Shop replacement repair parts for Nordyne Furnace model FG6RA 072C-12A

120v to 24v 40va transformer

Orfice #43 h

Arm, motor mount-11"b.c., repl

Heat exchanger

Ignitor bracket
Get reliable heating from your Nordyne FG6RA 072C-12A downflow manufactured home furnace with genuine OEM replacement parts from Repair Clinic. The FG6RA 072C-12A is a 72,000 BTU downflow gas furnace for manufactured and mobile home installations, the mid-range member of the FG6RA downflow series between the 060C and 096C variants; the 072C-12A indicates 72,000 BTU input in a 12-inch wide cabinet. The FG6RA 072C-12A was also sold as a Frigidaire-branded furnace on the same Nordyne platform with interchangeable service parts. In the downflow configuration, the furnace delivers heated air downward into the subfloor duct system using an inducer and pressure switch calibrated specifically for 72,000 BTU throughput in the 12-inch cabinet. Parts most frequently replaced include the hot surface igniter, flame sensor, control board, inducer motor, and pressure switch. Browse the full Nordyne furnace parts catalog.
The FG6RA 072C-12A sits between the smaller 060C and the larger 096C-16B in the FG6RA downflow series. At 72,000 BTU the 072C uses an inducer motor and pressure switch calibrated for its specific output class; these components differ from both the 060C and 096C variants and must not be cross-substituted. Like all FG6RA models, the 072C-12A was also sold under the Frigidaire brand on the same Nordyne platform. The control board is programmed for the downflow orientation and must not be substituted with an upflow Nordyne board. For diagnostic guidance, visit the Nordyne furnace troubleshooting section.
The igniter is positioned in the burner box at the top of the downflow cabinet, accessible after removing the upper access panel with power and gas disconnected. The silicon nitride element should test between 40 and 90 ohms when cold; an infinite resistance reading confirms an open-circuit failure that must be replaced. Browse Nordyne furnace igniter parts.
A furnace that ignites and shuts off within two to five seconds, repeating before locking out, is showing the classic flame sensor symptom. Annual light cleaning of the sensor rod with fine steel wool is the most cost-effective preventive step. Browse Nordyne furnace flame sensor parts.
The control board is programmed for the downflow orientation and must not be substituted with an upflow Nordyne board. Read and document the LED blink pattern before ordering any replacement; the fault code chart is on the blower compartment door interior. Browse Nordyne furnace control board parts.
In the downflow configuration the inducer draws combustion gases upward through the 072C-12A heat exchanger. Moisture accumulation near the inducer housing accelerates bearing wear in the downflow orientation; a grinding sound at startup should be addressed proactively. Browse Nordyne furnace inducer motor parts.
The pressure switch is calibrated for the draft characteristics of the 72,000 BTU downflow heat exchanger; it differs from the 060C and 096C variants and must not be cross-substituted. A blocked pressure hose accounts for most pressure switch faults on this platform and should always be inspected before the switch is replaced.
The FG6RA 072C-12A delivers 72,000 BTU in a 12-inch cabinet, while the FG6RA 096C-16B delivers 96,000 BTU in a 16-inch cabinet. The higher-output 096C model uses a larger inducer motor and pressure switch calibrated for its greater combustion gas volume; these components must not be cross-substituted between the two output classes.
On the FG6RA 072C-12A, pressure switch faults with a normal-sounding inducer are most often caused by a kinked pressure hose behind displaced insulation, a cracked hose, or a blocked condensate drain tube at the inducer housing. Inspect the full hose length before replacing the switch; a clear, intact hose with a switch that still reads open at normal operating draft confirms a failed switch diaphragm.
The FG6RA and FG6RC are different product lines at different BTU configurations. The FG6RA 072C-12A uses components sized for 72,000 BTU; the FG6RC series covers different output classes. Always confirm the specific part number from the installed component label before ordering to verify compatibility rather than assuming cross-series interchangeability.
A furnace that lights and shuts off within two to five seconds is showing the classic flame sensor symptom; the sensor’s micro-amp current has dropped below the control board detection threshold. Clean the sensor rod lightly with fine steel wool and test; replace the rod if the symptom recurs within the same heating season after cleaning.

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