Error code reference

Samsung Refrigerator Error Code Ice Duct Heater Error

Ice duct heater open error detected; caused by separation of ice duct heater housing part, contact error…

Ice duct heater open error detected; caused by separation of ice duct heater housing part, contact error, disconnection, or short circuit.

First step from the service manual

After separating MAIN PCB CN70 wire, check resistance between CN70 Brown and CN70 Gray; should be 63 ohm ±7% (230V). 0 ohm = heater short, infinite = wire/bimetal open.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
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