Samsung Error 4C Low Water Pressure Aggravating Issue

Brand: Samsung
Model Number: DW80R5060US
Main Symptom: Code 4C
What happens & when:

Error Code (if any): 4C
Parts or tests already tried: Water valve screen; new supply hose; Case Break Assembly, Dishwasher Electronic Control Board OEM
Photos / video link:

The 4C code started out as intermittent. Somewhere in any cycle, and often at the rinse stage. I’ve been trouble shooting and parts replacing for several weeks to my wit’s end!

After all the easy usual suspects, I ordered and installed a Case Break Assy. That made things WORSE!!! The D/W would not fill on any cycle!! We had to rinse out and reinstall the old Case Break Assy to get the D/W back to the intermittent but functional stage.

We ended up ordering a Control Board from ApppliancePartsPros. Now the D/W will fill and wash through any cycle, but throws the 4C frequently AT RINSE ONLY??!! How could the Samsung fill and wash through several steps and then decide that there was not enough RINSE water?? I thought water supply problems would be systemic?! PLEASE HELP!!

If you replaced the control board, try to replace the case brake again and see if this will resolve the issue.

If I order a 2nd Case Break Assenbly from Appliance Parts Pros, and it does not fix the issue, am I allowed to return the part? I’m a senior on a fixed income, and I can’t just buy parts and stack them up in a corner if they don’t work!

If you still have the case brake that you previously ordered just install it. If it is an electrical part, they cannot be returned.

As I wrote above, I DID ORDER A CASE BRAKE FROM APPLIANCE PARTS PROS AND INSTALL IT. As I wrote above: “*The D/W would then not fill on any cycle!! We had to rinse out and reinstall the old Case Break Assy to get the D/W back to the intermittent but functional stage!”
*
Why would you suggest that I reinstall the defective replacement part sold to us from appliance parts pro?