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2.14 Non-error tips
Q: Why compressor can’t start immediately after setting?
A: Until will wait for 3 min. to balance the pressure of system before start compressor again; it’s a self protection on
unit .
D: Why sometimes the temperature shown on the display panel decrease while unit is running?
R: When the upper tank temperature is much higher than the bottom part, upper part of hot water will be mixed by
the bottom cold water wich is continually flow from inlet tap water so that will decrease the upper part
temperature.
D: Why sometimes the temperature shown the display panel decrease but unit still keep closed?
R: To avoid unit ON/OFF frequently, unit will activate heate source only when bottom tank temperature is lower than
setting temperature for at least 5°C.
D: Why sometimes the temperature shown the display panel decrease dramatically?
R: Because tank is pressure-bearable type, if there is massive hot demand, hot water will quikly tapped out from
upper part of tank as well as cold water will quikly tapped into bottom part of tank. If the cold water surface
emerge the upper temperature sensor, temperature shown on the display will decreased dramatically
.
D: Why sometimes the temperature shown the display panel decrease a lot but there is still a mount of hot water
that can be tapped?
R: Because the upper water sensor is located on the upper ¼ of tank; when tapping hot water out, it means there is
at least ¼ tank of hot water available.
D: Why sometimes unit shows “LA” on display?
R: The heat pump available running ambient range is -7°C ~ 43°C; if ambient temperature is out of range, system
will show above mentioned signal to let user notice it.
D: Why sometimes there is nothing shown on the display?
R: To mantain display screen lifespan within along term, when there is no button operation for 30 sec. it will
extinguish the display except LED indicator.
D: Why sometimes the buttons are unavailable?
R: If there is no operation on panel for 1 min. unit will lock the panel and shows “
” ; to unlock the panel, please
press “ENTER” button for 3 sec.
D: Why sometimes there is some water flowed from drainage pipe of PT valve?
R: Because the tank is pressure-bearable one; when water is heated inside the tank, water will expand, so the
pressure inside of tank will increase. If pressure goes up more than 1 MPa, PT valve will activate to relief the
pressure and hot water drop will be discharged correspondingly. If water drop is continually discharged from PT
valve drainage pipe, it is abnormal; please contact qualified stuff to repair.
Something about self-protection of unit
•
When the self protection happens, the system will be stopped and start self-check and restart
when the protection is resolved
•
When the self protection happens, the buzzer will buzz in every other minute, the
icon will
flash and error code will be shown at water temperature indicator. Press CANCEL button for 1
sec. to stop buzz, but the icon and error code does not disappear until protection resolved.
•
In the following circumstance, self-protection may happen: Air inlet or outlet is blocked,
Evaporator is covered with too much dust or Incorret power supply (exceeding the range of
220-240V)
.
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