2 red flashes, 9 green flashes — Compressor over-current

What does 29 mean?

The compressor is drawing too much electrical current. The system tries to reduce the current, but if it stays too high, the outdoor unit will stop. This can happen during startup and may lead to a system lockout if it occurs frequently.

• Compressor phase current is too high
• System attempting to start
• Outdoor unit control issue

Click steps to track your progress.

1. 1

   Ensure software on the outdoor control is updated to version 1.27 or later.

2. 2

   If software cannot be updated, replace the Lennox outdoor control with a newer version.

3. 3

   Disconnect power to both indoor and outdoor units, then reconnect and restart the system.