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Bosch Hvac 8733953202 Indoor Unit Main Control Board

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Special Price $86.72 Regular Price $99.73
In stock
SKU
8733953202
The Bosch HVAC 8733953202 Indoor Unit Main Control Board is an electronic component that coordinates the operations of a unit in the HVAC systems, such as the fan operation, sensor input processing, and mode selection. It reads the signals of thermostats and sensors, controls communication between parts, and activates outputs to blowers, valves, and circuits. Fitted either in the air handler or indoor cabinet of compatible residential and light commercial systems, this control board acts as the central logic point that coordinates and provides the correct sequence of operation of heating, cooling, and airflow operations.
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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 Bosch HVAC 8733953202 Main Control Board?

Inspect the control board periodically for loose connectors, corrosion, or signs of overheating. Use compressed air to remove dust and debris from the board area. Proper maintenance helps prevent communication errors and electrical faults. Always disconnect power before servicing.

What are common issues with the Bosch HVAC 8733953202 Main Control Board?

  • Faulty or burned circuitry.
  • Corroded or loose wire connections.
  • Unexpected system shutdowns or error indications.
  • Communication failures with sensors or actuators.
  • Irregular operation or random resets.

Installation Steps

Step 1: Turn off power to the HVAC system and allow the unit to discharge.

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

Step 3: Disconnect all wiring and remove mounting screws from the old board.

Step 4: Install the new control board, aligning it with mounting points.

Step 5: Reconnect all wiring exactly as labeled or per schematic.

Step 6: Replace the access panel, restore power, and test system operation.