3)
2)
1)
the buzzer but the alarm icon will keep glittering.
minute and the ))
) will flash fast. Press for 1 sec to stop
If some errors happen, the buzzer will buzz 3 times every other
qualified staff to repair.
If some sever errors happen, unit will not start, please contact
to repair.
E-heater for emergent SHW supply, please contact qualified staff
If some normal errors happen, unit will automatically shift to
3)
2)
1)
the upper part temperature.
which is continually flow from inlet tap water so that will decrease
part, upper part hot water will be mixed by the bottom cold water
A: When the upper tank temperature is much higher than the bottom
decreased while unit is running?
Q: Why sometimes the temperature shown on the display panel
before starting compressor again, it's a self protection logic of unit.
A: Unit will wait for 3 minutes to balance the pressure of system
Q: Why compressor can't start immediately after setting?
6.1 Non-error tips
6. TROUBLE SHOOTING
contact qualified stuff to repair.
discharged from PTR valve drainage pipe, it is abnormal, please
discharged correspondingly. If water drop is continually
will activate to relief the pressure and hot water drop will be
will increase, if pressure goes up more than 1.0MPa, PTR valve
inside the tank, water will expand, so the pressure inside of tank
A: Because the tank is pressure-bearable one, when water is heated
PTR valve?
Q: Why sometimes there is some water flowed from drainage pipe of
for 3 seconds.
shows " ", to unlock the panel, please press the "ENTER" button
A: If there is no operation on panel for 1 min, unit will lock the panel,
Q: Why sometimes the buttons are unavailable?
except the LED indicator.
is no button operation for 30 sec, it will extinguwish the display
A: To maintain display screen lifespan within along term, when there
Q: Why something there is nothing shown on the display?
above-mentioned signal to let user notice it.
ambient temperature is out of range, system will show
if
℃,A: The heat pump available running ambient range is -7-43
Q: Why sometimes unit shows "LA" on display ?
there is at least 1/4 tank of hot water available.
when display temperature starts falling down quickly, it means
A: Because the upper water sensor is located on the upper 1/4 tank,
tapped?
decreased a lot, but there is still a mount of hot water can be
Why sometimes the temperature shown on the display is
Q:
temperature shown on the display will decreased dramatically.
the cold water surface emerge the upper temperature sensor,
as well as cold water will quickly tapped into bottom part of bank if
demand, hot water will quickly tapped out from upper part of tank
A: Because tank is pressure-bearable type, if there is massive hot
decreased dramatically?
Q:Why sometimes the temperature shown on the display will
ºC.
max. temperature for at least 5
when bottom tank temperature is lower than setting temperature or
A: To avoid unit ON/OFF frequently, unit will activate heat source only
but unit still keep closed?
Q:Why sometimes the temperature shown on the display decreased
Incorrect power supply(exceeding the range of 220-240V).
The evaporator is covered with too much dust;
Air inlet or outlet is blocked;
In the following circumstance, self-protection may happen:
protection resolved.
buzz, but the and error code does not disappear until
water temperature indicator. Press button for 1sec to stop
other minute, the will flash and error code will be shown at
When the self-protection happens, the buzzer will buzz in every
start self-check, and restart when the protection resolved.
When the self-protection happens, the system will be stopped and
6.3 When error happened
6.2 Something about self-protection of unit
9
Press any button will unlock the screen(lighten)
except for error code and alarm icon.
locked(extinguished)
If there is no operation of button for 30s, screen will be
5.6 Screen Auto Lock
buttons.
unlock
locked except Unlock button , Press for 3s,
When there is no operation of button for 1 minute, button will be
unit will be back to the previous setting when power recover.
If electricity power failed, unit can memorize all setting parameters,
30s, then quit querying.
no button operation for
button for 1s or
circularly. Press
parameters by pressing
unit setting & running
querying user can check
go into querying. On
the same time for 1sec to
Press the two buttons at
will buzz one time.
codes, and the buzzer
all stored error & protect
the same time to clear
Press the two buttons at
+
+
Query
code
Clear error
Description
IconNo.
No Description
Icon
5.5 Button Auto Lock
5.4 Auto-restart
5.3 Combination button
on the display.
will lead to show invalid icon
If unit has already been in vacation or OFF, press
temperature to the last one before vacation.
function, and automatically reset the target
vacation, unit will automatically start disinfect
the remanent vacation days. On the last day of
as default and will show
℃
temperature is 15
In vacation period, the setting target water
CANCEL
CANCEL