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Is it draining out the water?? Dishwashers fill, spray, and drain more than several times during a cycle. After starting a cycle, let the unit fill, start spraying, and then cancel the cycle--listen for the drain pump activating and pumping out the water. If water is not being drained properly(within a certain time limit), the unit will error code out and stop. Also, make sure the filter is clear--if it gets clogged with "muck", enough water won't be sprayed onto the dishes properly, the pump will require too much energy to try to pump water, the control will sense this and shut down the unit to protect it.
Most likely issue here is that the door is not sealing properly or the sensor on the door is not working, so it can fill up much as your washing machine does but just as the washer won't spin without the door closed neither will the dish washer. An easy way to check this is to let it fill and then lean or push against the door some and see if it starts, if so then the issue is the isn't sealing properly.
Does it fill? You should be able to hear it fill and then see water in the bottom of the tub when you open the door. If it is not filling it is one thing, if it is not spraying it is another issue. Let me know
This seems to be the "anti flood" device at the base of the washer is triggered due to water at the base of the washer. This safety device consists of a polystireene float and a micro switch that detects water leaks/spills and automatically puts the washer in pump out mode. You need to find the leak (hose or clamp)dry the base and rectifythe leak it before the washer works.
does the drain line connect to the disposal?if so and dirty water is inside dishwasher the line must be looped under the sink so nothing can run back into the dishwasher,tie the drain line up higher than the disposal or higher than the point where it connects to the drain pipe so nothing can drain back into the washer.are you sure the water is draining out of the machine?fill it up and hit cancel drain and listen to see if you hear it draining in the sink,if the line isn't looped you could have a block in the drain line or in the pump
I have had my Fisher Paykel dishdrawer for 8 years and it has never completely worked. I would get a U3 code on the top drawer intermittently. I have had my drains rerouted twice, LP - HP reset, service men replace the back flow flap and mother boards without luck... until I was able to get my hands on the service manual. Turns out the solution is quite easy. If you have a problem with the U3 code it means the drawer is not draining appropriately, The washer only gives a preprogrammed 60 sec to drain the drawer. So if your drawer is overfilled, it will think it has a drain problem. The following is taken from the service manual...
"U3 - Time to fill was too short, indicating water was still in the tub. Possible Causes: · Drain pump is blocked. · Drain hose is blocked. · Sprayarm or rotor not turning freely. · Motor electronics have failed. · Machine set to 'LP' on a high pressure water supply.
The tub fills with approximately 2.2 litres of water, level with the base of the spray arm attachment. Once this level is reached, the wash pump (which has sensed the fill at 30 second intervals during the fill), becomes primed and pumps the water through the spray arm which will then rotate. The water level is monitored by sensing the motor load through the electronics."
The solution is to turn your water supply valve part of the way on to limit the gpm flow to the drawer. This way, the drawer will not have over-filled in the 30 sec it took to sense the motor load. I have tried it and wow no more U3. Hope it makes sense and hope it works for you. jim