16
Installation & Owner‘s Manual
10. MAINTENANCE
Check the connection between power supply plug and socket
and ground wiring regularly;
In some cold area (below 0℃), if the system will be stopped for
a long time, all the water should be released in case of freezing
of inner tank and damage of e-heater.
It is recommended to clean the inner tank and e-heater
regularly to keep an efficient performance.
Check the anode rod every half year and change it if it has been
used out. For more details, please contact the supplier or the
after-sale service.
It is recommended to set a lower temperature to decrease the
heat release, prevent scale and save energy if the outlet water
is sufficient.
Clean the air filter every month in case of any affect on the
heating performance.
In terms of the filter set in air inlet directly (namely, air inlet
without connect with canvas), the method of dismantle the filter
is: anti-clockwise unscrew the air inlet ring, take out the filter
and clean it completely, finally, remount it to the unit.
Before shutting the system down for a long time, please:
Shut down the power supply;
Release all the water in water tank and the pipeline and close
all the valves;
Check the inner components regularly.
10.1 Maintenance
Turn off the power, and turn off the water inlet valve.
Open hot water tap, and decrease the pressure of the inner
container.
Open the temperature pressure valve, and drain out the water,
until there are no water flow out of .
Get off the anode rod according to instruction.
Replace with a new one, and make sure effective sealed.
Open cold water valve until hot water flows out, and turn off the
hot water tap.
Restart and can be used normally.
How to Change the Anode rod
3-min Protection
With the power supplied, an immediate restart after the shutting
down will have to wait 3 min as to protect the compressor.
If self-protection happens and the system stops, check :
When the power indicator lights up, if the system is forced to run
while startup requirement has not been met;
If the air outlet or inlet is jammed or strong wind blows to air
outlet.
Defrosting
When it is humid and cold, the evaporate may defrost and the
water-heating capacity decrease. And the system will stop
heating water and start defrosting and then restart water-
heating
During defrosting, fan stops working, four-way valve reverses
the flow direction, and compressor keeps working.
The defrosting time varies from 3min to 10min according to the
ambient temperature and the frost.
Temperature Display
When the system stops, a decrease of the temperature is
normal as heat released. When it decreases to some point, the
system will restart automatically;
During water-heating, the displayed water temperature might
still decrease or not increase for a period of time because of the
heat exchange of the water. When the whole tank of water has
reached the set temperature, the system will stop automati-
cally.
10.2 Non-error Malfunction
10.3 Malfunctions and Resolutions
10.4 After-Sale Service
Malfunction
Outlet water
is cold.
The display
is dark.
No hot
water from
the outlet.
Water
leakage
Cause Resolutions
Bad connection of power
supply plug and socket;
Outlet water is set an a low
temperature;
Outlet water temperature
controller is damaged;
Circuit board of indicating
indicator is damaged;
Tap water has been cut away;
Water pressure is too low;
Inlet valve has been closed.
The joints on the pipeline are
not sealed well.
Reconnect the
plug;
Set outlet water an
a higher
temperature;
Contact the
technician.
It’ll return to normal
after water supplied;
Use it when the
pressure is higher;
Open the inlet water
valve.
Check and reseal
all the joints.
If the unit runs to some malfunction or error, it should be shut
down and power supply cut off. And then please contact your
local service center or supplier for help.
Table.10-1