No rated voltage between S1 and S2 — Power supply issue or wiring fault

¿Qué significa Rated voltage not present between S1 and S2 ?

The expected rated voltage is not detected between the outdoor terminal block S1 and S2. This indicates a problem with the incoming power supply or the wiring to the unit.

• No power supplied to the unit
• Power supply wiring issue
• Faulty connection at the terminal block

Haga clic en los pasos para seguir su progreso.

1. 1

   Check the main power supply to the unit.

2. 2

   Verify the wiring between the power source and the outdoor terminal block (S1, S2).

3. 3

   Ensure connections at the terminal block are secure and free of corrosion.

4. 4

   If voltage is confirmed at the source but not at the terminals, investigate the wiring.