Huawei NetCol5000-A User Manual page 143

NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
Alarm
Alarm
ID
a013 Comp
discharge
HT lock
a015 Comp
exceed
runtime
Indoor fan
a018
1, 2, 3, 4,
5, 6, 7, 8,
9, or 10
exceed
runtime
a023 Electric
heater HT
a024 Elec
heater
exceed
runtime
a025 Air filter
blocked
Issue 01 (2017-07-27)
Alarm
Impact
Severity
Critical The alarm
is
generated,
and the
compresso
r shuts
down.
Warning The alarm
is
generated.
The alarm
Warning
is
generated.
Major The alarm
is
generated,
and the
electric
heater
shuts
down
forcibly.
Warning The alarm
is
generated.
Warning The alarm
is
generated.
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Possible Cause
or is unavailable.
7. Cables to the outdoor unit
are not properly
connected.
8. The outdoor fan driver or
fan is faulty.
The a012 comp discharge
HT alarm is generated
frequently.
The accumulated runtime of
the compressor exceeds the
alarm threshold.
The accumulated runtime of
the fan exceeds the alarm
threshold.
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.
The accumulated runtime of
the electric heater exceeds
the alarm set point.
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
5 Operation and Maintenance
Solution
outdoor unit.
8. Maintain or replace the
outdoor unit or unit
driver.
Reference to the solutions
for the a012 comp discharge
HT.
Maintain or replace the
compressor. Tap Maint >
Performance Maint to clear
the accumulated runtime.
Maintain or replace the
indoor fan. Tap Maint >
Performance Maint to clear
the accumulated runtime.
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.
Maintain or replace the
electric heater. Tap Maint >
Performance Maint to clear
the accumulated runtime.
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.
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