How to Troubleshoot a Furnace?

Answer

In troubleshooting a furnace means looking at the furnace, checking the ducts, and checking the filter. Vacuuming the ducts is a good idea as well.
1 Additional Answer
Furnace issues can really leave you out in the cold during winter. Make sure the power is running to the heater. If that doesn't work, the heater's reset button should be pushed. You can find out more information here: www.ehow.com
Q&A Related to "How to Troubleshoot a Furnace?"
1. Turn the electric furnace off. This may seem like an obvious step, but many people either neglect its importance or forget to do it. You have to flip the on-off switch on the furnace
http://www.ehow.com/how_2081144_troubleshoot-elect...
These parts sound very technical but are really nothing to be feared. thermocouple is used in an older standing pilot furnace and a flame sensor is used in an electronic ignition
http://homerepair.about.com/b/2012/12/04/how-to-tr...
If the furnace never gets to the point where the ignitor glows but the purge fan is running then you have narrowed it down to something in the exhaust system. Could be a faulty pressure
http://answers.yahoo.com/question/index?qid=201011...
1. Verify electric power to the furnace. If the furnace will not go into cooling, heating, or continuous fan mode, check to see if one or both of the LED lights on the front of the
http://www.ehow.com/how_12190951_troubleshoot-lenn...
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