Master/Slave System Control Wiring Error / SW Setting Error

What does E14 mean?

This indicates an incorrect setting of DIP switches (SWS) on the indoor unit PCB when configuring a master/slave system. It also points to incorrect control wiring or an open circuit in the control wiring between master and slave units.

• Incorrect wiring between master and slave units.
• Master/slave configuration switch (e.g., SW4) set incorrectly.
• Communication wiring between master and slave is reversed or incomplete.
• Incorrect SW setting for system operation mode.
• Faulty communication interface on master or slave unit.

Click steps to track your progress.

1. 1

   Verify the SWS settings on the indoor unit PCB, ensuring they are correct for master/slave configuration.

2. 2

   Inspect the control wiring between master and slave unit(s) for correct connections.

3. 3

   Check the continuity of the control wiring between master and slave unit(s) to detect any open circuits.