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Samsung dmr78ahs dishwasher grinding noise and error code 9e

dmr78ahs grinding noise and

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2 replies to this topic

#1 jkilgore34

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Posted 04 October 2011 - 07:02 PM

dmr78ahs I'm wokring on this dishwasher. There is a grinding noise when first started up and after a minute or two I get 9e error code. I believe that means low water level. I took out and took apart the water level assembly and I didn't see any obstructions. the micro switch tested good. I took off the flow meter as well and took it apart and It looked good as well. I have been told those flow meters can go bad. Is there a way to test a flow meter? Where could the grinding noise be coming from? Drain pump maybe?

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#2 john63

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Posted 04 October 2011 - 11:07 PM

<<<There is a grinding noise when first started up>>>

*************************

Many Samsung DMR57 & DMR78 dishwashers are known for developing a rattling/grinding noise during DRAIN MODE.

This is usually caused by a broken plastic mounting tab from the upper rack ADJUSTERS.

Each side of the upper rack has a tan/gray square RACK ADJUSTER---after a mounting tab (or 2) breaks off---this piece of plastic eventually ends up in the DRAIN PUMP HOUSING.

The DRAIN MOTOR should be removed to inspect for debris.

******************************

<<<after a minute or two I get 9e error code>>>

******************************

A normal amount of water in a DMR78 dishwasher would be---at about 1 inch past the HEATER SHIELD in the tub.

If you've tested the SWITCHES on the LOW LEVEL SENSOR---then they're not at fault.

Press the following buttons at the *same* time:

DELAY START--NORMAL--POWER(button)

The word "ALL" appears for 3 seconds followed by "t1"

(NOTE: Test #1 checks the functions of the INLET VALVE--FLOW METER--LOW LEVEL SENSOR)

Press the DELAY START button---the DRAIN MOTOR will run for 45 seconds. Then---water will enter the tub.

When the PULSE COUNT (on the display) reaches "660" or greater---press the NORMAL button four times.

A flashing "t5" will be displayed & water will drain for 30 seconds. After 30 seconds---the "t5" will stop flashing.

Press the NORMAL button again---"t6" will be displayed. The word "OFF" should appear in the control panel display---indicating that the LOW LEVEL SENSOR SWITCH is in the correct position for *No Water* in tub.

If the INLET VALVE--LOW LEVEL SENSOR--FLOW METER function normally----replace the MAIN BOARD.


To eliminate:

Musty odor

L-O-N-G cycle times

Dingy/yellowing whites

Suds error message

Slow spin speeds

Intermittent water leaks (from rear of washer)

And other annoying symptoms which vary brand-to brand.

Read below:

The *correct* amount of HE (High Efficiency) detergent that should be used in any front load or agitatorless top load washer with tub sizes 3.0 cu ft and larger is as follows:

HE: (2) Tablespoons Per Wash Load

HE 2X: (1) Tablespoon

HE 3X: (1) Teaspoon

Perform a TUB CLEAN CYCLE every (4) months.

Use: "Tide Washing Machine Cleaner"

#3 jkilgore34

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Posted 05 October 2011 - 04:55 PM

I cleaned some gunk out of the water level sensor and found a piece of plastic in the drain pump housing just like you said. Thanks for the help.






Recent blog entries on this topic

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How to fix a Samsung DMR57 or DMR78 dishwasher making a grinding noise and error code 9E

By Samurai Appliance Repair Man in Samurai Appliance Repair Man's Blog, on 05 October 2011 - 07:55 AM

Sublime Master john63 reveals the kata for this encounter:

<<<There is a grinding noise when first started up>>>


*************************

Many Samsung DMR57 & DMR78 dishwashers are known for developing a rattling/grinding noise during DRAIN MODE.

This is...

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