[quote=garson01;305769]Joe/App Team:
Thanks for the quick reply.
I’ve no idea the difference between the two different Cntrl-Elec parts, but I am curious and wanted to ask a follow-up question and confirm I buy the correct “Cntrl-Elec”.
I created this total black-out / dispenser-failure while trying to replace one of the two bulbs in the refrigerator-side Control Box. I assumed I fried the Control Box Cntrl-Elec # AP3773712, out of ignorant/naïve cause & effect.
My questions: what does this Control Box Cntrl-Elec AP3773712 do?
I think I understand your reply; the Unit Parts Cntrl-Elec [COLOR=black]Part number: AP4411082 ensures electrical power to the doors (non-technical perspective)? If so, it means the unit doesn’t receive a signal to turn on the lights when the freezer/fridge door opens, and also the unit cannot read the signal that service (water/ice) is being requested?[/COLOR]
[COLOR=black]Again, I’m just curious…not trying to be a pain. Many thanks.[/COLOR]
[COLOR=black]Garson[/COLOR][/quote]
Garson,
Your refrigerator has two control boards :
(I’ll be using different terminology, and hope it helps)
AP3773712 - Is a "User interface/display board, This board is used for setting the desired temperatures and options available on the unit and has you’re display for temperatures, and is located in the control panel in the refrigerator.
AP441082 - Is a “Machine Control Board”, or power distribution board.
It basically tells the refrigerator what to do, by the inputs from the U/I board, and other components in the system.
(Temps, when to run the compressor, when to defrost,when to light the interior lights, etc.).
In your particular case,
When you were replacing the light bulb, with power on and the door open,
you had a constant, 120 VAC at the bulb socket, and caused a voltage “spike” or surge on the circuit and most likely shorted the “mini relay” for the door light circuit.
Based on your information, I’m relatively sure that your User Interface board is OK, as is your machine control board, because you stated everything is working except the dispenser, display, and interior lights.
Unfortunately, in order to activate the ligts and the display,etc. you’ll need the machine control board. Ap4411082.
As I stated in the previous post, you have 120VAC going to the door light switches(blue/yellow wire), with the door closed the switches are an open circuit, lights are off,display is off(the dispenser has a different configured door switch, so that the dispenser works on the freezer door).
When you open the door, the door switch closes, sends 120 VAC (on the yellow wire) back to the machine control board, the relay closes on the board,and sends voltage out to the display board , to illuminate the display,and the interior lights come on, because you’ve completed the circuit to the bulb on the blue/yellow wire.
So , with no 120VAC coming out of the machine control board, because of a damaged relay, there will be no display, no interior lights, and no dispenser display.
Hope this helps you understand better,
Good Luck,
