Samsung washing machine Internal heater fails to warm water

Wiki Article

When your Samsung washing machine fails to heat water, the issue can range from a simple external problem to a faulty internal component. A methodical troubleshooting approach can help you diagnose and potentially resolve the problem.

### Step 1: Check External Factors and Basic Settings

Before opening the machine, eliminate simple external causes. Ensure both hot and cold water faucets supplying the machine are fully turned on . Also, verify that the water hoses are connected to the correct faucets—the hot water hose should connect to the hot water supply. Check that the temperature selection on the machine's control panel is set correctly for a warm or hot cycle, rather than a cold wash .

The mesh filters inside the hose ends can become clogged with sediment, restricting water flow and potentially affecting the heating process. To clean them, turn off the water supply, disconnect the hoses from the back of the machine, remove the small filters from the hose ends with pliers, and rinse them under running water . If you live in a region where the washing machine connects only to a cold water supply, the machine relies entirely on its internal heater. In this case, a lack of hot water points directly to an internal issue. If you are still not getting hot water, check if your household water heater is set to deliver a minimum of 120°F (49°C) at the tap .

### Step 2: Check for Error Codes and Perform a Power Reset

Error codes are the most direct indicators of a problem. The most common codes for a heating failure on a Samsung washing machine are **HC, HE, HE1, or HE2** . On some models, these codes may also appear on a linked Samsung dishwasher display, sometimes indicating a high-temperature heating issue .

If you see any of these codes, the first and simplest step is to perform a power reset. Turn the washing machine off at the power point, unplug it, or switch it off at the circuit breaker. Leave it without power for about **five minutes** to allow the internal components to reset . After five minutes, restore power and try running a cycle. If the error code reappears or the water remains cold, the problem is likely internal and requires further investigation.

### Step 3: Internal Component Diagnosis (Advanced)

If the external checks and reset fail, the issue is likely with an internal component: the heating element, the temperature sensor (thermistor), or the main control board/wiring. *Important: Diagnosing these components requires a digital multimeter and involves working with electricity. If you are not comfortable, it is best to seek professional service.*

**The Heating Element:** This is the component that physically heats the water. Its resistance can be checked using a multimeter. The expected resistance varies by model; for example, service manuals indicate a heating element might read **27.1Ω (for a 1900W heater) or 26.2Ω (for a 2000W heater)** . Another manual lists a value of **16.05±0.65Ω** . Compare your reading to the specifications in your machine's service manual. An "open" circuit (infinite resistance) indicates a faulty element that needs replacement.

**The Temperature Sensor (Thermistor):** This sensor monitors the water temperature and sends feedback to the control board. If it fails, the board may not know to turn the heater on. Service manuals often give a reading of **12kΩ** at room temperature . In some user forums, a reading in the range of **66.187KΩ to 36.941KΩ** is noted for other models at operating temperatures . A faulty sensor might show infinite resistance (open circuit), near-zero resistance (short circuit), or a reading that does not change when you warm it with your hand .

**Wiring and Control Board:** Even if the heater and sensor test good, the issue could be a broken wire in the harness connecting these components to the main control board. Vibration during use can cause wires to break over time . Check the wiring harness for visible damage. If the wiring is intact, the main control board itself may be faulty.

### When to Call a Professional

If the power reset does not work and your component checks indicate a faulty heater, thermistor, or wiring issue, professional assistance is required. Replacing these parts often involves disassembling the washing machine and safely handling electrical components. Contact Samsung support or a qualified appliance technician if a simple reset doesn't solve the problem . You can also refer to your user manual for model-specific troubleshooting information.