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The old soap dispenser was not operating and had what appeared to be melting on the solenoid. I replaced the entire soap dispenser but still have an inoperable soap dispenser. How should I proceed to find the problem?
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I think the model number should be MDB and not MD8. Here are your parts MD87749AWB1 Here is the tech sheet. It is too big to attach on this site so I had to use a third party site. Un-check the use our download manager and then use the gray download button, otherwise the site may install software on your computer that you do not want. Download MDB7749.pdfI would check that the solenoid has continuity with a meter. Also if possible see ifit will open by manually activating the solenoid. If OK then odds are the the old solenoid blew the triac on the control board. |
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Thanks Denman...I put meter across the solenoid terminals and get about 100 ohms.....but my meter does not return to infinitety but does give me continuity when crossing probes..I have to assume that my old analog meter is giving me the correct reading..
How do I go about checking to see if it operates manually?
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Thanks for the parts list. The reading across the solenoid terminals is 300ohms. The manual test of the solenoid results in the dispenser door flipping open easily. You mentioned in an earlier msg that probably the triac on the control board could be bad. Can that be replaced or does it have to be the entire control board? If so is that nearly 100% the solution or will it result in other replacements? I wonder at what point do I decide the cost is approaching the cost of a new machine. I see the control board costs about $140 and seems like an easy job. I do not mind doing that if most likely it will solve the problem.
Will I do harm if I run the dishwasher while the solenoid is plugged in?
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[COLOR="Blue"]Can that be replaced or does it have to be the entire control board?[/COLOR]
You have to replace the board.
[COLOR="Blue"]If so is that nearly 100% the solution or will it result in other replacements?[/COLOR]
Yes, st least I think it is.
[COLOR="Blue"]I wonder at what point do I decide the cost is approaching the cost of a new machine.[/COLOR]
Only you can decide that. If the unit is in good shape and is doing a good job cleaning dishes then it is probably worth fixing.
[COLOR="Blue"]
Will I do harm if I run the dishwasher while the solenoid is plugged in?[/COLOR]
I do not think so |
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Thank you
I will order the control board and let you know the results once I have it installed
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It took only one day for the control board to be shipped here. I put it in that same da and "bingo"
We are back in operation
Thanks for the help
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Well I thought things were just fine but the problem has returned. It worked well for couple of weeks but the soap dispenser will not open again.
First thing comes to mine that maybe one of the parts I replaced went bad.
Is there a guarantee on the parts you sell?
Or what else could be causing the problem?
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[COLOR="Blue"]Is there a guarantee on the parts you sell?[/COLOR] I do not work for AppliancePartsPros but they do warranty parts, please see below. Below is their warranty policy. Warranty - AppliancePartsPros.com[COLOR="Blue"]Or what else could be causing the problem?[/COLOR] All I can think of is a bad connection or wire. You have replaced both the dispenser and the control board and that should have fixed it long term. I would check the new dispenser just in case it also shows signs of overheating like the old one. |
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