MAXA BDS28A Spezifikationen PDF herunterladen (Seite 24)

8.4.1.4 Communication Malfunction (E6)

1. Check if connection wire between indoor and outdoor units and wire inside the unit are connected well.

2. Check if mainboard of indoor or outdoor unit is damaged.

Communication malfunction of indoor unit

Power off the unit and check if the connecting

wire of indoor and outdoor unit and wiring o

electric box are correct.

Is wire connected correctly?

Does the broken-down indoor unit resume normal?

Replace the broken-down mainboard of the indoor unit

End

Connect wires according

to the wiring diagram

Is malfunction removed？

Power off the unit. Change the communication cable o

indoor units. Energize the unit and wait for 3 min

Replace mainboard of outdoor unit

Yes

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MAXA BDS28A Spezifikationen Seite 24