Huawei NetCol5000-A User Manual page 166

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
Table 6-5 Yearly maintenance checklist
Compone
nt
Sensors
Evaporator The evaporator fins are not pushed
Welding
spot and
needle
valve
6.3 Alarm Reference
If the Clear icon is displayed on the Details screen, the alarm can be manually cleared by
tapping the Clear button after the fault is rectified. The alarm clearance type (automatic or
manual) varies with smart cooling products. Alarms can be cleared are a025, a058, a061, a062,
a064, a076, a079, a095.
Table 6-6 Alarm description
Alar Alarm Alarm
m Severit
ID y
Return-
a001 Major
air 1
temp
invalid
Return-
air 2
temp
invalid
Issue 13 (2019-01-15)
Item (on the Basis of Quarterly
Maintenance)
Use a high-precision humidity and
temperature sensor to calibrate the
humidity and temperature sensors
inside and outside the cabinet.
down.
Check that the welding spots and
needle valves do not leak using
soapy water, or check that they are
free from oil stains.
Default Impact
Value
The alarm
N/A
is
generated
.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Troubleshooting
If the temperature deviation is greater
than 1° C or humidity deviation is
greater than 5%, calibrate or replace
the humidity and temperature sensor.
For the calibration method, see the
4.4.2.5 Calibrating a
Use a fin brush to organize the fins that
are pushed down.
If leaking points are found, retrieve the
refrigerant and weld the leaking points
again. For details, contact Huawei
technical support.
Possible Cause
1. The cables to the temp
sensor are loose or
damaged.
2. The temp sensor is
faulty.
Sensor.
Solution
1. Check the cables to the
temp sensor.
2. Maintain or replace the
temp sensor.
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