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Author Topic: Samsung Frontload (WF431ABP) - Cannot Reset New Main PCB  (Read 2307 times)

Offline rockinrobin

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Samsung Frontload (WF431ABP) - Cannot Reset New Main PCB
« on: July 10, 2015, 01:32:57 PM »

Old PCB would power On but had issue with ND Fault Code (in Service Mode during Drain the PCB Heater Relay would click On 1 second then click Off and 0 VAC for Drain Pump at CN3 Pin 3 & CN2 Pin 3 - Pump had 15 Ohm's and Impeller Turned Freely with resistance every 1/2 turn).
Therefore, I ordered a new Main PCB but I cannot Clear EEPROM on Main PCB (Good or Fail doesn't show up on Display) and this Unit will not power On.
The Tech Sheet for this Model is a little confusing since the Main PCB Diagram shows CN2 with 3 Wires (Pin 1 & Pin 2 should have 120 VAC going into Main PCB) but this Unit only has 2 Wires (Pin 1 Black & Pin 3 Blue - no wire on Pin 2).
Also, Tech Sheet shows Control Panel Diagram with Silver Care button for Diagnostic Testing but this Unit doesn't have a Silver Care button.
« Last Edit: July 10, 2015, 01:41:22 PM by rockinrobin »

Offline rockinrobin

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Re: Samsung Frontload (WF431ABP) - Cannot Reset New Main PCB
« Reply #1 on: July 16, 2015, 12:20:08 PM »
Exchanged for another New Main PCB and same issue (cannot Clear EEPROM on Main PCB ).
I have attached the Tech Sheet but this Unit doesn't have a Silver Care button for Diagnostic Testing so is there an alternative button (like Extra Rinse) or does any one have a Service Manual with more info. 

 

Offline TPerkins

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Re: Samsung Frontload (WF431ABP) - Cannot Reset New Main PCB
« Reply #2 on: July 16, 2015, 03:02:15 PM »
Here is the updated fast track for your model. This one was put out about 12 months after the one you have.



"EEPROM Clear Check
Power off, Press Delay Start, Signal and Power Key at the same time. Good = Good Fail = FAiL
All memory will be cleared, including Fault Codes
This should be done when a new Main PCB is installed"


I noticed this was added to the revised fast track.
« Last Edit: July 16, 2015, 03:08:28 PM by TPerkins »

Offline rockinrobin

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Re: Samsung Frontload (WF431ABP) - Cannot Reset New Main PCB
« Reply #3 on: July 16, 2015, 04:08:34 PM »
Here is the updated fast track for your model. This one was put out about 12 months after the one you have.



"EEPROM Clear Check
Power off, Press Delay Start, Signal and Power Key at the same time. Good = Good Fail = FAiL
All memory will be cleared, including Fault Codes
This should be done when a new Main PCB is installed"


I noticed this was added to the revised fast track.
Thank You!
I was using old Tech Sheet for troubleshooting the ND (No Drain) Code and now I realize it's totally wrong (Samsung sucks) so most likely I have misdiagnosed the ND issue.