Description
The Carrier HH79NZ103 is an OEM replacement Thermistor Assembly designed to monitor Outdoor Coil Temperature (OCT) and Outdoor Ambient Temperature (OAT) in compatible Carrier heating and cooling systems. Accurate temperature sensing at the outdoor unit is critical for proper system operation, enabling the control board to make informed decisions about defrost cycles, capacity staging, and overall system efficiency.
Key Features
- OEM Carrier replacement thermistor assembly for reliable, factory-spec performance
- Monitors Outdoor Coil Temperature (OCT) and Outdoor Ambient Temperature (OAT)
- Supports accurate defrost cycle initiation and termination
- Enables precise capacity control and system protection logic
- Direct drop-in replacement for compatible Carrier systems — no modifications required
- Durable construction engineered to withstand outdoor environmental conditions
Application
The HH79NZ103 thermistor assembly is used in Carrier residential and light commercial heat pump and air conditioning systems. The OCT sensor monitors the outdoor coil surface temperature to manage defrost operations, while the OAT sensor provides ambient outdoor air temperature data to the system control board. Together, these inputs help optimize system performance, protect against fault conditions, and extend equipment life.
Why Choose OEM Replacement Parts?
Using genuine Carrier replacement components ensures compatibility with your system’s control board and maintains the accuracy required for proper temperature-based logic. Aftermarket substitutes may introduce sensing errors that lead to nuisance faults, inefficient defrost cycles, or reduced system reliability.
Product Details
- Brand: Carrier
- Part Number: HH79NZ103
- Sensor Type: Thermistor Assembly
- Function: Outdoor Coil Temperature (OCT) / Outdoor Ambient Temperature (OAT)
- Application: Carrier heat pump and air conditioning systems
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