84 — Refrigerant shortage trouble

What does 84 mean?

This error indicates that the air conditioning system has detected a shortage of refrigerant. This condition can severely impact performance and lead to system damage.

• Refrigerant leak in the system piping or components.
• Incorrect refrigerant charge during initial installation or servicing.

Click steps to track your progress.

1. 1

   Visually inspect refrigerant lines and connections, particularly at flare joints, for any signs of oil residue which can indicate a leak.

2. 2

   Ensure all piping connections are secure and have been correctly flared and tightened according to specifications.

3. 3

   Check that the outdoor unit and indoor units are properly isolated from vibrations that could stress refrigerant lines.

4. 4

   If the problem continues, a certified technician must locate and repair the leak, then recharge the system.