J1 - Miswiring of thermistor (Outdoor Unit)

What does J1 mean?

This error code suggests that one of the thermistors (temperature sensors) in the outdoor unit may be incorrectly wired.

• Incorrect wiring of a thermistor
• Loose connection
• Damaged wiring

Click steps to track your progress.

1. 1

   Turn off power to the unit.

2. 2

   Carefully inspect the wiring for all thermistors in the outdoor unit.

3. 3

   Ensure all connections are secure and wires are not damaged.

4. 4

   Restore power and check if the error code is resolved.

5. 5

   If the issue continues, professional installation verification is needed.