INTGR FURNACE CONTROL BOARD

What it is

• Brand: Rheem / Ruud (ProTech OEM control)
• Type: Integrated Furnace Control Board (IFC)
• Function:
  • controls ignition sequence (spark ignition)
  • manages gas valve operation
  • controls blower fan timing
  • monitors safety switches (pressure, limit, rollout inputs)

Key specs

• Voltage: 24V control system
• Application: gas furnaces (Rheem/Ruud series)
• Includes:
  • onboard diagnostics LED
  • fuse protection (typically 3A ATC fuse)
• Mounting: OEM furnace cabinet board

System role (simple view)

This is the “brain” of the furnace, unlike the parts you’ve been listing like:

• relays (90340 / 90380)
• limit switches (SHL / AT series)
• hard start kits (96503 / 96506)

Bottom line

• ✔ Real OEM furnace control board
• ✔ Stable UPC: 662766517798
• ✔ Model-specific (must match furnace series exactly)
• ❌ Not universal or cross-usable like relays or thermostats