Outdoor Board LED1 (green) blinks three times and LED2 (red) blinks three times alternately - Abnormality of superheat due to low discharge temperature

Was bedeutet U7 ?

During startup or operation, the outdoor unit's LED1 (green) blinks three times and LED2 (red) blinks three times alternately, indicating an abnormality of superheat due to a low discharge temperature.

• Abnormal superheat due to low discharge temperature.
• Stop valves are not open.
• Insufficient refrigerant charge.

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Check if the stop valves are fully open.

2. 2

   Check if the unit is filled with the specified amount of refrigerant.

3. 3

   A qualified technician should inspect the refrigerant charge and superheat settings.