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Nordyne 1045845R Defrost Control Board

Rating:
5 5 4
4  Reviews Add Your Review
Special Price $163.58 Regular Price $188.12
In stock
SKU
1045845R
The Nordyne 1045845R Defrost Control Board is an electronic control assembly used in compatible heat pump equipment to manage the defrost cycle during low-temperature operation. It monitors system conditions and triggers defrost actions when frost buildup is detected on outdoor coil sections allowing normal heat transfer to resume. This board is commonly used in applications where heat pumps operate in colder conditions requiring periodic defrost regulation. Within HVAC systems, it coordinates defrost timing and switching sequences in heat pump units, maintaining stable operation during heating cycles in winter conditions.
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HVAC Controls & Electrical, Control Boards & Modules
Manufacturer:
https://www.partshnc.com/media/catalog/product/1/0/1045845r_1.jpg

Specifications

  • Type: Defrost Board
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    Product Questions (2)
    Customer Questions
    What maintenance is required for the Nordyne 1045845R Defrost Control Board?

    Inspect the control board periodically for dust buildup, loose wiring, or signs of overheating. Ensure all electrical connections are secure and corrosion-free to maintain proper defrost cycle operation. Always disconnect power before servicing to prevent electrical shock and damage.

    What are common issues with the Nordyne 1045845R Defrost Control Board?

    • Failure to initiate defrost cycles.
    • Burnt or damaged components.
    • Loose or corroded electrical connections.
    • Intermittent system operation.

    Installation Steps

    Step1: Turn off power to the unit at the breaker and confirm it is fully disconnected.

    Step2: Remove the access panel and label or document all existing wire connections.

    Step3: Disconnect the wires and remove the old control board from its mounting bracket.

    Step4: Mount the new board securely and reconnect all wires to the correct terminals.

    Step5: Reinstall the panel, restore power, and test the defrost cycle for proper operation.