H4 - Actuation of low pressure switch (LPS) (Outdoor Unit)

Was bedeutet H4 ?

The low-pressure switch in the outdoor unit has activated, signaling critically low refrigerant pressure.

• Low refrigerant charge
• Refrigerant leak
• Blockage in refrigerant lines
• Faulty LPS

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Turn off the unit.

2. 2

   Check that all air intakes and filters are clear.

3. 3

   Restore power.

4. 4

   If the error persists, a refrigerant leak check by a professional is necessary.