Years ago when an important necessity—like a gas powered furnace—decided to stop working, folks attributed it to little mythical creatures called Gremlins.
Today we know better than to blame the case of a Coleman furnace not working on little mischief-causing mythical creatures, but the problem still remains. What do you do on that one snowy day when your furnace decides to an extended lunch break without warning?
The very first step to take is checking the fuse box and the circuit breaker. Make sure that the unit is indeed receiving power. If your power supply checks out, take a look at the power switch.
Coleman units have a power switch that has an “On” and “Off” position. For peace of mind, make sure the switch it flipped to “On.” If it is, then on to the next troubleshooting step:
In the case of a Coleman furnace not working, it is possible that the motor has overheated. Typically this does not happen. However, if your unit has been running for several hours it is possible. The best course of action is to let the unit sit for about half an hour.
Start it again after this cool down period. If the unit does not start, check the pilot light. If the pilot light is not burning, re-light it after ensuring there are no gas fumes present. If you smell gas, avoid any further troubleshooting and contact local authorities as you leave the area.
If no gas fumes exist and re-lighting the pilot light does not work, next check the gas valve. It should be completely over. If not, open it completely. This covers the basics of troubleshooting a furnace that is not working. If these steps do not remedy the unit, it is time to contact a local dealer and ask for a qualified technician to come investigate the problem.
In good news, most consumers are happy to call their local dealer. Local dealers have quick response times, and in most causes their warranty covers all of the work. While your Coleman furnace not working is an inconvenience, it is a fixable problem that even a Do It Yourselfer can have a stab at handling.
Originally posted 2011-09-12 11:52:48.