Honeywell HZ709 Support Question
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Question posted by gmc73truck on November 19th, 2018
Oil Filled Heater Hz709
why is our heater overheat and not kicking off it is set at 70f but gets as hot as 79 fWH
Current Answers
Answer #1: Posted by perez2000 on November 20th, 2018 1:13 AM
Problem #1: Heat exchanger is overheating. A common reason a furnace short cycles is because the heat exchanger, the part that heats your air, is getting too hot due to a lack of airflow. Once the heat exchanger overheats, it trips the high limit switch, which shuts the furnace down to protect it
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