Found outdoor system running upon arrival without operation of IFM. outdoor system was frozen. Found board not properly sending voltage to blower motor. Informed customer of fault and presented options HE20A-E. customer chose option a. Performed repair to find proper signal sent to IFM fan would cycle on but cut out in about 2 seconds. Found board short damaged blower motor windings or vise versa. Customer had IFM replaced in may. 1 year warranty. Called and ordered part. Will return with motor Monday afternoon to repair furnace