6602 (A2) Transmission processor hardware error

What does 6602 (A2) mean?

This fault suggests an issue with the transmission processor hardware, often due to data collisions during wiring changes or polarity changes while the power is on. It can also be caused by a faulty transmission circuit or noise interference.

• Transmitting data collision due to wiring work or polarity change performed while power is ON.
• Malfunction of transmitting circuit on transmission processor.
• Noise interference on indoor/outdoor connectors.

Click steps to track your progress.

1. 1

   Ensure all power to the indoor/outdoor unit, Fresh Master, or Lossnay is turned OFF before performing any wiring work or polarity changes.

2. 2

   Check all indoor/outdoor connectors for secure fit and signs of damage.

3. 3

   Turn off the system power for at least 5 minutes, then restore it to attempt a reset.

4. 4

   Consider potential sources of electromagnetic noise near the unit's wiring.

5. 5

   If the error continues, professional inspection of the transmission processor's circuit is recommended.