Samsung Refrigerator Error Code Water Tank Heater Error

This error indicates that the main control board has detected a fault in the water tank heater circuit. The heater is an optional component designed to prevent the internal water tank from freezing. The board monitors the circuit through connector CN30, and the error is set when the resistance reading falls outside the acceptable range of approximately 58.6 to 67.4 ohms. The root cause can be a shorted heater, an open bimetal protector, or a wiring failure.

A shorted heater (0-ohm reading) carries a higher safety concern because a short circuit can generate heat or damage the wiring harness over time. An open circuit fault is generally not an immediate safety risk but will leave the water tank unprotected from freezing in cold environments. It is best to address the error promptly rather than leaving a shorted component energized.

A power reset may temporarily clear the error code from the display, but the code will return as soon as the control board re-checks the heater circuit if the underlying fault still exists. Because this error is based on a measurable resistance value in a physical circuit, the only way to permanently clear it is to repair or replace the faulty component, whether that is the heater element, the bimetal protector, or the wiring.

A knowledgeable DIYer with a multimeter can perform the first diagnostic step by disconnecting connector CN30 from the main PCB and measuring resistance between pins 6 and 8. If the reading is 0 ohms or infinite, the faulty component (heater element, bimetal, or wiring) needs to be located and replaced. Replacing wiring or a heater assembly is within reach for confident DIYers, but working near electrical components in a refrigerator requires caution and unplugging the unit first.

Repair costs vary depending on the failed component. A replacement water tank heater assembly typically ranges from $20 to $60 in parts. If a technician is needed for diagnosis and replacement, total costs including labor generally fall between $100 and $250. A main PCB replacement, if needed, can push costs higher, typically ranging from $150 to $350 or more for parts alone.