Error Code 4C

The dishwasher isn't getting enough water

Also displayed as: 4C

What This Means

Water supply pressure is too low; Water supply valve is closed; Aqua stop is out of order; Case brake fails to detect pulse; Foreign material in water supply line or inlet valve filter; Inlet valve coil defective; Flow meter defective; Main PBA defect

First Thing to Check

Parts Involved

How to Fix

1. 1

   1. Check that the water faucet/valve under the sink is open

2. 2

   2. Check if the home water supply has been cut off

3. 3

   3. Check for foreign material in the water supply line and inlet valve filter — clean with a brush

4. 4

   4. Check and reconnect inlet valve connector

5. 5

   5. Measure inlet valve coil resistance (disconnect first) — normal: approximately 1.2 kOhm

6. 6

   6. Check inlet valve operation — measure 120V at inlet valve relay while operating

7. 7

   7. Check whether water is in tub — if not, check terminal connections and filter for foreign substances

8. 8

   8. Check whether flow meter is working normally

9. 9

   9. Check whether pressure switch (water level sensor) is working normally

10. 10

    10. If all components test normal, replace Main PBA

This Error Applies To

Samsung DW80K5050U Series Dishwashers (2020) (2020–present)