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Viessmann 7839612 Ignition Module B2XX/CU3A

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Special Price $85.01 Regular Price $97.76
In stock
SKU
7839612
Viessmann 7839612 Ignition Module B2XX/CU3A is an electronic control part that is installed in compatible boilers and heating HVAC systems to control the burner sequence. It also supplies the ignition electrode with controlled spark timing, the flame presence with flame sensor input, and status or fault codes to the main control board. This module is installed in the burner control compartment, and it coordinates combustion operations. The system provides adequate sequenced ignition and flame monitoring in the normal heating cycles.
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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 Viessmann 7839612 Ignition Module?

Regularly inspect the module for dust, corrosion, or loose wiring. Ensure connectors are secure and free from moisture. Clean the surrounding area to prevent debris interference. Proper maintenance ensures accurate ignition and safe operation.

What are common issues with the Viessmann 7839612 Ignition Module?

  • Failure to ignite the burner.
  • Intermittent spark or weak ignition.
  • Faulty wiring or loose connections.
  • Module overheating or internal faults.

Installation Steps

Step 1: Turn off power and gas supply wait for system to cool.

Step 2: Remove access panel and locate existing ignition module wiring.

Step 3: Disconnect old module carefully and remove mounting screws.

Step 4: Install new ignition module, secure screws, reconnect wiring per diagram.

Step 5: Restore power and gas, then test ignition; check for errors and leaks, stop if abnormal.