Haier Refrigerator Error Code 2nd LED Freezer flash

The 2nd LED Freezer flash on a Haier refrigerator indicates a defrost sensor (D SNR) error. The sensor is a thermistor positioned above the freezer evaporator coil, and it monitors temperature during the defrost cycle. When the control board detects that the sensor signal is missing or outside its expected range, it triggers this fault code. The refrigerator cannot reliably complete defrost cycles while this error is active.

Continuing to run the refrigerator with this error active is not recommended for extended periods. Without a working defrost sensor, the refrigerator cannot properly control its defrost cycle, which can lead to ice accumulating on the evaporator coil and a gradual loss of cooling performance. Food safety may be compromised if cooling becomes significantly impaired.

Unplugging the refrigerator for a few minutes and restoring power may temporarily clear the error display, but the fault will return if the underlying sensor problem has not been resolved. A reset does not repair a failed thermistor, broken wire, or bad connection. Proper diagnosis and repair of the defrost sensor circuit is required to permanently clear this error code.

A knowledgeable DIYer can attempt diagnosis by inspecting the sensor wiring, reseating connectors, and testing the thermistor's resistance with a multimeter. If the sensor has failed, replacing the defrost thermistor is a relatively straightforward repair that involves accessing the freezer evaporator panel. However, if the wiring or control board is involved, the repair becomes more complex and a qualified technician may be needed.

If only the defrost thermistor needs replacement, parts typically cost in the range of $10 to $40 depending on the specific model. If a technician is hired, total repair costs including labor generally fall in the range of $100 to $250. Control board replacement, if required, can bring costs considerably higher, often in the $200 to $400 range or more.