Leonard W Fayetteville , GA October 24, 2014 Appliance: LG Refrigerator LFX25975SW Lg Refrigerator Lfx25975sw / Asw1lga: Ice maker/water dispensor stopped working error code 1f. How to replace Main Electronic Control Board. I tried the reset by unplugging the unit for 24 hours. Error came back immediately. Since there were multiple failures (ice and water) I surmised that the failure was at the control board vice the icemaker blower motor. Repair took 15 minutes. Everything seems to be good now. 6 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes