4-7-4. Locating Alarm and Disposal
List of Alarm Indications with their Causes and Remedies in cooling mode
Display
alarm
Set point
Recovery point
Action
J-01
Chilled water low temp.
2.5
o
C or below
above 2.5
o
C
(36.5
o
F)
(36.5
o
F)
J-02
Chilled water pump
interlock OFF
interlock ON
J-03
Chilled water flow
50% or below
above 50%
J-20
Cooling water low temp.
24
℃
or below
above 24
℃
(75.2
o
F)
(75.2
o
F)
for 30 minutes
J-29
Cooling water pump failure
J-31
Refrigerant low temp.
2.0
o
C or below
above 2.0
o
C
(35.6
o
F)
(35.6
o
F)
J-06
Cooling water pump
J-07
Cooling water flow
50% or below
above 50%
J-13
Generator high temp.
below 105
℃
(221
o
F)
J-16
High concentration
J-04
No.1 Absorbent pump
J-05
No.2 Absorbent pump
J-10
Refrigerant pump
J-12
Purge pump
J-11
Chilled water flow switch
J-21
Cooling cycle failure
A-05
Power failure
(while operating)
Flow switch ON
during the chiller
stops
Flow switch
OFF during the
chiller stops
Operate the cooling water
pump after cheking it.
Operate the cooling water
pump after cheking the cause
of alarm. If you can not find the
cause, contact a service agent.
Contact a service agent.
Check other alarms with
▲
key
Contact a service agent.
Check other alarms with
▲
key
If the alarm occurred during
purging, shut the diaphragm
valves immediately.
Rated current
value or above
Contact a service agent.
Check other alarms with
▲
key
above
1.0
o
C(1.8
o
F) at
85% or above
input.
Contact a service agent. Check
other alarm with
▲
key
Operate the chiller after
checking the setting of cooling
water temp. If the alarm
occuers again, contact a
service agent.
Stop the cooling water pump.
Contact a service agent. Check
other alarms with
▲
key
Contact a service agent. Check
other alarm with
▲
key
Operate the chilled water pump
after checking the cause of
alarm. If you can not find a
cause, contact a service agent.
interlock OFF
105
o
C(221
o
F)
or above
2 times of 65% or
above. 65.5% or
above
More than 1 hour Alarm reset
See chapter 2, 2-4
Reset the
thermal relay
Cooling water
pump ON within
1 hour after the
chiller shutdown
Cooling water
pump OFF
interlock ON
below 65%
Chilled water temp.
difference 1.0
o
C(1.8
o
F)
or below for 30min. at
85% or above input.
4-12