The following shall be carried out for maintenance:
Turn off EWH power;
џ
Cool hot water or discharge it through the mixer;
џ
Cut off supply of cold water into EWH;
џ
Unscrew the relief valve or open drain valve;
џ
To put on the cold water supply inlet or discharge valve a rubber hose, sending the other end down
џ
the drain;
Open a hot water tap on mixer and drain water from the EWH through the hose;
џ
Remove the protective cover, disconnect wires, unscrew and remove from the casing the
џ
removable flange;
Clean if necessary THEs from scale and remove residue from the tank;
џ
Assemble, fill the EWH with water and power on.
џ
When conducting EWH maintenance by forces of specialized organization mark with the seal of
organization performing maintenance shall be made in service coupon.
When conducting EWH maintenance by forces of special organization the appropriate mark shall be
made in the warranty card. When replacing the magnesium anode independently by the consumer
magnesium anode purchase receipt shall be attached to present manual.
Specifying security measures
Electrical safety and corrosion protection of EWH are guaranteed only if there is an effective
earthing in accordance with applicable electric installation rules and regulations.
When installing and operating EWH the following is not allowed:
џ
To power EWH if EWH is not filled with water.
џ
To remove the protective cover when the power is on.
џ
Use EWH without grounding or use water pipes as grounding.
,
џ
To connect EWH to water supply with pressure exceeding 0 6 MPa. (If pressure in the supply
line is more than 0.6 MPa, an appropriate pressure reducing valve shall be installed at cold
water inlet ahead of safety valve (not supplied) to reduce water pressure to normal).
Installation of pressure reducing valve between EWH and relief valve is forbidden.
џ
To connect EWH to the water supply without safety valve.
џ
To drain water from EWH with power switched on.
џ
To use spare parts not recommended by the manufacturer.
џ
To use water from the EWH for cooking.
џ
To use water containing impurities (sand, small stones), which might lead to EWH and
safety valve breakdown.
џ
To modify design and installation dimensions of EWH brackets.
Water freezing in the appliance is prohibited because it causes its malfunction which is not a warranty
case.
EWH is not intended to be used by persons with limitations of health, sense or mental limitations, as
well as persons who are not able to use the EWH, except when it happens under the supervision or
instructions by a person responsible for EWH safety. Children can use EWH only under the
supervision of persons who know how to operate it safely. During EWH operation, it must be
inspected regularly for proper health (absence of dripping, burning smell, wiring sparks, etc.). In the
EN
EN
case of long interruptions in water heater operation, water supply failures, EWH must be disabled and
cold water inlet valve must be shut off.
Always be aware that there is a risk of hot water scalding and electric shock.
Possible faults and remedies
If an operational fault occurs EWH shall be disconnected from the mains, water supply shall be cut off.
Apply to a Service center.
Thermal switch tripped or
not on.
Powered EWH does
not heat water.
No backlights
of indicator lamps.
Disconnect EWH from the mains,
remove EWH protective cover,
press the safety button until you
hear a click (
fig. 3
), place the
cover and turn on power.
Power cord is damaged.
There is no voltage in the
mains
Contact power supply operation
service
RCD (if any) tripped
Push RCD restart button.
Check voltage.
Frequent tripping of
thermal switch
The set temperature is close
to the limit
Turn the thermostat control to
decrease temperature (
–
)
Thermostat tube is covered
with sludge
Remove the flange and gently
clean the pipe from the sludge
Heating time increased
THE is covered with a layer
of sludge
Remove the flange and clean
the TEH
Supply voltage decreased
Contact power main operation
service
Fault
Hot water pressure
from EWH decreased.
Cold water pressure
keeps at the level.
How to fix
Remove the valve and clean it
in water
Possible cause
Clogged inlet safety valve
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