Chapter Ⅳ Maintenance（1. Error Code）
57
Water flow
switch
protection
Water flow switch protection aims to prevent over-high fluorine system
pressure of the unit arising from over-low entering water pressure or poor
water flow. When disconnection of the water flow switch is detected
during operation, unit will stop and the water makeup valve will be closed.
Waterway pressure switch can be reset automatically. When the startup
conditions are satisfied, unit will start up automatically and each
component is controlled normally. If the error is eliminated after you press
the “reset” button, error is cleared.
System high
temperature
protection
Leaving water
temperature
If the leaving water temperature is higher than 65℃ when compressor is
operating, turn off all the loads immediately. When the leaving water
temperature drops lower than 60℃, high temperature protection is
cancelled and unit will operate according to the original operating
condition of water heating.
Outdoor
ambient
temperature
sensor error
Outdoor
ambient
temperature
sensor
Outdoor ambient temperature sensor is one condition used to control
whether unit can enter the defrosting status and the condition of starting
up the unit. If outdoor ambient temperature sensor detects open circuit or
short circuit, the error code is displayed and all the loads are shut down.
After system is recovered automatically, unit restores operation.
Discharge
temperature
sensor error
Discharge
temperature
sensor
The discharge temperature sensor is used to prevent unit failure or
damage arising from compressor oil decomposition and carbonization
when system is operating in an abnormal status and discharge
temperature is too high. When open circuit or short circuit occurs to the
discharge temperature sensor, unit will display the error code and the
corresponding load is shut down. After system is recovered
automatically, unit restores operation.
Outdoor inlet
pipe
temperature
sensor error
Outdoor inlet
pipe
temperature
sensor
In order to implement defrosting timely when the unit is operating in
winter, the outdoor inlet pipe temperature sensor is one of the conditions
used to detect whether unit can enter the defrosting status. When open
circuit or short circuit occurs to the outdoor inlet pipe temperature sensor,
the error code is displayed and all the loads are shut down. After system
is recovered automatically, unit restores operation.
Outdoor outlet
pipe
temperature
sensor error
Outdoor outlet
pipe
temperature
sensor
Error of the outdoor outlet pipe temperature sensor is one of the
conditions used to judge whether unit can exit the defrosting status.
When open circuit or short circuit occurs to the outdoor outlet pipe
temperature sensor, the error code is displayed and all the loads are shut
down. After system is recovered automatically, unit restores operation.
Entering water
temperature
sensor error
Entering water
temperature
sensor
When the entering water temperature sensor fails to work, unit will still
operate but error code is displayed. The error is cleared automatically
when it is recovered.
Leaving water
temperature
sensor error
Leaving water
temperature
sensor
When the leaving water temperature sensor fails to work, unit will still
operate but error code is displayed. The error is cleared automatically
when it is recovered.
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