Fujitsu 9900492014 Heat Outlet Thermistor Hfi

Product Description

The FUJITSU 9900492014 is a heat outlet thermistor designed for use in HFI series mini-split and multi-split HVAC systems. This sensor monitors discharge air temperature at the heat outlet, providing critical feedback to the control board to regulate system operation and protect against overtemperature faults. Proper thermistor function is essential for accurate capacity control and system efficiency. This part is installed by licensed HVAC technicians as part of routine sensor replacement or fault-code diagnosis on Fujitsu ductless systems.

This thermistor is intended for HFI series Fujitsu heat pump and cooling systems. It is typically replaced when the system logs a thermistor-related fault code, when temperature readings are erratic, or when physical damage to the sensor or its harness is found during inspection. This component is an OEM-specification replacement for Fujitsu ductless equipment.

Key Features

• Monitors heat outlet air temperature to protect system from overtemperature conditions
• Provides temperature feedback to the control board for capacity regulation
• OEM part number 9900492014 ensures direct-fit replacement
• Designed for HFI series Fujitsu mini-split and multi-split systems

Compatibility

Designed as an OEM-style replacement thermistor for Fujitsu HFI series ductless mini-split and multi-split heat pump systems. Verify compatibility against the specific model and wiring harness connector before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect power to the indoor unit at the breaker before removing or installing any sensors or electrical components. Confirm the replacement thermistor connector type matches the existing harness before installing. Refer to the unit service manual for sensor resistance specifications and fault code diagnosis procedures.