Q: Why sometimes the buttons are unavailable?
A: If there is no operation on panel for 1 min, unit will lock the panel,
shows " ", to unlock the panel, please press the "
for 2 seconds.
Q: Why sometimes there is some water flowed from drainage pipe of
PTR valve?
A: 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 1.0MPa, PTR valve
will activate to relief the pressure and hot water drop will be
discharged correspondingly. If water drop is continually
discharged from PTR valve drainage pipe, it is abnormal, please
contact qualified stuff to repair.
6.2 Something about self-protection of unit
1)
When the self-protection happens, the system will be stopped
and start self-check, and restart when the protection resolved.
When the self-protection happens, the
2)
code will be shown at water temperature indicator. But the
and error code does not disappear until protection resolved.
In the following circumstance, self-protection may happen:
Air inlet or outlet is blocked;
The evaporator is covered with too much dust;
3)
Incorrect power supply(exceeding the range of 220-240V).
6.3 When error happened
1)
If some normal errors happen, unit will automatically shift to
E-heater for emergent SHW supply, please contact qualified
staff to repair.
2)
If some sever errors happen, unit will not start, please contact
qualified staff to repair.
" button
will flash and error
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