this 48 NEMA frame size constant-torque motor uses a programmed internal motor control module to maintain CFM across varying static pressures

the issue may lie with the unit’s internal control board or the IR sensor itself

Stable Electrical Characteristics: Optimized for 60Hz operation to minimize inductive heating and reduce the risk of premature failure in high-ambient-temperature racks

including those requiring common wire (C-terminal) integration for continuous power

IO Hvac Controls UT32 Thermostat 320735-701 this 48 NEMA frame sizeThe iO HVAC Controls UT32 Titan is a heavy duty, universal touchscreen thermostat designed for high performance residential and light commercial HVAC system applications. As a veteran preferred 3H 2C heat pump thermostat, the UT32 offers exceptional versatility, supporting up to three heating and two cooling stages for dual fuel, gas, electric, and heat pump configurations. Its robust design allows for either 24VAC hardwired or battery powered