Jeff O Middletown , CT June 23, 2022 Appliance: LG Refrigerator LFX25975ST Lg Refrigerator Lfx25975st / Astclga: "er 1f" error code on LG refrigerator. How to replace Ice Maker Cooling Fan Assembly. Very simple process! I entered the refrigerator model number, sourced the fan assembly on the website and the video was excellent - it was step by step and crystal clear. Highly recommend for even the most novice of DIY homeowners! Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes