Chapter Ⅳ Maintenance（1. Error Code）
58
Water level
switch error of
the water tank
When the high-level water level switch indicates that water level is high
and the low-level water level switch indicates that water level is low, the
unit reports the water level switch error. If the error setting is absent, unit
will start or stop abnormally. If the error is eliminated, unit can restore
operation automatically.
Water tank
temperature
sensor error
Water tank
temperature
sensor
When open circuit or short circuit occurs to the water tank temperature
sensor (water supply outlet from water tank to the unit), the error code is
displayed and all the loads are shut down. After system is recovered
automatically, unit restores operation.
Error on sensor
of anti-freezing
for shell and
tube
Sensor of
anti-freezing
for shell and
tube
Sensor of anti-freezing for shell and tube is used for detecting the
temperature shell and tube. When the sensor occurs error, the unit
operates normally and error code is displayed. The error will be cleared
automatically when error resumes.
Communication
error for electric
expanding valve
drive board
Electric
expanding
valve drive
board
When the unit is energized and when the drive board hasn‟t received the
communication information of main board for 20s continuously, the drive
board will report communication malfunction. When the drive board and
main board connect normally, the error will disappear.
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