This year my furnace was being temperamental. The burner would turn on then shut down. The fan would continue to blow cool/ cold air all night and it would not get above 63 degrees.
So off to the mechanical room I go! These are my steps to resolving my issues and something I do every winter just to keep this old gal running!
PARDON THE IMAGE QUALITY: ALL IMAGES WHERE TAKEN HANDHELD, NO TRIPOD AT HIGH ISO AND NO FLASH.
Step 1: Power Off!
Step 2: Remove Panels
Note the switch in the lower panel. This will shut down the furnace and prevent ignition if working properly.
Step 3: Check for Codes
I know this sounds stupid but just keeping your unit clean will help more than you can imaging. While your doing this look for loose wires and anything else that may be of concern.
Being this has happened in the past I cleaned and immediately went to the flame sensor. This sensor is also a great thing to clean yearly. Carbon can build up on this sensor and cause all sorts of issues.
Step 4: Check/ Remove / Clean
The flame sensor will be hanging below the manifold shelf and in front of a burner.
Now remove the flame sensor. This is simple a screwdriver or in my case a multitool is more than enough. Simply unscrew.
The flame sensor should be sanded with ultra fine emery cloth... Your wife's/ girlfriends/ sisters emery board will also work.
Sand the carbon off until it is nice and shiny. ( Grey Color Is Carbon)
Step 5: Burners
Watch this closely.
Make sure the electronic ignition is clicking on and burners ignite within about 10 seconds.
The flame at this point shod be mostly blue with but still have an orange glow.
The igniter should turn off shortly after burners fire.
Flame should now be blue and maintain that color. A few random blips of orange is not a concern.
While this is running simply do a visual to make sure everything just looks okay.
Sometimes furnaces will need to cycle multiple times. Mine needed to once. Threw a roll out high limit code then shut off and re-fired in normal operation.
Step 6: Last Step
The furnace will again fire normally, shut off then fire again with no codes. if this happens put the panels back on and enjoy no e warm air worry free.
DON'T FORGET TO CHECK/ CHANGE YOUR FILTER IF NEEDED. THIS IS ALSO A GOOD TIME TO GET IN YHE HABIT OF AND CHANGE THOES SMOKE BATTERIES IN YOUR SMOKE ALARM AND CARBON MONOXIDE DEFECTORS!
Check out my photo and video pages: