Technicians should look for a humming motor with no shaft movement

Replacing it with an OEM Carrier wheel typically resolves these mechanical noise issues

Compatible Refrigerants: Engineered for use with R-410A

measuring 7 1/3" x 1/2" x 7 1/4"

soot accumulation on the burner

Reznor 272743 Flame Sensor 322056-301 Technicians should look for aThe Reznor 272743 Flame Sensor is a critical safety component designed for precise rectification in Reznor unit heaters and power vented systems. This genuine Reznor OEM part is engineered to withstand the high temperature environment of the combustion chamber, ensuring consistent flame signal detection for the ignition control board. As a veteran technician knows, a fouled or degraded sensor is a primary cause of short cycling and nuisance lockouts.