Figure 10-14
Working principles of the HX03T-22SH heat exchanger
Exhaust air
Heat transfer
plates
Cabinet
Ambient air
Return hot air
Supplier cold air
Monitoring
The HX03T-22SH heat exchanger has a built-in monitoring unit to implement the following
functions:
l
Monitoring fans for the internal and external cycles, and detecting fan speed
l
Monitoring the temperature sensor
l
Starting and stopping the heater, and detecting heater faults
When detecting any fault associated with the preceding aspects, the HX03T-22SH heat
exchanger reports an alarm.
LED
describes the LEDs on the front panel of the HX03T-22SH heat exchanger.
Table 10-10
LEDs on the front panel of the HX03T-22SH heat exchanger
Silk
Screen
Function
Status
Meaning
RUN
LED that
indicates the
power status
Green: on
The AC or DC power is on.
Green: on for 1s and off for 1s
repeatedly
The heat exchanger is running
in the normal state.
UA5000 Universal Access Unit
Environment Monitoring
10 Sensors
Issue 01 (2012-08-17)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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