Maintenance - EcoSpring ES300 Installation & Owner's Manual

10. MAINTENANCE

10.1 General Maintenance
Check the connection between power supply plug, socket and
ground wiring regularly;
In some cold areas (below 0℃), if the system is to be stopped
for a long time, the tank should be drained of water to prevent
damage to the unit.
It is recommended to drain the inner tank regularly to maintain
efficient performance.
The anode rod should be checked and changed if necessary by
qualified installed every year. For more details, please contact
the supplier.
Clean the air filter every year to maintain heating performance.
Air inlet filter, the method to dismantle the filter is:
unscrew the air inlet ring anti-clockwise, take out the filter and
clean it completely, finally, refit to the unit. For unit with
ducting, remove duct first then follow above instruction.
Before shutting the system down for a long perid, ensure that:
Power supply has been shut off;
Water in water tank and pipeline has been drained and all
valves has been closed;
Instruction to change anode rod (for qualified installer)
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 no water flows out.
Unscrew anode rod.
Replace with a new one, and make sure it is sealed effectively.
Open cold water valve until hot water flows out, and turn off the
hot water tap.
Restart.
Installation & Owner's Manual
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10.2 Non-error Malfunction
3-minute Protection
If the power supplied is interupted, a restart after the shutting
down will commence in 3 minutes as to protect the compressor.
If self-protection occurs and the system stops, check :
When the power indicator lights up, whether the system has
been forced to run while startup requirement has not been met;
If the air outlet or inlet is blocked or strong winds are blowing.
Defrosting
When the environment is humid and cold, the evaporated water
may freeze and the water-heating capacity thus decreases.
When this happens, the system will stop heating water
and go into defrostmode, then restart water-heating upon
completion.
During defrosting, fan stops working, four-way valve reverses
the flow direction, and compressor keeps working.
The defrosting time varies from 3 minutes to 10 minutes
depending on the ambient temperature and the frost.
Temperature Display
When the system stops, a decrease of water temperature is
normal as heat loss. When it decreases to a certain 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.
10.3 Malfunctions and Resolutions
Table.10-1
Malfunction Cause
Outlet water is set on a low
temperature
Outlet water
Outlet water temperature
is cold.
controller is damaged
Tap water has been cut off
No hot
water from
the outlet. Water pressure is too low
Inlet valve has been closed
Water The joints on the pipeline are
leakage
not sealed well
Bad connection of power
The display
supply plug and socket
is dark.
Circuit board indicator is
damaged
10.4 After-Sale Service
If the unit run into malfunction or error, it should be shut down
and the power supply cut off. Please contact Parex Industries
Ph 0800 200 510.
Resolutions
Set outlet water to
a higher tempera-
ture
Contact the
installer
Will return to normal
after supplied water
Contact installer
Open the inlet water
valve
Check and reseal
all the connections
Reconnect the plug
Contact the
installer