Code 25 — Invalid model plug

What does 25 mean?

The system has detected an incorrect or incompatible model plug in the outdoor unit. This prevents the unit from operating.

• Incorrect model plug installed
• Damaged model plug
• Improperly seated model plug

Click steps to track your progress.

1. 1

   Ensure the correct model plug is installed for the outdoor unit.

2. 2

   Check that the model plug is securely inserted.

3. 3

   Inspect the model plug for any physical damage.

4. 4

   Contact an HVAC technician if the plug needs replacement.