25
Node rod replaced
Turn off the power supply and water inlet valve
.
Open hot water tap, and decrease the pressure of the
inner container
.
Open the drainage valve, and drain out the water, until
there is no water flow out.
Get off the anode rod.
Replace with a new one, and make sure effective sealed
.
Open cold water inlet tap until water flows out from outlet tap, then turn off water outlet tap.
Power on, and then restart the unit.
PT Valve
The handle of PT Valve should be pulled out once per half a
year to make sure that there is no jam of the valve. Please
beware of burn by hot water from the valve.
The drainage pipe should be well insulated in order to prevent
water inside pipe from freezing in cold weather
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 automatically.
Cleaning filter
Filter is inserted in the principal air inlet duct;
Unscrew the air inlet ring in anti-clockwise sense;
Remove filter and clean it completely;
Reassemble it in the unit;
Restart after Long Stop
When the system is started after a long time (trial running included), it is normal if the outlet
water is unclean. Keep the tap on and it will be clean soon.
2.12
Trouble shooting
Error phenomenon
Cause
Resolutions
Cold water tapped
out and display
screen extinguished
Bad connection of power supply plug and socket;
Plug in;
Setting outlet water temperature too low;
Setting water temperature higher;
Temperature sensor broken;
PCB indicator broken;
Contact service center.
No hot water tapped
out
Public water supply ceased;
Waiting for public water supply recover;
Cold water inlet pressure is too low (
<
0.15MPa);
Waiting for inlet water pressure increase;
Cold water inlet valve closed;
Open water inlet valve;
Water leakage
Hydraulic pipeline joints are not sealed well;
Check and reseal all the joints;
Handle
Drainage
pipe
If the unit occurs any malfunction or error, please shut down the system, turn off the power supply,
and consult your service persons for help.
