Error Code PC

The motor that directs water to different spray zones is not working properly

Also displayed as: No display

What This Means

Synchronous motor (distributor motor) is out of order; Distributor motor connector disconnected; Micro switch terminal disconnected; Distributor mechanism jammed; Cam assembly out of position; Main PBA defect

First Thing to Check

Parts Involved

How to Fix

1. 1

   1. Check the connections for the distributor motor and micro switch connectors — reconnect if loose

2. 2

   2. Check whether the coil in distributor motor is conductive (remove connectors before measuring) — Normal: approx. 3.6 to 4.0 k-ohms

3. 3

   3. Check the position sensing operations when turning the micro switch on and off using n5 service test mode — check conduction between brown wire and violet wire — Micro switch ON: Short, Micro switch OFF: Open

4. 4

   4. Micro switch sign should alternate ON/OFF — it is NG if it keeps in ON or OFF state for 120 seconds (do not supply with water during test)

5. 5

   5. Adjust Cam Assembly and find the faulty part — replace if faulty

6. 6

   6. Check whether half load is operating normally — check operating voltage between pin 3 (Brown) wire of CN401 and pin 1 (Red) wire of CN101 — Normal: 110-120V while operating

7. 7

   7. Check the Power Relay

This Error Applies To

Samsung DW80R706 Series Dishwashers (2019) (2019–present)