Samsung dishwasher

Fully open the water supply cut-off valve for the dishwasher. If the valve is already open, unplug the dishwasher and shut off the water supply, and then disconnect the fill line and examine the water inlet valve. If the inlet screen is clogged, replace the water valve-don't just clean the screen, because debris could enter the valve body, causing the valve to stay open, resulting in flooding. Check the wiring connections on the water inlet valve and secure any loose connections. If the water valve won't open when activated, replace it.

Check the temperature of the hot water at your kitchen faucet. If the temperature is above 120 degrees, lower the setting on the water heater. If the water temperature is below 176 degrees, the thermistor (temperature sensor) is defective. Replace the thermistor. If the problem persists, replace the main power board assembly (PBA).

Unplug the dishwasher and reconnect any loose wires on the on the thermistor wire harness. Replace the wire harness if damaged. If the wire harness is okay, replace the thermistor. If the problem persists, replace the main power board assembly (PBA).

Clear clogs from the sink drain. Unplug the dishwasher and clear clogs from the dishwasher drain hose and drain pump. If the drain hose or the drain pump is damaged, replace it.

Unplug the dishwasher or shut off the house circuit breaker for the dishwasher to disconnect electrical power. If water continues to fill the tub, replace the water inlet. If filling stops when you disconnect power, replace the main power board assembly (PBA).

Check for a water leak under the dishwasher. Examine the hoses, drain pump and tub. Replace any leaking components.

Unplug the dishwasher and check the wiring connections on the heater. Replace the heater if it's damaged. If the heater is okay, replace the main power board assembly (PBA).

Unplug the dishwasher or shut off the house circuit breaker to disconnect electrical power. Carefully open the dishwasher door and check the temperature of the water in the tub. If the water is close to 176 degrees, the heater relay on the main power board assembly (PBA) is likely stuck in the Closed position; replace the main PBA. If the water is less than 176, the thermistor (temperature sensor) is likely defective. Replace the thermistor. If the problem persists, replace the main PBA.

Empty any dishes that flipped and are filled with water and restart the cycle. Adjust the leveling feet on the dishwasher if it's not level. Unplug the dishwasher and reconnect any loose wires on the wire harness for the water level sensor. Replace the wire harness if damaged. If the wire harness connections are okay, replace the water level sensor.

Press all the buttons on the control panel to attempt to free up the stuck key. If the key remains stuck, replace the control panel.

The diverter assembly controls spray-arm water flow in the half-load mode. Unplug the dishwasher and reconnect any loose wires on the diverter motor and diverter positions switch. Replace the wire harness if damaged. If the wires are okay, replace the diverter assembly, which includes the diverter motor, position switch and diverter plate. On some models, you'll need to replace the entire sump and motor assembly because diverter compoenents aren't available as separate parts.