Haier Refrigerator Error Code 2nd LED Refrigerator flash

The 2nd LED Refrigerator flash indicates a fault with the R1 SNR, the primary temperature sensor located at the refrigerator damper assembly. The control board has detected that the sensor signal is absent or outside its accepted range. This prevents accurate temperature monitoring in the fresh food compartment and requires diagnosis of the sensor, its wiring, and connector.

Continuing to run the refrigerator with an active R1 sensor fault is not recommended for food safety. Without a valid temperature reading from that sensor, the control board cannot reliably regulate damper position, which may result in the fresh food compartment running too warm. Perishable food could spoil more quickly than expected while this fault is present.

A power reset by unplugging the unit for several minutes may temporarily clear the error code, but the fault will return if the underlying sensor or wiring problem has not been corrected. The control board will re-detect the out-of-range signal as soon as it resumes monitoring. A reset alone is not a repair and should only be used as part of the diagnostic process.

A knowledgeable DIYer can check for obvious wiring damage and inspect the sensor connector for corrosion without special tools. However, confirming whether the R1 NTC sensor has failed requires a multimeter to measure resistance and compare it against expected values at a known temperature. Replacing the sensor at the damper assembly involves disassembling part of the fresh food section interior, which is manageable but requires care to avoid damaging other components.

If only the R1 SNR sensor needs replacement, parts and labor typically range from $75 to $200 depending on the specific model and local labor rates. If the wiring harness requires repair or replacement, costs can range from $100 to $300. A main control board replacement, if needed, is the most expensive scenario and can range from $200 to $500 or more including labor.