Huawei NetCol5000-A - Page 143

NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
5 Operation and Maintenance
Issue 01 (2017-07-27)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
135
Alarm
ID
Alarm
Alarm
Severity
Impact
Possible Cause
Solution
or is unavailable.
7. Cables to the outdoor unit
are not properly
connected.
8. The outdoor fan driver or
fan is faulty.
outdoor unit.
8. Maintain or replace the
outdoor unit or unit
driver.
a013
Comp
discharge
HT lock
Critical
The alarm
is
generated,
and the
compresso
r shuts
down.
The a012 comp discharge
HT alarm is generated
frequently.
Reference to the solutions
for the a012 comp discharge
HT.
a015
Comp
exceed
runtime
Warning
The alarm
is
generated.
The accumulated runtime of
the compressor exceeds the
alarm threshold.
Maintain or replace the
compressor. Tap Maint >
Performance Maint to clear
the accumulated runtime.
a018
Indoor fan
1, 2, 3, 4,
5, 6, 7, 8,
9, or 10
exceed
runtime
Warning
The alarm
is
generated.
The accumulated runtime of
the fan exceeds the alarm
threshold.
Maintain or replace the
indoor fan. Tap Maint >
Performance Maint to clear
the accumulated runtime.
a023
Electric
heater HT
Major
The alarm
is
generated,
and the
electric
heater
shuts
down
forcibly.
1. The temperature switch
probes are located
inappropriately.
2. The cables to the temp
switch of the elec reheat
are loose or damaged.
3. The temp switch is faulty.
4. The manual reset
temperature switch is not
reset.
5. The indoor fans are
faulty.
1. Adjust the positions of
the temperature switch
probes.
2. Check the cables to the
temp switch of the elec
reheat.
3. Maintain or replace the
temperature switch.
4. Reset the manual reset
switch.
5. Maintain or replace the
indoor fans.
a024
Elec
heater
exceed
runtime
Warning
The alarm
is
generated.
The accumulated runtime of
the electric heater exceeds
the alarm set point.
Maintain or replace the
electric heater. Tap Maint >
Performance Maint to clear
the accumulated runtime.
a025
Air filter
blocked
Warning
The alarm
is
generated.
1. Air filters are blocked.
2. The differential press
switch is faulty.
3. The differential press
switch is set
inappropriately.
4. The pressure inlet tube of
the differential pressure
1. Maintain or replace the
air filters.
2. Replace the differential
press switch.
3. Adjust the thres of the
differential press switch.
4. Maintain or replace the
press tube.