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Trane CNT08175 Defrost Control Board

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Special Price $94.68 Regular Price $131.95
In stock
SKU
CNT08175
The Trane CNT08175 Defrost Control Board manages defrost cycle operation within residential and commercial HVAC systems. Positioned inside compatible heat pump and outdoor unit control assemblies, the board monitors system conditions and coordinates defrost functions to prevent frost accumulation on outdoor coils during heating operations. Its circuitry communicates with connected sensors, relays, and control components to support proper equipment sequencing and temperature management. Mounted within designated electrical control compartments, the component assists with regulated defrost timing, balanced heating performance, and smooth heat pumps.
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HVAC Controls & Electrical, Control Boards & Modules
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Product Questions (2)
Customer Questions
What maintenance is required for the Trane CNT08175 Defrost Control Board?

Regularly inspect the board for dust, moisture, or corrosion. Ensure all wiring connections are secure and free from debris. Handle carefully to avoid static discharge. Proper maintenance ensures accurate defrost cycles and prevents system faults.

What are common issues with the Trane CNT08175 Defrost Control Board?

  • Defrost cycles not initiating properly.
  • Erratic or premature defrost operation.
  • Component failure due to overheating.
  • Intermittent signal issues causing cycle inconsistencies.

Installation Steps

Step 1: Turn off and lock out power to the HVAC or refrigeration system.

Step 2: Remove the access panel to locate the existing defrost control board.

Step 3: Disconnect all wiring, labeling connections for accurate reinstallation.

Step 4: Unscrew and remove the old board from its mounting location.

Step 5: Install the new control board securely in the original position.

Step 6: Reconnect all wires, restore power, and test the system to confirm proper defrost cycles.