AC Indoor Temperature Sensor Thermistor – HVAC Sensor with Wire

Description

The AC Indoor Temperature Sensor Thermistor – HVAC Sensor with Wire provides complete, dual-point thermal monitoring for wall-mounted split air conditioner indoor units. Sourced and synthesized from leading component technical specs, this dual-function assembly combines two distinct NTC thermistors into a single insulated wiring harness:

1. Black Epoxy Resin Bead Probe: Positioned near the return air grille, this moisture-sealed probe measures ambient room air temperature to control compressor cycles.

2. Copper Cylinder Shell Probe: Clamped directly onto the copper evaporator coil tube, this fast-conduction probe monitors coil temperature to prevent system freeze-ups and control defrost cycles.

Both sensors feed continuous electrical resistance signals back to the indoor mainboard via a single multi-pin PCB socket connection.

Technical Specifications

Key Features

• Dual-Point Thermal Monitoring: Integrates ambient room air sensing and copper evaporator pipe sensing into a single pre-wired assembly.

• High Thermal Conductivity: Solid copper cylinder probe provides instant response to coil temperature fluctuations and ice buildup.

• Epoxy-Sealed Ambient Bead: Moisture-proof black epoxy coating protects the room air thermistor against continuous indoor unit condensation.

• Pre-Bound Harness: Zip-tied dual wires keep the harness neat and prevent line snagging during installation inside tight blower cabinets.

• Plug-and-Play Integration: Terminated with a multi-pin plug for quick, direct connection to standard split AC control boards.

Supported Applications

• Wall-Mounted Split AC Indoor Units: Primary replacement sensor assembly for residential and commercial split systems.

• Universal Control Boards: Fully compatible with universal indoor AC replacement PCB assemblies.

• Evaporator Protection: Prevents coil icing and regulates system defrost cycles during operation.

Benefits

• Eliminates guesswork by replacing both room air and coil sensor probes simultaneously.

• Solves common AC fault codes related to sensor resistance drift, frequent compressor short-cycling, or evaporator freeze-ups.

• Heavy-duty insulated wire and sealed heads withstand high humidity and thermal cycling inside evaporator housings.

Package Includes

• 1 x AC Indoor Temperature Sensor Thermistor – HVAC Sensor with Wire (Epoxy Bead + Copper Cylinder Probe with Lead Wire Assembly)

Important Buyer Verification Notes

Notice for Technicians & Contractors: Always test board compatibility by verifying the resistance values (e.g., 5K, 10K, or 15K @ 25°C) and pin-out configuration of your indoor unit’s PCB socket before installation. Slide the copper probe securely into the factory clip located on the evaporator coil return bend.

Why Buy From Al Ramiz

• Genuine Quality Parts: Field-tested HVAC control board sensors and electronic spares.

• UAE Stock & Local Inventory: Fast processing and local dispatch across the UAE.

• Technical Support: Expert guidance for split AC sensor selection and board compatibility.

Frequently Asked Questions (FAQs)

Why are there two different probe tips on this wire assembly?

The black epoxy bead senses room air temperature, while the copper cylinder probe clips onto the evaporator pipe to monitor coil temperature and prevent freezing.

How do I determine if my existing sensor assembly is failing?

Faulty dual sensors typically cause the AC unit to shut off unexpectedly, display sensor error codes, fail to cool properly, or allow the indoor coil to ice over.

Will this plug directly into universal split AC replacement mainboards?

Yes, provided the resistance rating matches and the PCB socket accommodates the white terminal plug.