Hitachi RAS-(4-12)HNP(1)(E) - Incorrect Setting of Unit Model Code; Incorrect Setting of Unit and Refrigerant Cycle Number; Incorrect Setting of Indoor Unit Number for H-LINK Type

8 Troubleshooting
274
SMGB0087 rev.0 - 12/2013
Alarm code
EE
Compressor protection
• This alarm code is displayed when one of the following alarms occurs three times within six hours. If the outdoor unit
operates continuously without removing the cause of the alarm, the compressor may be seriously damaged
Alarm code Content of abnormality
02 Tripping of protection device in outdoor unit
07 Decrease in discharge gas superheat
08 Increase in discharge gas temperature
45 Activation of high pressure increase protection device
47 Low pressure decrease protection activating
You can check these alarms using the check mode 1. Follow the action that is indicated in each alarm chart. You can clear
these alarms only by turning OFF the main switch to the system. However, you must pay careful attention before start-
ing, because there is a possibility of causing serious damages to the compressors.
Alarm code
b0
Incorrect Setting of Unit Model Code
- This alarm code is indicated in the following condition. Check the unit model code setting (DSW4) of I.U. PCB after
turning OFF the power source.
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 according to the dip switch setting in
“Installation and Maintenance Manual”.
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 re-
frigerant cycle unit number setting (DSW5 and RSW2) is set
as “64” or more, or more than 2 pins of DSW5 or DSW6 are
set.
a. 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”.)
b. 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 in-
door 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 not supporting
H-LINK II is 17 and after.
The number of the connected indoor units shall be 16 and before.