SM-18006
3-39
TROUBLESHOOTING
3.1.8 Emergency Operation
(1) Emergency Mode Operation from Wired Controller
((H,Y)VWH(P,R)144B(3,4)2S to (H,Y)VWH(P,R)216B(3,4)2S)
If the compressor fails, an emergency operation mode is accessible by the wired controller. Even if
the compressor fails, some air conditioning operation is continuously available until troubleshooting is
performed.
This Backup Operation Function prevents the system from coming to a complete stop when the water
source unit failure occurs.
Emergency operation starts with the wired controller after an alarm occurrence.
NOTE:
The emergency operation can be performed when the specied alarm code occurs.
Refer to the following “Emergency Operation Procedure”.
(a) Emergency Operation Procedure
For CIW01
By pressing “MENU” for three seconds, emergency operation starts.
“Temporary” is displayed on the LCD during this operation.
(b) Operation Condition
This emergency operation is NOT applicable to the compressors installed in the failed water source
unit.
x
Even if one compressor fails,
the other can be operated continuously.
Failed
Compressor
Do not perform emergency operation
more than eight hours. Going beyond
that may damage the unit.
NOTICE: Emergency Alarm Codes
Following these alarm codes, emergency
operation is possible.
Inverter Compressor Failure
06: Abnormality of Inverter Voltage
23: Abnormality of Discharge Gas Thermistor
48: Activation of Overcurrent Protection Device
51: Abnormality of Inverter Current Sensor
53: Inverter Error Signal Detection
OK
Menu
Back/Help
ECO
On/Off
Press “Menu” button
at least three seconds
when the alarm code
is indicated on the LCD.
Starting for Emergency Operatio
Emergency Operation Indication
Emergency
Operation
Indication
Sel.
IDU : TIC4036B21S
MODEL : F .08
Alarm Code: 23
ODU : TVAHR120B41S
01-02
AlarmRst
Address
Entr
OK
The screen will change as shown
in the above figure.
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