the cold water does. Open the hot spigot (water valve) behind the washing machine all the way open, then open the cold spigot just enough to get the desired 'warm' temperature of the water going into the machine while the machine is filling. You may have to shut the door to allow water to flow. Remember that it takes a minute or so for hot water to reach the machine from hot water tank.

Dec 08, 2010 | Hotpoint Aquarius WMA42 Front Load Washer

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Betty, this is problematic of all front loading washers. I have some helpful suggestions, which have helped us with our own front loading washer.

First, whenever you're done doing a load of laundry, don't close the door all the way shut. Leave it open a couple of inches for a day to let it air dry out, which will prevent the nasty smelling odor you're getting.

I also take a small rag/washcloth to wipe out the door seal/gasket after we're done washing, that way, there's less water to contribute to foul odors, etc.

The other thing we discovered is to make our last load of wash the hot water wash, whenever we're doing whites, or the stain cycle. This helps get rid of any gunk that might hang around between wash days.

Now we don't always have a hot water wash everytime we do laundry, but by just wiping out the gasket and leaving the door open, we eliminated the odor issues completely.

Frankly, the gasket shouldn't have to be wiped out when you're done washing, but that's a design issue that we've overcome with a simple washcloth. So just do these simple steps and you'll save yourself some frustration.

We really like how clean our laundry gets with the front load washer and how little water is needed to do a load, so we've decided it's worth taking the time to wipe the gasket once we're done for the day, and to leave the door open to prevent any nasty odors.

Hope you find this Very Helpful and best regards!

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Bosh Washing Machine F18 fault

I also had this problem - the machine was full of water and it flashed up F18. I had to drain the water out of the machine using the small pipe located next to the drain filter. There was loads of water to drain out. I used my oven roasting tray which was perfect for the job. Then I undid the screwcap filter. There was a lot of really black water that came out, along with about two pounds worth of coins and some hairgrips. Now my machine works perfectly !

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1 Answer

There is a heavy film on my dishes. I have a rinse in it but I don't think it is being used and I use Cascade gel to wash them?

A heavy film can be the product of bad water conditions, bad cleaning action from the machine, incorrect/inadequate chemistry, and even water temps being too low.
Start by washing some of the dishes by hand to determine if the film can be removed. Use a quality detergent and some elbow grease. If film can be removed, test the machine for proper washing action. I like to do this by coating the inside of several glasses with mayonaise and placing them strategically throughout the machine. Run a cycle and ensure ALL mayonaise is removed. Is mayo removed? If no, check for plugged wash arm jets or screens. If yes, check for good water temps. 120F or higher is best, depending on machine type/model.
If machine is good and film is removed by hand, then you either have a water problem (water hardness, TDS, etc), a temp issue (raise temps above 120F), or a procedural issue (improper loading of wares, inadequate/insufficient detergent, too much food soil entering dishmachine).
Hope this helps,

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Water temperature is not hot enough

the heater in the unit is supposed to heat both the wash water and the rinse water.
if it is not, then you have a problem in a controller or an element.
how are you determining the temperature and are you waiting for the unit to signal ready before you test it?

mark evans

[email protected]

Oct 12, 2006 | Jet Tech Systems 24 in. 737 Free-standing...

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