Nearly 3.4 million major home appliances were shipped in September and 9.9 million in the third quarter to establish new shipment records for both periods, according to a report from the Assn. of Home Appliance Manufacturers. Shipments were up 3.9% in September and 2.3% in the third quarter, compared to the same 1984 periods. The records bring the industry within reach of a a new annual record, said Robert Holding, association president. Year-to-date shipments surpassed the same period last year by about 5.6%.