Safety And Control Device Setting - Hitachi CH-Box Installation Manual

Code Category
Abnormal Communication between
03 Communication
Indoor Units and Outdoor Units
C1 Incorrect CH-Box Connection
C2 Incorrect Indoor Unit Connection Number
CH-Box Incorrect Indoor Unit Refrigerant Number
C3
Setting
Incorrect Connection between Ch-Box and
C4
Outdoor Units
C5 Incorrect Connection Port Setting
8.

Safety and Control Device Setting

CH-Box
For Control Circuit
Fuse
26
Table 7.1 Alarm Code
Content of Abnormality
Model
A
Leading Cause
Incorrect Wiring, Loose Terminals, Disconnected
Communication Cable, Blowout of Fuse, Indoor Unit Power
OFF
2 or More CH-Boxes are Connected between
Outdoor Unit and Indoor Unit
9 or More Indoor Units Connected to Single Branch Type CH-Box
7 or More Indoor Units Connected per a Branch of Multiple
Branch Type CH-Box
Indoor Units of Different Refrigerant Cycle Number are
Connected to CH-Box
This Outdoor Unit is not compatible with this CH-Box.
Indoor Unit is connected to a port that is set to not used for
Multiple Branch Type CH-Box.
CH-AP04MSSX, CH-AP08MSSX,
CH-AP12MSSX, CH-AP16MSSX
JCH-AP04MSSX, JCH-AP08MSSX,
JCH-AP12MSSX, JCH-AP16MSSX
5
P5417025-rev.1