SKU: 37040009372

MRCOOL Mini Split Thermistor (Temp Sensor) for A-09-HP-WMAH-230B Air Handler | OEM Replacement

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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28

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Description

MRCOOL Mini Split Thermistor (Temp Sensor) for A-09-HP-WMAH-230B Air Handler | OEM ReplacementFix inaccurate temperature readings, restore proper cooling and heating, and eliminate common mini split issues with this genuine MRCOOL thermistor (temperature sensor). This OEM thermistor is designed for use in select MRCOOL wall mounted mini split air handlers and plays a critical role in system performance. It continuously monitors temperature and sends data to the control board, allowing your system to adjust compressor operation, fan speed, and

Fix inaccurate temperature readings, restore proper cooling and heating, and eliminate common mini split issues with this genuine MRCOOL thermistor (temperature sensor).

This OEM thermistor is designed for use in select MRCOOL wall-mounted mini split air handlers and plays a critical role in system performance. It continuously monitors temperature and sends data to the control board, allowing your system to adjust compressor operation, fan speed, and defrost cycles accurately.

If your mini split is not maintaining temperature, short cycling, freezing up, or displaying error codes, a faulty thermistor is one of the most common causes.

Common Problems This Thermistor Fixes:

  • Mini split not cooling properly or blowing warm air
  • Mini split not heating correctly
  • Incorrect room temperature readings
  • Evaporator coil freezing or icing up
  • System short cycling (turning on and off repeatedly)
  • Error codes related to temperature sensors
  • Fan not operating as expected

Key Features:

  • Genuine MRCOOL OEM replacement part
  • Designed for accurate temperature sensing and system control
  • Direct replacement for factory-installed thermistor
  • Helps restore efficiency and proper operation
  • Plug-and-play connection (model dependent)

Compatible Model (Guaranteed Fit):

  • A-09-HP-WMAH-2308 Wall-Mounted Mini Split Air Handler

Part Number: 11201007003447

⚠️ Important Fitment Notice:

This thermistor is guaranteed to fit the model listed above. It may be compatible with other MRCOOL mini split systems or similar brands, but compatibility is not guaranteed unless specifically listed.

If your model is not listed, contact us before ordering and we will help verify fitment.

What Is a Thermistor?

A thermistor is a temperature sensor used by your mini split system to monitor air and coil temperatures. When it fails, the system may behave unpredictably, including poor cooling performance, incorrect temperature control, or shutdown errors.

Additional Notes:

  • Stock images may be used for this listing
  • Professional installation recommended
  • Always match part numbers when replacing HVAC components

Restore your mini split’s performance and avoid unnecessary system replacement—replace the thermistor and get your system running like it should.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 37040009372

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This is hands down the best sublimation paper I’ve used and the only one I continue to buy. I get a perfect transfer every single time—no fracturing, no fading, and no uneven results. The paper dries fast, which makes my workflow so much smoother, especially when I’m producing items in batches. I use this regularly to make air fresheners and tote bags for my small business, and the color payoff is always vibrant and crisp. The transfer rate is excellent, and it works beautifully on light-colored, high-quality polyester and other sublimation-ready surfaces. If you’re a small business owner or crafter who values consistency, quality, and ease of use, this paper is absolutely worth it. I highly recommend it and will continue to repurchase.
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I’ve been using A-Sub paper for my sublimation projects, and it is easily one of the best. The ink dries almost instantly once printed, so I don’t have to worry about smudging the design or getting those annoying "pizza wheel" marks from the printer rollers. The paper itself feels substantial and doesn't tear or curl easily. One of the biggest wins for me is that it never jams; it feeds through perfectly every time, saving me the frustration of wasting expensive ink and paper. When I go to press my designs, the ink releases almost completely, leaving very little behind on the paper and putting all that color onto the project. The final results look super professional, with colors that are vibrant and sharp rather than looking faded or dull. It has worked perfectly for everything I’ve tried so far, and if you want a reliable paper that gives you consistent, high-quality results, this is definitely the one to get.
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