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Bub
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Posted: Tue May 6th, 2008 13:58 |
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| This DW was completely dead. No lights, no hum, nothing. No symptoms that I can determine prior to shut down. The thermal fuse on the control board tested bad so I replaced it and the DW powers up. It will start any cycle but after it ticks off several minutes on the readout it jumps down to two minutes then times out. I cant see that it's getting any water into the tub although the supply is there. I haven't checked the inlet valve. Would the thermistor shut it down because there is no water? Does the control board tell the pump to kick on? I know these units are bad about board and touch pad problems but is there a way to rule out a pump problem? Help!
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RegUS_PatOff
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Posted: Tue May 6th, 2008 16:21 |
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You'd have to determine why it isn't filling.
Check the voltage at the inlet valve.
Kenmore 665.15923001 Tech Sheet
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denrayr
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Posted: Tue May 6th, 2008 17:02 |
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| check the service sheet for a keypad matrix. Sounds like a stuck start/cancel key
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Pegi
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Posted: Tue May 6th, 2008 17:07 |
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| Possible it is in sales demo mode? That tech sheet should tell you how to get it out if it is....at the least will let you run diagnostics perhaps.
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Bub
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Posted: Tue May 6th, 2008 20:35 |
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| Thanks for the link, reg_us. I understand how to start the diagnostic cycle but I don't know what I'm supposed to do with it. Is there a laymen's explanation that a simple handyman could understand?
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Bub
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Posted: Tue May 6th, 2008 22:12 |
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| Thanks Pegi. I've looked over the tech sheet and I don't see any mention of a demo mode.
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Bub
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Posted: Tue May 6th, 2008 22:17 |
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| Thanks denrayr. Would that be the user interface matrix? If so what can I do to trace it down short of replacing the touch pad?
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Pegi
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Posted: Tue May 6th, 2008 22:28 |
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Again this may have nothing to do with your unit but might be worth a look see...
SERVICE POINTER
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Bub
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Posted: Wed May 7th, 2008 03:05 |
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| Does anyone know of a post here or anywhere that would help me understand how to interpret the information I get from the diagnostic mode on this thing? I see the chart on the tech sheet but I don't know how to read it.
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RegUS_PatOff
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Posted: Wed May 7th, 2008 05:02 |
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Bub wrote:
... I cant see that it's getting any water into the tub although the supply is there. I haven't checked the inlet valve...
The water "supply" or the voltage "supply" ?
Did you check the voltage at the water inlet valve ?
Last edited on Wed May 7th, 2008 05:05 by RegUS_PatOff
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denrayr
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Posted: Wed May 7th, 2008 06:56 |
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Bub wrote: Thanks denrayr. Would that be the user interface matrix? If so what can I do to trace it down short of replacing the touch pad?
yes the chart on the tech sheet shows you which pins to test on the interface cable. for start you test between pins 1-12 and 1-4. for cancel you test between 1-12 and 1-2. there is a diode built into the circuit so for each test you should reverse the red and black meter leads. your meter should read open circuit between each set of pins.
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denrayr
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Posted: Wed May 7th, 2008 07:12 |
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| i just noticed your model has a pressure switch. I would run the diagnostics cycle and pay attention to when the display reads 3 and 2. When the cycle gets to this portion it monitors the pressure switch. 3 and 2 should last 1 minute each. if the switch is shorted these increments will be skipped.
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Bub
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Posted: Wed May 7th, 2008 12:56 |
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| OK so I turn off power to the DW and I test for continuity between those pins on the interface cable on the end that plugs into the control board. When you say reverse the leads do you mean test both ways, red on P1, black on P12 and then vice-versa?
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denrayr
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Posted: Wed May 7th, 2008 17:09 |
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| yes that is correct but i would do the diagnostics test first
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Bub
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Posted: Wed May 7th, 2008 20:26 |
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| Thank you. Why the reversal of the wires? Wouldn't I get a continuity reading either way? Can you tell me how to run the diagnostics? I know how to start the cycle but I have no idea what I'm supposed to see or do after that and I've looked everywhere for a post of some kind that explains it. Since I'm on a roll with the questions, do you know of any "how to" books that cover the later model digital appliances. I have books on the basics but the stuff made in the last 5 or 6 years is wearing me out.
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denrayr
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Posted: Wed May 7th, 2008 20:39 |
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No you will only get continuity one direction even if the keypad is shorted do to a diode in the circuit. to start the diagnostics cycle press hi temp scrub,air dry,hi temp scrub, air dry. according to the tech sheet the display should show 88 for 3 seconds, 10 for 5 seconds, 9 for 2 seconds, 8 for 5 seconds, 7 for 10 seconds, 6 for 2 seconds, 5 for 5 seconds , 4 for 2 seconds, 3 for 1 minute, 2 for 1 minute, 1 for 1 minute, 0 cycle ends.
pay attention to the 3 and 2 display readings if the pressure switch is shorted these wont last for 1 minute
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Bub
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Posted: Wed May 7th, 2008 22:42 |
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| Thanks so much. It makes sense now. Any significant variation in interval time will point to a problem in that cycle or in the components involved in that cycle?
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denrayr
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Posted: Thu May 8th, 2008 02:43 |
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| report what happens in the diagnostic cycle. make sure and listen to see if it fills during this cycle
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Bub
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Posted: Thu May 8th, 2008 18:59 |
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| OK I ran the diagnostics and I got 88 for 3 seconds, then a d1, then 11, then the rest were normal. At no time did it fill with water and the 3-2-1 segment of the cycle was normal. The water inlet solenoid shows continuity also.
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Bub
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Posted: Fri May 9th, 2008 10:50 |
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| Well I guess I'll just get a service tech in to repair it. Thanks to all who tried to help out.
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