Envicool XRow Series - Power Supply; Communication Fault; Sensor Fault

Shenzhen Envicool Technology Co., Ltd.
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contactors, heaters, etc). Check whether the working current of the heater is appropriate (refer to the
current ratings on the nameplate of the equipment).
5.1.6 Power supply
The power supply alarm will be triggered under the following situations:
Overvoltage alarm: it alarms when the grid voltage of the equipment is higher than the input voltage
range. The alarm will automatically restore when the voltage of the power grid returns to normal.
Undervoltage alarm: it alarms when the grid voltage of the equipment is lower than the input voltage
range. The alarm will automatically restore when the voltage of the power grid returns to normal.
Phase loss/reverse phase fault: if the equipment uses three-phase input power, when the input power
has reverse phase or phase loss fault, the equipment will stop operating. The alarm will
automatically restore when the phase sequence is normal or the user manually changes the input
phase sequence. If the optional automatic phase sequence switching component is configured, the
unit will automatically adjust the phase sequence to ensure its normal operation.
5.1.7 Communication fault
1. It alarms if the communication cable between the display and the control input and output board
fails.
2. When the indoor and outdoor unit communication cable connection is faulty, the alarm is
triggered.
5.1.8 Sensor fault
The sensor fault will occur under the following situations:
Temperature sensor fails: when the temperature sensor has open circuit or short circuit, the alarm
will be triggered. Check if the sensor has physical damages. The alarm will be removed
automatically after the sensor is replaced.
Humidity sensor fails: On the screen , humidity display is "--",in this case control system to stop
humidification, check if there is a circuit loose or the sensor has physical damages. The alarm will
be removed automatically after the sensor is replaced.