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
Table 10-10 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.
185
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