Error 206-C004 — INV2 PBA communication error

What does 206-C004 mean?

A communication error specifically affecting the Inverter 2 Printed Board Assembly (INV2 PBA) within the outdoor unit. This impacts the control and operation of the second inverter compressor.

• Faulty INV2 PBA
• Loose connection to the INV2 PBA
• Damaged wiring to the INV2 PBA
• Inverter compressor 2 malfunction affecting PBA communication

Click steps to track your progress.

1. 1

   Turn off all power to the outdoor unit at the circuit breaker.

2. 2

   CAUTION: This requires a professional. Locate the INV2 PBA and inspect its connectors and wiring for secure fit and any damage.

3. 3

   Ensure that the INV2 PBA is properly seated in its slot.

4. 4

   Power cycle the outdoor unit after checking connections.

5. 5

   If the error persists, the INV2 PBA may be faulty and require replacement by a qualified HVAC technician.