U1 - Reverse phase, open phase (Outdoor Unit)

Was bedeutet U1 ?

The unit has detected an incorrect phase sequence in the power supply or an open phase, which can damage the system.

• Incorrect electrical wiring
• Problem with the main power supply
• Faulty electrical components

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Turn off the power to the unit at the breaker.

2. 2

   Verify the electrical connections and ensure they are correct for your region.

3. 3

   Restore power and check if the error clears.

4. 4

   If the error persists, consult a qualified electrician or HVAC technician.