1. Locate your furnace's owner's manual. It should have come with your furnace when it was installed, or you may be able to download it from the manufacturer's website.
2. Look for a section titled "Wiring Diagram" or "Schematic." This section should contain a diagram that shows the electrical connections for your furnace.
3. If you cannot find a schematic in your owner's manual, contact the furnace manufacturer directly and request a copy.
Option 2: Search Online
1. Use a search engine such as Google or Bing to search for your furnace model number and the term "schematic."
2. You may also be able to find schematics for your furnace on websites such as ManualsLib, FurnacePartsDirect, and RepairClinic.
3. Be sure to download the schematic that corresponds to your specific model number.
4. If you cannot find a schematic for your furnace online, contact the furnace manufacturer directly and request a copy.
Option 3: Contact the Furnace Manufacturer
1. If you are still unable to locate a schematic for your furnace, contact the furnace manufacturer directly.
2. Provide the manufacturer with your furnace's model number, serial number, and date of manufacture.
3. The manufacturer may be able to provide you with a schematic or provide you with a contact for a local HVAC professional who can assist you.
