Technicians favor the Celsius scale display for its accuracy and the intuitive "Press for Setpoint" feature

For technicians servicing residential or light commercial units

loud bearing noise

Mechanical failure is usually driven by a detached or unbalanced blower wheel impacting the internal walls

IO Hvac Controls ZPA-OTS Sensor 319852-301 Technicians favor the Celsius scaleThe iO HVAC Controls ZPA OTS is a critical NTC Type III thermistor designed for precise ambient monitoring and balance point control in residential and light commercial zoning systems. Rated at 10K Ohms @ 77 F, this sensor integrates directly with the iO HVAC ZP3 HPS ESP, ZP4 ESP, and ZP6 ESP zoning panels. By detecting real time outdoor conditions, it allows contractors to set specific high and low balance points, managing when a system should lock