10 Troubleshooting
Troubleshooting procedure
SMGB0091 rev.2 - 11/2015
244
Alarm code
b1
Incorrect setting of unit and refrigerant cycle number
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 unit number setting (DSW6 and RSW1) or the
refrigerant cycle unit number setting (DSW5 and RSW2) is
set as “64” or more, or more than 2 pins of DSW5 or DSW6
are set.
1
Unit number setting / refrigerant cycle number setting starting
from “1” (recommended).
-
Set the unit number and the refrigerant cycle number from
“1” to “63”. (Setting number for the 64th unit shall be “0”.)
2
Unit number setting / refrigerant cycle number setting starting
from “0”.
-
Set the unit number and the refrigerant cycle number from
“0” to “63.” (Setting number for the 64th unit shall be “63”.)
The unit unit number setting and the refrigerant cycle unit
number setting are set between “16” and “63,” and the
indoor unit does not support H-LINK ll.
Set the unit number and the refrigerant cycle unit number between
“0” and “15”.
Alarm code
b5
Incorrect setting of indoor unit number for H-LINK type
*): The alarm code indicated on the remote control switch is “35”.
Condition
Action
The number of the connected indoor units that does not support
H-LINK II is 17 and after.
The number of the connected indoor units must be 16 and before.