What to do if elements are on, but motor does not run in Nortron Furnace?
If the elements in your Nortron Furnace are on but the motor isn't running, check the motor or capacitor, the RECIRCULATION MODE switch for open contact, and the bottom sequencer.
Why Nortron Furnace motor going on and off in short cycles?
If the motor in your Nortron Furnace is cycling on and off too frequently or infrequently, the heat anticipator in the thermostat may be incorrectly set or defective.
What causes the motor to go off, but one or more elements stay on in Nortron Furnace?
If the motor shuts off but one or more elements remain on in your Nortron Furnace, a faulty sequencer could be the cause.
What to do if two-stage or outdoor thermostat not operating properly in Nortron Furnace?
If your two-stage or outdoor thermostat isn't operating correctly with your Nortron Furnace, ensure the SEASON SELECT switch is not set to the MILD position.
Why thermostat must be set much higher than desired temperature in Nortron Furnace?
If the thermostat needs to be set much higher or lower than the desired temperature in your home when using your Nortron Furnace, the thermostat might not be leveled or could be out of calibration.
Why automatic speed change doesn’t occur when Nortron Furnace heats up?
If the automatic speed change doesn't occur when your Nortron Furnace heats up, check the top sequencer and the 240 V relay.
Essential warnings and cautions for furnace operation, installation, and maintenance to ensure user safety and prevent hazards.
Detailed electrical schematic for the 21B10M furnace, showing component layout and wire connections.
Detailed electrical schematic for the 21B15M furnace, showing component layout and wire connections.
Electrical schematics for 21B18M and 21B20M furnaces, illustrating component layout and wire connections.
Detailed electrical schematic for the 21B25M furnace, showing component layout and wire connections.
To Next Page
General
