Learn how to check voltage from neutral to ground to troubleshoot a furnace.
Learn how to troubleshoot a furnace by isolating the thermostat.
Nathan discusses how to troubleshoot a unit with flame failure.
Learn how to troubleshoot an open limit fault on a furnace.
Here Greg Brunts explains how to quickly determine which pressure switch is causing an open pressure code on the control board when the furnace has more ...
Here Greg Brunts explains how to properly determine if a pressure switch has failed or is it doing what it should do.
Here Greg Brunts explains how high resistance in the limit circuit can give a false code on the control board.
Here Greg Brunts explains how to troubleshoot the limit circuit on a single stage furnace using a voltmeter and an ohm meter.
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