Jet tech f18dp drains constantly on startup - Jet Tech Systems 24 in. F18DP Free-standing Dishwasher

Check the inlet screen to the water circulating pump and the water heater element for lime buildup. I've seen a heater element that had a 1/4" thick layer of lime encasing it. The inlet also had some lime and other debris clogging the screen. After carefully chipping away as much as was practical and running lime remover (such as CLR) through the machine, it heated the water much more quickly and had an effective spray.

To prevent a recurrence of this problem, make sure you have a functional water softener ahead of the water heater feeding the machine.

Could be a defective cycle timer

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.

http://mvpgroupcorp.com/uploads/25_f18_manual_new_2006.pdf

Those machines use the incoming water temp to start and then boost it, so check the incoming water temp. If it is too low then you need to increase it. It could be the heater that is not working but you need to check the incoming water temp first.

Go to PARTSTOWN.COM at the top of the page pick the manufacturer, model and document type. hit the magnifying glass and it will apper if they have it.

If an adjustable thermostat is provided adjust the dial. If it is an electronic type, check the sensor with a correct part no.

Refer user guide also for the adjustments.

Won't heat any more