PCB Care

Blue Star E6 Error Code

Communication Error.

ac · BO-5CNHW12QATU/QATX, BO-5CNHW18QATU/QATX
Communication Error

Cause: Signal wire fault between indoor and outdoor unit

How to fix: Check IDU-ODU communication wire for continuity, loose terminals, or damage. Check shielded cable grounding.

Blue Star boards that may fix E6

If the board is the cause, these refurbished Blue Star boards are in stock. Match the part number before you order.

Other Blue Star codes

b5b7C5E0E1E2E4E5E8ECEEEU