Question about Jet Tech Systems 24 in. 737 Free-standing Dishwasher

2 Answers

Water temperature is not hot enough

The water temperature was used to be 160F. Currently, it's only 140F. I have checked the inlet hot water. It is 120F which matches the hot water temperature set at water tank. How can I increase the hot water temperature back to 160F or 170F? Thanks for your advice.

Posted by Serey Kong on

  • has1029 Feb 13, 2008

    I have a JET TECH 18DP. wash water temp. gauge indicates 78c, but actual temp. from our district health inspector's own thomermeter shows 67c. She tried three times, but same result hence failed to pass the health inspection. What could be a cause for this issue? Any response will be appreciated.

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Robert Marsolais

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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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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]

Posted on Dec 21, 2007

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