Error Code 44 — High pressure detected in system

What does 44 mean?

The system is operating at excessive refrigerant pressure. This is often caused by an overcharge, especially in new installations.

• Overcharge of refrigerant
• Dirty outdoor coil
• Restriction in the refrigeration circuit
• Undersized or excessively long refrigerant lines (in heating mode)

Click steps to track your progress.

1. 1

   Verify the refrigerant charge using the weigh-in method.

2. 2

   Clean the outdoor coil if it is dirty.

3. 3

   Check for any restrictions in the refrigeration circuit.

4. 4

   Ensure refrigerant lines are correctly sized and not excessively long for the installation.