Code 84 — High Pressure Lockout (4 hrs)

Was bedeutet 84 ?

The system has locked out due to high pressure in the refrigerant system. This may indicate an issue with airflow or overcharging. Lockout lasts 4 hours.

• High refrigerant charge
• Blocked airflow (indoor or outdoor)
• Faulty high-pressure switch
• System operating in extreme heat

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1. 1

   Ensure indoor and outdoor unit coils are clean and airflow is unobstructed.

2. 2

   Allow the system the full 4-hour lockout period.

3. 3

   Check the system's operating temperatures.

4. 4

   Contact an HVAC technician to check refrigerant pressures and charge.