SM-16005-rev.2
3-33
TROUBLESHOOTING
Alarm
Code
Incorrect Setting of Unit Model Code
l
The RUN indicator (red) flashes.
l
The indoor unit number (refrigerant cycle number - address number), the alarm code, the model code*
1)
,
the model name*
1)
and the number of connected indoor units are displayed on the LCD. The indoor unit
number and the alarm code are displayed on the 7-segment display of the outdoor unit PCB.
*1) Except for some models.
H
This alarm code is displayed in the following condition. Check the unit model code setting (DSW4) of I.U.
PCB after turning OFF the power supply.
Condition
Action
The unit model code setting (DSW4) is not set (all pins
are “OFF”), or is set for the incorrect indoor unit type.
Set DSW4 correctly.
Alarm
Code
Incorrect Setting of Unit and Refrigerant Cycle Number
l
The RUN indicator (red) flashes.
l
The indoor unit number (refrigerant cycle number - address number), the alarm code, the model code*
1)
,
the model name*
1)
and the number of connected indoor units are displayed on the LCD. The indoor unit
number and the alarm code are displayed on the 7-segment display of the outdoor unit PCB.
*1) Except for some models.
H
This alarm code is displayed in the following condition. Check the settings of the DIP switch (DSW) and
the rotary switch (RSW) after turning OFF the power supply.
Condition
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 is “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 is “63”.)
Summary of Contents for IDM030B21E Series
Page 2: ......
Page 10: ...viii SM 16005 rev 2...
Page 14: ......
Page 15: ...SM 16005 rev 2 1 1 INSTALLATION 1 Installation...
Page 19: ...SM 16005 rev 2 2 1 OPERATION 2 Operation...
Page 22: ......
Page 23: ...SM 16005 rev 2 3 1 TROUBLESHOOTING 3 Troubleshooting...
Page 70: ......
Page 71: ...SM 16005 rev 2 4 1 MAINTENANCE 4 Maintenance...
Page 130: ......
Page 131: ...SM 16005 rev 2 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions...
Page 140: ...6 10 SM 16005 rev 2 FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A f t 3 l b...
Page 141: ...SERVICE PARTS LIST SM 16005 rev 2 7 1 7 Service Parts List...
Page 143: ......
Page 144: ...2016 Johnson Controls Inc SM 16005 rev 2 Code No LIT 12012293 Revised February 2019...