Yellow ALERT LED 2 flashes — System pressure trip or compressor overload

What does ALERT LED 2 flashes Yellow mean?

The system's discharge pressure is out of limits, or the compressor has overloaded. This is a LOCKOUT condition.

• High head pressure.
• Poor condenser coil air circulation (dirty, blocked, or damaged).
• Condenser fan is not running.
• Low pressure switch is open (if applicable).

Click steps to track your progress.

1. 1

   Turn off unit power supply and install a lockout tag.

2. 2

   Check for high head pressure readings.

3. 3

   Clean the condenser coil if it is dirty or blocked.

4. 4

   Verify the condenser fan motor is operating correctly.

5. 5

   If a low pressure switch is present and open, refer to Flash Code 3 troubleshooting.