Warm air is essential in the cold weather. You may have a day where everything goes right. That is, until you come home to a cold house. For some reason, your Comfortmaker furnace won’t start.
You try turning the thermostat on and off, and nothing happens. You might wish to check a few things before you call a repairman.
Look to see if the breaker is on, in the breaker panel. Occasionally breakers will trip. Next, look at the thermostat. Is it a digital model?
Look to see if it is energized. There should be a small arrow or line. This lets you know that power is going to the heating or cooling system.
Go down to the unit and see if anything is happening. Have someone turn the thermostat off and then on. If there is nothing happening, you should check the control panel.
Remove the cover from the control panel. Many of these are located on the blower motor panel. Examine the panel. Are there any fuses?
If you see fuses, you will need to check them. Some of them are easily checked. You simply examine the element. If broken, it needs to be replaced.
Other fuses are a little harder. You will need to pull them out. They may come out easily. You may need a fuse puller or needle nose pliers. When you pull the fuse, you can normally tell if it is blown. You can see the element. If you are uncertain you can check them with a multimeter.
Set the meter on continuity. If there is no continuity function, set it on resistance. Place the meter leads across the ends of the fuse. You will get a buzzer or tone for continuity. This means the fuse is OK. You will get a resistance reading, if the fuse is good. If it is bad there will be no resistance or no buzzer.
If the fuses are good, try to retrieve an error code. Check your owner’s manual for information. You may also find information on the unit itself.
In some cases, you will push a button and count the number of flashes of a code light. This may reveal a simple problem. However, you may need to call someone that is an experienced professional.
It is essential to have a working heat system in the wintertime. If yours will not start up, check the breaker box. Make sure that the thermostat is set properly.
If it is a digital thermostat, look to see if it is energizing. Check any fuses in the control panel. If they are good, retrieve error codes. This procedure will be covered in your manual.
There may also be information on a panel, located on the unit. Your problem may be easily solved. However, you may need to call a repairman.
Originally posted 2010-09-15 11:06:28.