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I have a hydro flame 7916 II in my fleetwood popup. This past weekend was the first time we ever had to use the heater. Every time the heater shut off the on/off circuit brkr switch tripped. I noticed the diag. LED blinking once with a three second pause, so I referred to the install. manual. It is telling me there is a limit switch/airflow problem. Am I setting the thermostat to high ? I noticed when I set it less than half way it works fine but anything more than halfway on the stat. it trips out. Is this normal or is my limit switch going out? Switch is rated at 170 degrees. Thanx
Limit tripping is usually a bad limit switch or restricted air flow. The switches do go bad but the fact that by setting the t stat higher and having it trip says that it will only a limited time before the limit goes bad either way. Replace the limit switch, they are cheap, and while you are working on it check every intake and exsaht vent to insure best possible air flow. Good Luck
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