JOHNSON CONTROLS
113
SECTION 6 – OPERATION
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
6
ALARM NAME
CAUSE OF ALARM AND
CONDITION TO RESET
COUNTER MEASURES
Cooling Water Tube
Fouling
Temperature difference between the
absorber temperature and cooling water
inlet temperature widened, therefore fouling
of cooling water tube inside is likely to be
accumulated. The alarm is reset via alarm
reset.
• Check the cooling water line.
• Check the cooling water flow.
• Contact your local Johnson Controls Service Center.
HG Tube Fouling
Temperature difference between the exhaust
gas temperature and HG temperature
widened, therefore fouling of HG tube inside
is likely to be accumulated. The alarm is
reset via alarm reset.
Contact your local Johnson Controls Service Center.
Refrigerant Pump
Stop
The Refrigerant Pump
Stop
button has been
pressed for 1 hour or longer while operation
command was output.
Press the Refrigerant Pump
Auto
button.
HG High Pressure
Prevention
HG pressure rose and the load limit
operation was activated. The alarm is reset
when the HG pressure reaches 85.3 kPa.
• Check the cooling water line.
• Check the cooling water flow rate.
• Check the cooling tower.
• Purge manually (according to instructions in
SECTION 7- MAINTENANCE
on
).
• Contact your local Johnson Controls Service Center.
HG High
Temperature
Prevention
High generator solution temperature and
load limit operation was activated. The alarm
is reset when solution concentration reaches
158°C.
HG High
Concentration
Prevention Control
High solution concentration and load limit
operation was activated. The alarm is reset
when after 60 seconds.
Low Cooling Water
Inlet Temperature
Cooling water inlet temperature fell down
to its lower limit or lower during cooling
operation, and then load limit operation was
activated. Alarm is reset when the cooling
water inlet temperature rises.
Check the cooling water inlet temperature control
system.
High Cooling Water
Inlet Temperature
Cooling water inlet temperature rose to or
above it's upper limit or higher during cooling
operation, and the load limit operation was
activated. The alarm is reset when the
cooling water inlet temperature falls.
• Check the cooling water inlet temperature control
system.
• Check the cooling tower.
Recording Sensor
Abnormal
Chilled / hot water inlet temperature sensor,
cooling water inlet temperature sensor, and/
or Absorber temperature sensor detected
abnormal value, due to disconnection,
short circuit, etc. Remote setting signal was
abnormal during remote SP mode (remote
chilled/hot water outlet temperature setting
mode) Alarm is reset via alarm reset after
temperature returns to normal.
• Check the remote setting signal.
• Tighten the terminal.
• Contact your local Johnson Controls Service Center.
Low Battery Voltage
Voltage level of the battery in the control
board fell down. Alarm is reset via alarm
reset after replacement of the battery in the
control board.
Replace the battery on the PWB.
TABLE 21 -
ALARM LIST (CONT'D)
