Daikin DPS Installation And Maintenance Manual page 124

ACS1 DataRcvd
Upon power up the IFB board receives initial confirmation
data from all the devices that are connected to the ACS1
channel. Problems with this confirmation are indicated with this
parameter . There are 8 possible conditions indicated . These
are described as follows:
ErrAll: IFB did not receive initial confirmation data from
any of the devices on the ACS1 communication channel .
This generally indicates a physical break in the ACS1
communication loop wiring between the IFB board and the
A4P and A5P boards or lack of power to both the A4P and A5P
boards .
F1F2Err: IFB did not receive initial confirmation data from
the OF2 nor OF1 on the ACS1 communication channel . This
generally indicates a defect in both the boards controlling OF1
(A4P or A5P) and OF2 (A5P) .
INVF2Err: IFB did not receive initial confirmation data from
the INV nor OF2 on the ACS1 communication channel . This
generally indicates a defect in both the boards controlling INV
(A4P) and OF2 (A5P) .
F2Err: IFB did not receive initial confirmation data from the
OF2 on the ACS1 communication channel . This generally
indicates a defect in the board controlling OF2 (A5P) .
INVF1Err: IFB did not receive initial confirmation data from
the INV or OF1 on the ACS1 communication channel . This
generally indicates a defect in both the boards controlling INV
(A4P) and OF1 (A4P or A5P) .
F1Err: IFB did not receive initial confirmation data from the
OF1 on the ACS1 communication channel . This generally
indicates a defect in the board controlling OF1 (A4P or A5P) .
INVErr: IFB did not receive initial confirmation data from the
INV on the ACS1 communication channel . This generally
indicates a defect in the board controlling INV (A4P) .
AllOK: All initial confirmation data has been received from all
the devices on the ACS1 communication loop .
OM 1141-3 • MICROTECH UNIT CONTROLLER
ACS3 DataRcvd
Upon power up the IFB board receives confirmation data
from all the devices that are connected to the ACS3 channel .
Problems with this confirmation are indicated with this
parameter . There are 2 possible conditions indicated . These
are described as follows:
Error: IFB did not receive initial confirmation data from
the EVB board on the ACS3 communication channel .
This generally indicates a physical break in the ACS3
communication loop wiring between the IFB board and the
EVB board, lack of power to the EVB board or a defect in the
EVB board .
OK: All initial confirmation data has been received from all the
EVB board on the ACS3 communication channel .
Fig 1 note
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