OEM Carrier Control Board for UPFLOW100U3619A

This integrated furnace control board is the command center of your Carrier UPFLOW100U3619A. It proves the pressure switch, drives the inducer motor, sequences the hot-surface igniter and gas valve, monitors the flame-sense rod, and times the blower's heat and cool delays while enforcing every safety limit. When it fails, the furnace stops cycling normally — you may get no inducer startup, no ignition, repeated safety lockouts, a blower that won't shut off, or a diagnostic LED flashing a fault code. Homeowners most often see no heat on a clear thermostat call or a unit that lights briefly then drops out. Specs: OEM board with the original relay complement (inducer, gas valve, heat/cool blower speeds, EAC and humidifier outputs), factory-matched firmware, the correct flame-sense circuit, and an onboard diagnostic LED. Relay ratings and ignition timing are specific to this Carrier furnace series. Why OEM matters: aftermarket boards commonly fit lower-rated relays that arc and weld under gas-valve and blower inrush, and rebuilt units may run generic timing firmware. Both lead to early failure, blower mis-timing, and flame-proof faults. The OEM board guarantees proper relay ratings, ignition sequence timing, and safety logic so the furnace runs as designed. Install difficulty: 3/5. Tools: 1/4" nut driver, multimeter, and a camera to photograph the wiring before removal. #1 safety warning: TURN OFF THE BREAKER to the furnace before touching the board — line voltage is present on its terminals. Label each wire and restore every connector to its exact position. Ships same business day from our stocked warehouse on orders before 3 PM CST. Backed by a 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.

Compatibility

This part is compatible with Carrier model UPFLOW100U3619A. Always verify the part number against your unit's data plate before ordering.

Why Choose OEM?

OEM parts are manufactured to the exact factory specifications for your unit. Generic aftermarket alternatives may fit physically but often use lower-rated components that reduce equipment life and void manufacturer warranties. When the cost difference between OEM and generic is $10-30, the OEM part is always the smarter investment on a system worth $5,000-$15,000.

Shipping & Returns

Same-day shipping on orders before 3 PM CST. Standard delivery 2-5 business days, express options available at checkout. 30-day hassle-free returns on uninstalled parts — free return shipping included. 1-year OEM factory warranty coverage.