Delta HCH1850 User Manual page 58

Alarm
No.
Information
12 Flow Meter
13 Fan 1-8 Failed
14 Ball Valve Error
15 Return/ Supply/
Remote# T High
16 Return/ Supply/
Remote# T Low
17 Return/ Supply/
Remote# RH
High
18 Return/ Supply/
Remote# RH
Low
19 Water In T High
20 Water In T Low
21 Water Flow High
22 Water Flow Low
23 Run Over Hours
24 Leak Wire Open
25 Remote EPO
NOTE:
If the alarm still exists after the above possible causes are eliminated, please contact
your dealer or customer service.
InfraSuite RowCool Precision Cooling –
Chilled Water
Possible cause
or in bad contact.
The # fan is abnormal or in
bad contact.
The three-way ball valve is
abnormal.
1) The environment
temperature and
humidity are abnormal.
2) The alarm setting is
abnormal.
3) The temperature sensor
is abnormal.
4) The load is too large.
rate of the chilled water
supplied by the chiller is
abnormal.
2) The alarm setting is
abnormal.
The periodic maintenance
has not been performed.
The water leakage detector
is not correctly connected.
The unit receives the
remote system's message
and shuts down.
Elimination method
Inspect the function of the flow meter and
Inspect if the # fan is blocked or abnormal
connected.
Inspect if the three-way ball valve is in bad
contact or faulty.
1) Inspect if the environment temperature
and humidity are within the operation
scope.
2) Inspect if the out-of-range alarm setting
is correct.
3) Inspect the temperature sensor function.
4) If the temperature is still too high after
elimi-
nating the above problems, please
cooling capacity of the cooling unit.
the chilled water.
2) Inspect if the out-of-range alarm setting
is correct.
To guarantee the normal operation of the
system, carry out the maintenance immedi-
ately.
Inspect if the water leakage detector is
loose, in bad contact or broken.
L e t t h e r e m o t e s y s t e m s e n d ' r e s e t '
command to the unit to recover normal
operation.
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