The Nordyne KG7TC 080D-35C is an 80,000 BTU upflow gas furnace in the KG7TC series, using the 35-inch cabinet platform shared with the KG7SC 090D-35C at a different BTU output class. The KG7TC 080D-35C uses the Nordyne igniter designated 632693, with the upgraded silicon nitride replacement 632693R being the current OEM recommendation. Technicians searching for nortek heating parts 632693R will find this igniter is the correct replacement for the KG7TC 080D-35C and several other Nordyne upflow models on the same platform. Repair Clinic stocks genuine Nordyne OEM parts for the KG7TC 080D-35C including igniter 632693R, flame sensor, control board, inducer motor, and pressure switch. Browse the Nordyne furnace parts catalog filtered by KG7TC 080D-35C for the complete parts inventory.
KG7TC 080D-35C vs KG7SC 090D-35C: Shared Cabinet, Different Output Class
The KG7TC 080D-35C and KG7SC 090D-35C share the same 35-inch upflow cabinet but differ in BTU output and the components sized for that output. The inducer motor on the 080D is sized for 80,000 BTU combustion gas volume; the 090D uses a larger inducer for 90,000 BTU throughput. Pressure switch calibration also differs by output class. The igniter 632693R, flame sensor, and control board are shared between both models. The Nordyne furnace troubleshooting guide covers the fault code blink system for the KG7TC platform control board, which is the same LED diagnostic system used across the KG7SC series.
Most Replaced Parts on the Nordyne KG7TC 080D-35C
Hot Surface Igniter: 632693 / 632693R
The KG7TC 080D-35C uses the Nordyne igniter 632693, with the silicon nitride upgrade 632693R as the current OEM replacement. The 632693R is more durable than the original carbide element and is backward-compatible with all KG7TC 080D-35C units. Testing resistance across the igniter terminals at room temperature with power off confirms or rules out igniter failure. A reading of infinite ohms means the element is open-circuit and must be replaced.
KG7TC 080D-35C Flame Sensor
After the igniter lights the burner on the KG7TC 080D-35C, the flame sensor confirms sustained combustion by passing a micro-amp signal back to the control board. An oxidized sensor rod causes the furnace to light and then shut off within two to five seconds, repeating until lockout. Annual cleaning with fine steel wool is the most cost-effective maintenance step for the flame sensor on the KG7TC platform.
KG7TC 080D-35C Control Board
The KG7TC 080D-35C control board sequences ignition, monitors all safety switches, and stores the two-digit LED fault code. Reading the blink code before any service action reduces the chance of replacing a working part. The board for the 080D-35C must match the KG7TC platform. The blink codes on KG7TC and KG7SC boards are the same diagnostic system and use the same chart.
Draft Inducer Motor for KG7TC 080D-35C
The KG7TC 080D-35C inducer is sized for 80,000 BTU combustion gas throughput. Bearing failure presents as grinding or squealing during the 30-second pre-purge phase at the beginning of each heating cycle. A bearing that is audible but still functional should be scheduled for replacement before seizure causes an emergency heating failure.
KG7TC 080D-35CPressure Switch
The KG7TC 080D-35C pressure switch is calibrated for the draft produced by the 080D inducer at 80,000 BTU operation. Substituting a switch from the KG7SC 090D-35C would introduce a different trip point. Always inspect the pressure hose and condensate drain tube at the inducer housing before replacing a switch showing a fault code.
Nordyne KG7TC 080D-35C Parts at Repair Clinic
- OEM Nordyne parts for the KG7TC 080D-35C including igniter 632693R, with clear differentiation from the KG7SC 090D-35C where inducer and pressure switch specs differ — Nordyne furnace parts catalog
- KG7TC platform fault code blink charts and wiring diagrams through Nordyne furnace troubleshooting
- Igniter 632693R in stock for same-day dispatch
- 365-day returns on uninstalled parts with no restocking fees
Nordyne KG7TC 080D-35C Furnace Parts FAQ
What igniter fits the Nordyne KG7TC 080D-35C?
The KG7TC 080D-35C uses the Nordyne hot surface igniter catalogued under part 632693 and its silicon nitride replacement variant 632693R. The 632693R is the upgraded silicon nitride version of the original carbide igniter and is significantly more durable. Handle either element only by its ceramic base during installation.
How is the Nordyne KG7TC 080D-35C different from the KG7SC 090D-35C?
The KG7TC 080D-35C delivers 80,000 BTU in the TC series, while the KG7SC 090D-35C delivers 90,000 BTU. Both use the 35-inch cabinet platform. The pressure switch and inducer motor are calibrated to each model’s specific BTU output and must not be cross-substituted between the two models.
How do I read the fault code on the Nordyne KG7TC 080D-35C?
The LED on the KG7TC 080D-35C control board flashes a two-digit blink code. Count the first group of flashes, pause, then count the second group. Match the pattern to the fault code chart printed on the sticker inside the blower compartment door.
My KG7TC 080D-35C heats briefly then shuts off after about 30 seconds. What should I check first?
A furnace that ignites and shuts off within 30 seconds of combustion is showing the classic flame sensor symptom. The sensor’s micro-amp current has dropped below the control board’s detection threshold. Clean the sensor rod lightly with fine steel wool and test the furnace. Replace the rod if the symptom recurs.
