Error E14 / Indoor Red LED Flashes 3 times — Master/slave system setup or wiring error

What does E14 / Indoor Red LED 3 flashes mean?

Error E14, indicated by three flashes of the indoor unit's red LED, points to problems in a master/slave system setup. This could be incorrect SW5 settings on the indoor PCB, wrong control wiring (XYZ), or an open circuit in the control wiring between units.

• Incorrect setting of SW5 on indoor unit PCB (master/slave system)
• Incorrect control wiring between master and slave(s) (XYZ)
• Open circuit of control wiring between master and slave(s)

Click steps to track your progress.

1. 1

   Turn off the main power to the system.

2. 2

   Check the SW5 dip switch setting on the indoor unit PCB, ensuring it's correctly configured for master/slave operation.

3. 3

   Inspect the control wiring (X, Y, Z) between the master and slave units for correct connections and continuity.

4. 4

   Look for any signs of damage or loose connections in the control wiring.

5. 5

   If the issue persists, consult the installation manual or a professional technician.