Error Code PC

The water spray distribution motor is not working properly

Also displayed as: No display

What This Means

Synchronous motor is out of order; Location in the cam is incorrect; Micro Switch defective; Distributor Motor defective

First Thing to Check

Parts Involved

How to Fix

1. 1

   1. Check the connections for the Distributor Motor and Micro Switch connectors — reconnect

2. 2

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

3. 3

   3. Check position sensing operations when turning the Micro Switch on and off (use n5 service test mode). Check conduction between brown wire and violet wire — Micro switch ON: Short, Micro switch OFF: Open. It is NG if keeps ON or OFF state for 120 seconds. Do not supply water during test

4. 4

   4. Adjust Cam Assembly and find fault — if faulty, replace Cam Assembly

5. 5

   5. Check whether half load is operating normally — check operation voltage: Normal 110-120V. Check Distributor Motor Relay: voltage between pin 8 (Brown) of CN401 and pin 1 (Red) of CN101. Normal: 110-120V while operating

6. 6

   6. Check the Power Relay

This Error Applies To

Samsung DW80B7070A Series Dishwashers (2023) (2023–present)