Keep your Nordyne FG6RC 100C-16B furnace running reliably with genuine OEM replacement parts from Repair Clinic. The FG6RC 100C-16B is a 100,000 BTU downflow gas furnace for manufactured home installations and the highest-output configuration in the FG6RC downflow series on the 16-inch cabinet platform. The FG6RC 100C-16B and KG6RC 100C-16B are the same furnace under different Nordyne brand channel designations, with all service parts fully interchangeable. At 100,000 BTU this model cycles aggressively in cold weather, placing higher thermal stress on the igniter and more annual hours on the inducer bearing than lower-output siblings. Repair Clinic stocks genuine Nordyne OEM parts for the FG6RC 100C-16B including the Nordyne igniter parts, Nordyne flame sensor parts, Nordyne draft inducer motor parts, Nordyne control board parts, and Nordyne blower motor parts. Browse the Nordyne furnace parts catalog filtered by FG6RC 100C-16B for the complete parts inventory.
FG6RC 100C-16B vs FG6RC 080C-16B: Same 16-Inch Downflow Cabinet, Different Output Classes
The Nordyne FG6RC 100C-16B at 100,000 BTU and FG6RC 080C-16B at 80,000 BTU share the same 16-inch downflow cabinet platform but use inducer motors and pressure switches sized for their respective output classes. The 100C-class inducer must not be substituted with an 080C-class unit. In the downflow orientation the inducer sits near the top of the cabinet where moisture from combustion gases accumulates and accelerates bearing wear faster than in upflow installations. The Nordyne furnace troubleshooting guide covers fault code blink patterns for the FG6RC platform control board.
Most Replaced Parts on the Nordyne FG6RC 100C-16B
Igniter for the Nordyne FG6RC 100C-16B
At 100,000 BTU the FG6RC 100C-16B cycles aggressively in cold weather, accumulating igniter thermal cycles at a higher rate per season than lower-output 080C siblings. Testing resistance at room temperature with power off confirms failure in under two minutes. An infinite ohm reading means the element must be replaced before any heating cycle can complete.
FG6RC 100C-16B Flame Sensor
A furnace that ignites and shuts off within two to five seconds, repeating until lockout, is showing the flame sensor symptom. Annual cleaning with fine steel wool extends sensor service life and prevents most early-season nuisance lockouts on the FG6RC downflow platform.
Draft Inducer for the Nordyne FG6RC 100C-16B
The 100,000 BTU-class inducer must not be substituted with an 080C-class inducer from the lower-output sibling on the same cabinet. Moisture in the downflow housing accelerates bearing wear at a faster rate than in upflow furnaces. A grinding sound at startup warrants immediate replacement before complete bearing seizure creates a heating emergency.
Control Board for the FG6RC 100C-16B
The FG6RC 100C-16B control board is programmed for the downflow orientation and must not be substituted with a board from an upflow Nordyne model. Read and document the LED blink code before ordering any replacement component.
Why Choose Repair Clinic for Nordyne FG6RC 100C-16B Parts
- Genuine Nordyne OEM Components: 100,000 BTU-class igniters, inducers, and control boards confirmed for the FG6RC 100C-16B and equivalent KG6RC 100C-16B designation Nordyne furnace parts.
- 100C vs 080C Output Differentiation: Inducer and pressure switch components are catalogued separately for the 100C and 080C output classes to prevent cross-substitution between the two configurations.
- FG6RC and KG6RC Cross-Reference: Parts for both Nordyne brand channel designations at the same output class are catalogued together with interchangeability confirmed through Nordyne furnace troubleshooting.
- 365-Day Returns: Return any uninstalled Nordyne part within a full year of purchase with no restocking fees.
Nordyne FG6RC 100C-16B Furnace Parts FAQ
What BTU output does the Nordyne FG6RC 100C-16B produce?
The FG6RC 100C-16B delivers 100,000 BTU input in the downflow configuration for manufactured home installations. It is the highest-output model in the FG6RC downflow series on the 16-inch cabinet platform, above the 080C-16B at 80,000 BTU.
Is the Nordyne FG6RC 100C-16B the same as the KG6RC 100C-16B?
The FG6RC 100C-16B and KG6RC 100C-16B are the same furnace under different Nordyne brand channel designations. Service parts are fully interchangeable between both designations at the same BTU output class.
My FG6RC 100C-16B inducer grinds at startup. What should I do?
Grinding at inducer startup on any downflow furnace is almost always bearing failure caused by moisture condensation accumulating near the inducer housing in the downflow orientation. Replace the complete inducer assembly promptly before the bearing seizes and leaves the home without heat.
How do I read the fault code on the Nordyne FG6RC 100C-16B?
The FG6RC 100C-16B control board LED flashes a blink code identifying the most recent fault. Count the flashes, note the pause between groups, and match the pattern to the fault code chart on the sticker inside the blower compartment door.
