Samsung Bespoke Dishwasher HC Overheating Error... | digitalhomefaults.org

Technical Background:

The Samsung Bespoke Dishwasher uses a thermistor (NTC resistor) to monitor water temperature within the heating element housing. The main control board interprets the thermistor's resistance value to regulate the heating element's power. A faulty thermistor, relay, or control board can lead to unregulated heating. The communication protocol between the thermistor and control board uses a 5V DC signal.

Symptoms:

The Samsung Bespoke Dishwasher displays the 'HC' error code on the front panel LED. App-side notification indicates 'Overheating detected' with a logged timestamp. Water temperature may be elevated even after the wash cycle is complete. Malfunction reported under normal Canadian water pressure (40-60 PSI).

Possible Causes:

Faulty thermistor providing inaccurate temperature readings.
Triac failure on the main control board causing continuous power to the heating element.
Relay stuck in the 'on' position, bypassing the thermistor control.
Blockage in the water circulation pump, reducing water flow and causing localized overheating.
Hard water deposits on the heating element, reducing heat transfer efficiency.
Firmware bug misinterpreting sensor data.

Solution:

1

Disconnect the dishwasher from the power supply (breaker lockout). Verify voltage absence using a multimeter.
2

Locate the thermistor near the heating element. Disconnect and measure its resistance using a multimeter. Compare with the manufacturer's specifications at room temperature (25°C). A significant deviation indicates a faulty thermistor.
3

Inspect the main control board for signs of burnt components, especially around the triac controlling the heating element. Replace the control board if damage is evident.
4

Check the water circulation pump for obstructions. Remove any debris that may be blocking the impeller.
5

Descale the dishwasher using a dishwasher cleaner to remove hard water deposits. Follow the manufacturer's instructions.
6

Check the firmware version and update to the latest version available through the SmartThings app (OTA).
7

After completing repairs, perform a test cycle and monitor the water temperature using an external thermometer to ensure it stays within the specified range.

Safety Warning:

Always disconnect the dishwasher from the power supply before performing any repairs. Water and electricity are a dangerous combination. Do not attempt repairs if you are not comfortable working with electrical appliances. Contact a qualified technician. Never bypass safety features. Ensure proper grounding.

Prevention:

- Descale the dishwasher every 3-6 months to prevent hard water buildup, especially in regions with hard water (Prairies). - Regularly clean the filter to ensure proper water circulation. - Check and update the dishwasher's firmware regularly through the SmartThings app. - Monitor water hardness levels and use a water softener if necessary to reduce mineral deposits.

Expert Tip:

A quick way to check the heating element's relay is to use a non-contact voltage tester near the relay while the dishwasher is off. If voltage is detected, the relay is likely stuck in the 'on' position and needs replacement.

Frequently Asked Questions

•How do I manually reset my Samsung Bespoke Dishwasher?

Disconnect the power for 5 minutes, then reconnect. If the error persists, press and hold the 'Start' and 'Delay Start' buttons simultaneously for 5 seconds.

•Where can I find the thermistor on my Samsung Bespoke Dishwasher?

The thermistor is typically located near the heating element, usually at the bottom of the dishwasher tub. Consult the service manual for precise location.

•What is the typical resistance value of the thermistor at room temperature (25°C)?

The typical resistance value is between 10kΩ and 15kΩ. Refer to the datasheet for exact specification. This will vary slightly depending on the precise model number.

Samsung Bespoke Dishwasher HC Overheating Error Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

Frequently Asked Questions

•How do I manually reset my Samsung Bespoke Dishwasher?

•Where can I find the thermistor on my Samsung Bespoke Dishwasher?

•What is the typical resistance value of the thermistor at room temperature (25°C)?

Related Questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: