Samsung dishwasher error code 4c

The information on the display of the dishwasher is extremely useful and important. Indeed, in addition to corresponding indicators (clean & dirty, rinse aid refill, cycle- and remaining time indicators), the electronic panel can display diverse error codes, including the 4C (4E) error code, one of the most common failures of Samsung dishwashers.

Samsung dishwasher error code 4c

4С Error Code: Description

The given error code indicates a problem related to the water supply. In other words, the water does not come into the dishwasher, so it cannot start the cycle and gives a warning of a problem. Before inspecting the appliance, it is recommended to check if everything is ok with your home’s plumbing. These are the main causes for the 4С error code to appear:

  • the water supply tap is shut;
  • the water pressure is too low or, vice versa, too high;
  • there is no centralized water supply;
  • there are water pipe failures.

The next reason is a short-term malfunction in the control unit. Actually, it is the most possible reason if the 4C error has appeared for the first time. In this case, reboot the dishwasher by leaving it unplugged for 10-15 minutes. If after restarting the dishwasher is still displaying the 4C error code, you need to check the main elements and units.

4 C Error Code: Reasons

If the plumbing is ok and the control unit works perfectly, but you still can’t enjoy your Samsung dishwasher, then the 4C error code is definitely caused by other factors. For instance,

Faulty Water Supply Hose

Check the water supply hose connected to the water pipe. Make sure that there are no kinks or bends in the water hose. Disconnect it from the dishwasher, place the free end in an empty container, and open the tap to see if the mesh filter is blocked or not. If the water does not pass through the hose then it is clogged. Rinse the mesh filter with a strong water jet until it is clean.

Closed Water Inlet Valve

Check the water inlet valve, which is aimed at filling the dishwasher with the proper amount of water. Accidentally it may get stuck in the closed position so the water stops flowing into the dishwasher. Turn the valve clockwise and then back to open the passage to full. The 4C error should disappear.

Blocked Mesh Filter

The mesh filter fitted in the water supply hose traps sand and other fine impurities. If you haven’t cleaned it for a long time, an accumulation of food and other scraps can create clogs that do not allow water to pass normally, causing certain problems. Make sure that the mesh filter is not clogged or damaged.

  • Disconnect the dishwasher from the power source and turn off the tap.
  • Unscrew the water supply hose from the appliance.
  • Gently pull out the mesh filter from the hose with a pair of pliers (be careful, it is very fragile).
  • Rinse it under running water until it is clean.
  • Reinsert the mesh filters and screw the water hose back onto the dishwasher.
  • Switch on the dishwasher to start a cycle and make sure that the 4C error code has disappeared.

Problems with a Tube between the Water Supply Hose and the Detergent Dispenser

The transparent tube may be damaged or bent. Besides, it may occasionally fall out of the hose connector when moving the appliance. Position it correctly or replace it to let the water flow.

Non-Compliance with the Rules of Connection

Samsung dishwashers usually have inlet valves for hot and cold water. Check that hoses are connected to the correct faucets as it also leads to the 4C error appearing on the display.

Wiring Integrity Violation

The 4C error code on Samsung dishwasher screen may indicate the open circuit or wired contacts caused by:

  • disconnected valve winding (loop connectors are out of grooves);
  • breakage in the control circuit;
  • rusted wiring located at the bottom of the door.

Test the contacts with a multimeter. If necessary, repair damaged wiring or completely replace the loop.

Broken Water Inlet Valve

However, the most common reason for the 4C error code is a faulty electromagnetic coil in the water inlet valve. The water inlet valve on your dishwasher is a part that connects two water hoses to the appliance. It has two threaded ports, which are controlled by a solenoid valve. So, when noticing the 4C error code, check the valve with a multimeter.

  • Gain access to the valve to disconnect it from the dishwasher.
  • Test each solenoid for continuity by connecting to the 220V
  • Touch the end of the solenoids with a multimeter probe to read the resistance (2-4 kOhm).

In case the valve does not respond to the supplied current and the multimeter indicates above/below norm resistance, the solenoid is faulty, and the valve must be replaced. If the valve opens, but cannot close, it means either the membrane has worn out or the spring stem has lost its elasticity. You need to buy and install a new water inlet valve. Its approximate price is $55.

Burned Control Board

The control board is the brain of the appliance. If you are sure all the parts and elements work perfectly, but the 4C error still occurs, then the control unit incorrectly interprets the signals or does not supply voltage to the water inlet valve. Solder the damaged tracks by yourself or contact the service center to check and replace the chip.

Author: David Hoover