Description
The AC Temperature Sensor Thermistor Probe is an essential electronic component used in residential split-system, window, and light commercial air conditioners. Encapsulated in a durable black epoxy resin bead, the internal NTC thermistor changes its electrical resistance relative to ambient temperature variations. This resistance signal is transmitted along the flexible insulated cable to the indoor unit’s main control PCB, enabling accurate temperature monitoring, automatic cooling control, and defrost cycle management.
Technical Specifications
| Specification | Details |
| Product Name | AC Temperature Sensor Thermistor Probe |
| Sensor Type | NTC (Negative Temperature Coefficient) Thermistor |
| Probe Head Material | Black Epoxy Resin Sealed Bead |
| Cable Material | Flexible Insulated 2-Core Lead Wire |
| Termination | Bare Lead / Optional 2-Pin Plug Terminal |
| Operating Temperature Range | -20°C to +105°C |
| Application | Air Conditioner Room / Ambient Air Temperature Sensing |
| Product Condition | New |
Key Features
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Epoxy-Sealed Sensor Head: Provides moisture-resistant sealing, fast thermal response, and mechanical protection.
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High-Precision NTC Element: Delivers reliable resistance-to-temperature conversion for tight climate control.
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Flexible Lead Wire: Insulated 2-core black cable allows clean routing around coil fins and internal casings.
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Durable Construction: Built to withstand continuous internal cabinet moisture and thermal cycling.
Supported Applications
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Indoor Unit Room Air Sensing: Monitors ambient air temperature returning to the indoor evaporator coil.
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Universal Control Board Assemblies: Compatible with universal split AC control boards and OEM PCB boards.
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Domestic Appliance Servicing: Used in refrigerators, dehumidifiers, and environmental temperature control circuits.
Benefits
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Restores accurate temperature regulation and prevents compressor over-cycling caused by faulty sensors.
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Waterproof epoxy head resists condensation and cabinet humidity.
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Simplifies field service repairs with flexible wiring and straightforward board connectivity.
Package Includes
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1 x AC Temperature Sensor Thermistor Probe with Lead Cable Assembly
Important Buyer Verification Notes
Notice for Technicians & Contractors: Confirm the resistance rating (e.g., 5K, 10K, or 15K @ 25°C) required by your control board prior to installation. Verify whether your target PCB header requires a pre-attached terminal connector or direct lead soldering.
Why Buy From Al Ramiz
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Genuine Quality Parts: Field-tested HVAC sensors, control boards, and electronic accessories.
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UAE Stock & Local Inventory: Fast processing and local dispatch across the UAE.
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Technical Support: Expert guidance for AC sensor diagnosis and replacement selection.
Frequently Asked Questions (FAQs)
What is the primary function of an epoxy head NTC sensor probe in an air conditioner?
It detects ambient room air temperature entering the indoor unit and sends electrical feedback to the control board to start or stop cooling cycles.
Can this sensor probe be used on any split AC control board?
Yes, provided the resistance rating (such as 5K, 10K, or 15K) and connection style match the requirements of the control board.
How do I know if my AC temperature sensor needs replacement?
Common signs include the AC running continuously without shutting off, inaccurate room temperature readings, or sensor error codes displayed on the indoor unit panel.
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