Hitachi RAS-3-HVNC - Page 265

8. Troubleshooting
251
SMGB0079 rev.0 - 01/2013
8
Alarm code
b1
Incorrect Setting of Unit and Refrigerant Cycle No.
• The RUN LED ickers and “ALARM” is displayed on the remote control switch.
• The unit number, the alarm code and the unit code are alternately displayed on the set temperature section. The unit
number and the alarm code are displayed on the display of the outdoor unit PCB.
- This alarm code is indicated in the following condition. Check the settings of the dip switch (DSW) and the rotary
switch (RSW) after turning OFF the power source.
Conditions Action
The unit No. setting (DSW6 and RSW1) or the refrigerant
cycle No. setting (DSW5 and RSW2) is set as “64” or
more, or more than 2 pins of DSW5 or DSW6 are set.
a) Unit No. Setting / Ref. Cycle No. Setting Starting
- from “1” (recommended)
- Set the unit No. and the refrigerant cycle No.
- from “1” to “63”. (Setting No. for the 64th unit
- shall be “0”.)
b) Unit No. Setting / Ref. Cycle No. Setting Starting
- from “0”
- Set the unit No. and the refrigerant cycle No.
- from “0” to “63.” (Setting No. for the 64th unit
- shall be “63”.)
The unit No. setting and the refrigerant cycle No. setting
are set between “16” and “63,” and the indoor unit does
not support H-LINK ll.
Set the unit No. and the refrigerant cycle No. between “0” and
“15.”
Alarm code
b5
Incorrect Setting of Indoor Unit Number for H-LINK Type
• The RUN LED ickers and “ALARM” is displayed on the remote control switch.
• The unit number, the alarm code
*)
and the unit code are alternately displayed on the set temperature section. The unit
number and the alarm code are displayed on the display of the outdoor unit PCB.
*): The alarm code indicated on the remote control switch is “35”.
Condition Action
The number of the connected indoor units not supporting
H-LINK II is 17 and after
.
The number of the connected indoor units shall be 16
and before.