[Richard F]

why does my oil fired furnace keep short cycleing on for 3 minutes then fan only then furnace back on for another 3-4 minutes

 

[beenthere]

Sounds like low air flow. Check your air filter. A/C coil may be dirty.

 

[beenthere]

Fix your air flow problem. that a very big oil furnace, so you need a lot of air movement.




PS: Don't make duplicate threads, the other one has been removed.