Error Code 4C
The washer isn't getting water when it needs it
Moderate
Address soon - your appliance may not work properly
Also displayed as: 4C
What This Means
Foreign material entering the water supply valve; Water supply valve terminal is not connected (wire disconnected); Warm water and rinse connectors are wrongly connected to each other; PCB terminal from the drain hose to the detergent drawer is not connected; Transparent hose is folded or torn; Cold and warm water supply hoses are wrongly engaged into each other; Main PBA fault; Water supply blocked due to alien substance in the valve; Frozen water supply
What actually causes this:
The water faucets behind the washer are turned off, or the inlet filter screen is clogged with sediment
First Thing to Check
Make sure both hot and cold water faucets behind the washer are fully open
Parts Involved
How to Fix
- 1
1. Measure the resistance of the water supply valve. Resistance: 0.9 kΩ to 1.1 kΩ between the terminals of the Water Supply Valve
- 2
2. Check whether there is foreign material in the Water supply valve filter — take the appropriate countermeasure if a problem is found
- 3
3. Check if the water is supplied to the machine
- 4
4. Check if the water supply is blocked due to frozen water or an alien substance in the valve
- 5
5. If the PBA Relay malfunctions, replace the PBA
Other Error Codes for WA50M7450AP
The washer's WiFi module isn't communicating properly
The washer's display screen isn't communicating properly
The washer's motor controller isn't communicating properly
The vibration sensor board has a problem
The washer's door release module isn't communicating properly
The washer can't tell how much water is inside
The washer's motor can't spin properly
The incoming water is too hot for the selected cycle