Description
The Fujitsu 9900991005 is an OEM pipe thermostat (thermistor) engineered specifically for use with Fujitsu AGU9 and 15RLF series mini-split air handling units. Designed as a direct factory replacement, this component monitors refrigerant pipe temperatures to protect the system from operating outside safe parameters — helping prevent frost buildup, compressor damage, and inefficient operation.
Key Features
- OEM Fujitsu replacement pipe thermostat/thermistor
- Designed for compatibility with Fujitsu AGU9 and 15RLF series mini-split indoor units
- Monitors refrigerant line temperatures for accurate system protection and control
- Helps prevent frost accumulation and compressor overload conditions
- Direct drop-in replacement for fast, straightforward installation
- Manufactured to Fujitsu factory specifications for reliable, long-term performance
Application
This pipe thermostat is a critical sensing component within the Fujitsu mini-split system’s control circuit. It communicates pipe temperature data to the indoor unit’s control board, enabling the system to regulate defrost cycles and protect refrigerant circuit integrity. Using a genuine Fujitsu OEM part ensures compatibility and maintains the performance standards of your equipment.
Product Details
- Brand: Fujitsu
- Part Number: 9900991005
- Compatible Models: AGU9, 15RLF series mini-split indoor units
- Type: Pipe Thermostat / Thermistor
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