Delta RowCool HCH1CH0 User Manual page 50

Abnormal
No.
phenomenon
The two-way
12 ball valve has no
response.
It is unable to get
13 on-line via the
Modbus protocol.
System alarm exclusion:
No. Alarm Information
1 Filter clogged
The condensed
2
3 EPO Active
InfraSuite RowCool Precision Cooling –
Chilled Water
Possible cause
The actuator is not correctly
connected.
The RS232 or RS485
connector is not correctly
connected.
The Baud rate setting is
abnormal or the ID does not
match.
Possible cause
foreign matter or are old.
The condensed water pipe
or condensed water pump
is abnormal, or the piping
The EPO button on the
control panel is pressed or
emergency stop is triggered
Emergency stop is triggered
due to leakage
Elimination method
Re-set the actuator.
Re-connect the connector.
Elimination method
Remove the surplus water, inspect
the condensed water pump and
make sure the condensed water
pipe (without bending, damage or
blockage) is correctly connected and
the draining is normal. If upper piping
is adopted, make sure the vertical lift
Eliminate the abnormality, reset the
circuit breaker of the unit and re-
start the unit to recover the normal
operation.
1. Eliminate the abnormality, make
sure the water leakage detector
is dry, reset the circuit breaker of
the unit and re-start the unit to
recover the normal operation.
2. If the water leakage detector
cannot be dried in a short time,
reset the circuit breaker of the
unit to recover the operation.
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