JOHNSON CONTROLS
121
SECTION 6 – OPERATION
FORM 155.30-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
6
TABLE 25 -
FAILURE LIST
BUTTON LABEL
(FAILURE NAME)
OPERATION AT FAILURE
OCCURRENCE
CAUSE
Chilled W. Time Out
(Chilled Water Time Out)
Not start
Chilled water pump operation interlock and/or chilled
water suspension relay was not established within a set
time while start-up.
Cooling W. Time Out
(Cooling Water Time Out)
Cooling water pump operation interlock was not
established within a set time while start-up.
Operation interlock
Stop after dilution
Operation interlock was not established during solution
pump automatic operation.
CW Pump Interlock
(Cooling Water Pump
Interlock)
Cooling water pump interlock was not established during
cooling water pump operation command output.
Monitor. Interlock
(Monitoring Interlock)
Constantly monitoring interlock (seismoscope, high room
temperature signal, and so on) was not established.
HW Pump Interlock (Hot
Water Pump Interlock)
Hot water pump interlock was not established during hot
water pump operation command output.
Chilled W. Suspension
(Chilled Water Suspension)
Stop without dilution
Chilled water flow suspension had been detected
continuously during solution pump automatic operation.
Chilled W. Overcooled
(Chilled Water Overcool)
Chilled water outlet temperature fell down abnormally
during cooling operation.
Refrigerant Overcooled
Refrigerant temperature fell down abnormally during
cooling operation, and then refrigerant overcool relay was
activated.
Low Cool. W. Inlet Temp.
(Low Cooling Water Inlet
Temperature).
Stop after dilution
Cooling water inlet temperature had been kept at its lower
limit or lower for 30 minutes or longer during cooling
operation.
Cooling W. Suspension
(Cooling Water
Suspension) (Option)
Stop without dilution
Cooling water suspension had been detected
continuously during solution pump automatic operation
while cooling operation.
Control Sensor Abnormal
Stop after dilution
Temperature sensor and/or pressure sensor detected
abnormal value due to disconnection, short circuit, or
other loose connections.
CPU Abnormal
CPU was judged to be abnormal.
Sol. Circu. P. Abnormal
(Solution Circulation Pump
Abnormal)
Stop without dilution
Solution circulation pump thermal relay, or overheat
switch was activated.
Sol. Spray P. Abnormal
(Solution Spray Pump
Abnormal)
Solution spray pump thermal relay, or overheat switch
was activated.
Refrigerant P. Abnormal
(Refrigerant Pump
Abnormal)
Refrigerant pump thermal relay, or overheat switch was
activated.
Gen. High Temp.
(Generator High
Temperature)
Stop after dilution
Generator solution temperature rose abnormally.
Chiller High Press. (Chiller
High Pressure)
Chiller internal pressure rose abnormally.
