What does 5 mean?

The IPM is protecting the compressor from an overload condition. This indicates the compressor is working too hard and risks damage.

• Low building power supply voltage
• Restrictions in the system
• Non-condensable gases in the system
• Blocked coil (outdoor or indoor)
• Excessive load on the system
• Refrigerant overcharge

Click steps to track your progress.

1. 1

   Check the building's power supply voltage.

2. 2

   Inspect for restrictions in the refrigeration circuit.

3. 3

   Clean indoor and outdoor coils.

4. 4

   Verify the refrigerant charge is correct.