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Samurai Appliance Repair Man's Blog



How to troubleshoot a Samsung dishwasher with an HE error code

Posted by Samurai Appliance Repair Man, in Dishwasher Repair 08 September 2011 · 4,370 views

Master john63 enlightens us:

Usually a failed HEATING ELEMENT or HEATER RELAY.


Disconnect power & remove the dishwasher from under the counter.

The HEATER RELAY is located on the right side of the D/W. A metal panel/shield (on the right side) must be removed to gain access for testing.

Testing the HEATING ELEMENT *can* be done from the bottom/front---but is easier if the D/W is placed on it's back---and removing the bottom cover/panel.

In many cases I have seen failed HEATING ELEMENTS or RELAYS on Samsung D/Ws---in homes which had an INSTANT WATER HEATER (AKA: Tankless Water Heater).
This type of Water Heater requires a minimum GALLON-PER-MINUTE of water flow---before it will *heat* the water.
Many dishwashers have a lower GPM flow rate than required---this results in NO HOT WATER at all during water fill.
The D/W heating sytem remains "on" for long periods of time---each time the D/W is used.
Eventually the HEATING ELEMENT or HEATER RELAY fails.


Part link for the heating element ==> Heating Element


Source: Samsung dishwasher DMR78AHS -- HE is displayed


How to remove the oven light switch, door latch assembly, and hi-temp cutout on a Thermador CM302US oven

Posted by Samurai Appliance Repair Man, in Oven-Range-Stove Repair 06 September 2011 · 1,449 views

Master Reg illumines us:

from page 35 of the C302 service manual


REMOVING THE OVEN LIGHT SWITCH,
THE OVEN DOOR LATCH ASSEMBLY
and THE HI-TEMP CUTOUT


WARNING
Turn off the electrical power circuit to the oven at the main junction box before servicing this unit.

CAUTION
When you work on the oven, be careful when handling the sheet metal parts.
There are sharp edges present and you can cut yourself if you are not careful.


Refer to Figure 19 on the next page for the following steps.
1. Turn off the electrical power to the oven.
2. Open the oven door for the component you wish to remove.
3. To remove the upper air vent grille, remove the four bottom screws and the two front oven door latch screws.
4. To remove the lower air vent grille, remove the two front oven door latch screws, (see Figure 18),
then pull the posts on the ends of the air vent grille out of the catches in the chassis.
5. To remove the oven light switch, disconnect the wires from the terminals, press in on the locking arms,
and push the switch out of the vent (see inset 1).

6. To remove the oven door latch assembly (see inset 2):
a- Use a 1/4" ratchet and a 1/4" thin-wall socket and remove the two front hexhead screws from the latch bracket.
b- Pull the latch assembly to the right so that the flange on the left side clears the bracket,
and then pull it forward as far as the wires will allow.
c- Remove the wires from the switch connectors and the motor wires from the main harness.
d- To replace a door lock or door unlock switch on the latch assembly,
remove the two screws from the switch body, and remove the switch.



Source: THERMADOR CM302US UPPER DOOR LATCH INSTRUCTIONS


How to test the touchpanel keyswitch contacts in a Maytag MDB dishwasher

Posted by Samurai Appliance Repair Man, in Dishwasher Repair 04 September 2011 · 1,214 views

Master Reg lays out the drill:

Checking keyswitch contacts:

Unplug dishwasher or disconnect power.
Remove connector P1 from the control board.
Using the table below,
http://appliantology...-ii-dishwasher/
measure the resistance across the switch when the key is pressed.
NOTE: The meter must be connected with the proper polarity.
This test will not work on models with a “touch sensor” type user interface.
The resistance reading should go from infinity (open circuit) with the key open
down to a readable Ω level with the key pressed.
The level may be different depending on your meter, since there is a diode in the circuit.
If available, you could use the “Diode Test” function of a digital meter,
which will give a voltage to turn on the diode in the circuit.
➔If any switches fail this test, replace the console panel/keypad assembly.
➔If all switches test OK, replace the machine control board.

KeyPad assembly
click on picture
Posted Image


Part links:

W10240046 Black
W10240047 White
W10240048 Biscuit


Source: Maytag mdb6709aws0 dishwasher inop.


Check your notification settings for your watched forums and topics

Posted by Samurai Appliance Repair Man, in Forum Tips 02 September 2011 · 760 views

I upgraded the forum software to the latest version. Went pretty smoothly and we're sporting a clean new look with lots of cool new features. But, as always, there's bound to be a glitch or two. One in particular that's come to my attention is the notification settings for your watched forums and topics.

I noticed I wasn't getting notifications of replies to topic that I had posted in. I also wasn't getting notifications for new posts in forums I'm watching. Have had others message me about this, too. Turns out this is a "known" issue with the upgrade; known to developers but not to me!

But no biggie-- the fix is easy: just check/reset your notification settings in your control panel.

Watch my short screencast that shows you how to do this ==> http://screencast.com/t/v2oCSzRdY


Troubleshooting information on transorbs used in GE Triton dishwashers

Posted by Samurai Appliance Repair Man, in Dishwasher Repair 01 September 2011 · 1,886 views

First, begin with my seminal tome on the topic ==> http://fixitnow.com/...ircuit-breaker/

And then on to this enrichment material from Master Reg:

here's some info.

also: Service Bulletin GE TRITON XL DISHWASHERS

GSD6000 SERIES
PDW7000 SERIES
EDW4000 SERIES

Transorb kit

*Shorted Transorb will likely damage the main electronic control board.
click on picture
Posted Image

seems to be a 1.5KE220CA Bi-directional TVS Diode
(about $1)
1500w peak 220v C = bi-directional

Posted Image


Source: GE Dishwasher Mod# GSD3900L00BB






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