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Kitchenaid D/W KUDP01DLBS3 Voltage Reading


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5 replies to this topic

#1 skispcs

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Posted 28 August 2011 - 04:06 PM

ON my KUDP01DLBS3 dishwasher the circulation motor does not want to run.
I pulled the connector off of the motor and put my voltmeter between the R/Bk and Blue wires.
I then started the diagnostic mode and when it got to three I did NOT see any voltage.

I then pulled the front panel off and put the volt meter between P8 tan and P9 R/Bk connectors.
(Across K1) and I read 120Volts.
I then started the diagnostic and when it got to three the voltage did not change.
I expected the voltage to drop to 0 when K1 closed.
I did hear the relay but the voltage stayed at 120V.

Should it have gone to 0?
Does it look like the relay on the controller may be bad?

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#2 RegUS_PatOff

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Posted 28 August 2011 - 07:12 PM

... I expected the voltage to drop to 0 when K1 closed.
... Does it look like the relay on the controller may be bad?

1) could try jumpering it ...
2) yes, could be bad...
could be replaced (soldering, etc)
.

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#3 skispcs

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Posted 28 August 2011 - 09:18 PM

THank You, I jumpered across the relay and the circ motor starts and runs.

The relay for the circ motor is a T7CV5D-24 and according to the datasheet the relay requires 24VDC to activate the relay.
I soldered on a couple of wires to check the voltage on the coil terminals during the diagnostic cycle and it was only 12VDC.

I am still not sure is this is correct or not but does anyone have the full wiring diagram of the control board that shows where the activation signal comes from?

Edited by skispcs, 28 August 2011 - 09:19 PM.


#4 RegUS_PatOff

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Posted 28 August 2011 - 09:33 PM

... relay requires 24VDC to activate the relay.
... and it was only 12VDC.
... does anyone have the full wiring diagram of the control board that shows where the activation signal comes from?

1) yes
2) may need to check with a 'scope... may be a bad Diode, Capacitor, or the VR1 regulator
Do the other Relays work > ... Heater... Vent ?
3) not available ..:confused:
.

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#5 skispcs

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Posted 31 August 2011 - 06:07 PM

So I ordered a Controller board, popped it in, chose the settings, and everything worked.
I go drink a beer in celebration and about 30 minutes later walk past the dishwasher and the Normal LED light is blinking.
Controls are non-responsive, shut the power off and turn it back on, the machine starts for second and then it stops with the Normal light blinking.

Now what is wrong with it ...

#6 skispcs

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Posted 31 August 2011 - 09:31 PM

After another beer and a little mental break I took another look.
When I replaced the Front Panel I only used one screw because at this point I had taken it off about 6 or 7 times.
It was possible that some steam/heat had encroached into the control board area from the vent.

By the time I was done with my beer, it had cooled down so I put all of the screws in and made sure the vent was sealed.
The dishwasher has now completed one whole wash cycle without any problems.




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