Furnace: Oil + ignition OK but no flame
Oil + ignition OK but no flame on a furnace: Possible causes and checks for: oil + ignition ok but no flame.
Common causes of oil + ignition ok but no flame
- Clogged nozzle/strainer, loose nozzle, pressure low, oil too heavy/cold (wrong grade), excess air or draft, electrodes wrong
If the unit shows an error code, look it up: AirQuest Furnace codes Carrier Furnace codes Daikin Furnace codes Goodman Furnace codes ICP Furnace codes KeepRite Furnace codes Lennox Furnace codes Midea Furnace codes Rheem Furnace codes Trane Furnace codes York Furnace codes
Source: General HVAC service practice — verify per model. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.