Viking Ice Maker Error Code 2 blinks

Two blinks on a Viking ice maker indicate that the bin thermistor (the sensor that monitors ice level and bin temperature) has been detected as open or shorted by the control board. This means the sensor's resistance reading is outside the expected range shown on the Resistance versus Temperature Chart. The machine will not operate normally until the fault is resolved. A technician should disconnect the thermistor and test its resistance with a multimeter to determine whether the sensor or wiring is at fault.

A power reset may temporarily clear the fault display, but the 2-blink code will return if the underlying thermistor or wiring problem has not been corrected. Resetting without addressing the root cause can also allow the machine to run unpredictably, since the control board relies on the bin sensor to manage ice production cycles. The fault must be resolved through proper diagnostic testing and repair.

Repair costs depend on which component is faulty. A replacement bin thermistor typically costs in the range of $20 to $60 for the part alone. If a technician is required for diagnosis and installation, labor charges can bring the total to roughly $100 to $250 or more, depending on your location and service rates. Control board replacement, if needed, would increase costs significantly above that range.

A knowledgeable DIYer can perform the initial diagnostic step by disconnecting the bin thermistor and measuring resistance across the wire leads with a multimeter, then comparing that reading to the Resistance versus Temperature Chart. If the thermistor reads open or shorted, replacing the bin thermistor is a relatively straightforward repair. However, if the wiring harness or control board is involved, a qualified appliance technician is recommended.

Operating the ice maker with an active bin sensor fault is not recommended. Without a functioning bin thermistor, the unit cannot reliably detect when the ice bin is full, which could lead to ice overflow or continuous cycling that strains the compressor and other components. It is best to discontinue use until the sensor issue is diagnosed and repaired.