Tesy GCR 502712 - Инструкция по эксплуатации - Страница 8

8

EN

VI. 

OPERATION.

1. 

Switch on the electric water heater

Before initial start of the appliance, please make sure that the water heater has 

been correctly connected to the electrical network and that it is filled up with 

water. Switching on the water heater is done through the device incorporated in 

the installation, which is described in sub-item 3.2. of section IV, or by inserting 

the plug into an electrical socket (for models with cord with a plug).

2. 

Description of the control panel of the appliance

3

2

1

5

4

The unit’s control panel displays information about the operation and condition of 

the water heater.

Designation of buttons and elements:

❶

 - 

"Stand by" / "ON" button";

❷

 - 

Operating mode selection button;

❸

 - 

Indicators of set manual control mode;    

❹

 - 

Indicator of set  ECO  mode;

❺

 -

Indicator of a registered problem.

3. 

Device settings and control

•

Turning on the electronic control of the device

Press the 



 button to switch the appliance on.  The operating mode set is displayed 

on the control panel. Press the 



 button again to switch the electronic control off. The 

Stand By mode is activated and the unit automatically enters the Anti-freeze mode. The 



 button and button 

 

remain lit on the control panel.

•

Operating control mode

The 

 

button

selects the operating mode. Each time you press the button, a mode is 

selected in sequence as follows:

WARNING: The maximum number of showers depends on the capacity of your 

appliances and the method of installation.  (fig. 1.3 horizontal or vertical).

Manual control mode

In manual mode, the appliance works like an ordinary electric water heater. The 

amount of hot water is set as equivalent to the number of showers. 
The set amount of hot water and the current status of the appliance are indicated by 

indicator lights on the control panel.
The "shower" symbol gives you information about the amount of hot water that is 

already heated depending on the number of showers. On the control panel, the 

indicator light provides feedback on the selection made.
When the "shower" symbol is lit constantly, this means that the set amount of hot 

water has been reached, but when the "shower" symbol flashes, this indicates that the 

appliance is heating mode. 
When more than one of the set "showers" are not ready, the corresponding "shower" 

symbols blink one after the other constantly. This gives inforamtion about the set 

amount of hot water, as well as the amount reached at any given time, when they are 

lit continuously.

ECO mode

Attention!

 Your TESY electric water heater is of the highest energy class. The 

class of the appliance is guaranteed only when it operates in 

ECO

 mode “Eco 

Smart” due to the significant energy savings that are generated.

I

n the ECO modes the electric water heater develops its own algorithm of operation 

in order to guarantee energy saving, respectively to reduce your electricity bill, but to 

maintain your maximum comfort of use.
This operating mode is especially suitable if you have established habits regarding hot 

water consumption (for example, you shower at approximately the same time each day). 

To operate the water heater in the "Eco" mode, press the 



 button until the ECO light 

on the control panel appears. During the first week when the self-learning process of 

the appliance based on the habits of the household takes place, the water is heated to 

70 °C. After this period, the maximum temperature of water heating depends on the 

actual needs.

Operation principle: When the Eco mode is selected the appliance will learn your 

habits and develop a weekly program to provide you with the right amount of 

water at the right time, but also so that it generates energy savings and lowers your 

electricity bill. The principle of operation requires a self-learning period of one week, 

after which the Eco mode automatically reproduces the learned cycle of work and 

begins to accumulate energy savings without disturbing your comfort, calculated on 

the basis of your habits. The appliance monitors your habits and learns constantly.

If you change your habits frequently, the appliance could not come up with a 

completely accurate algorithm that guarantees your comfort and provides hot water 

exactly when you need it.

Note: When the power supply goes out, the appliance saves the Smart algorithm 

according to your habits for up to 45 minutes. 

If you need to heat the water to a maximum temperature once, with the ECO mode 

activated, select the maximum number of ''shower" symbol. With this change the ECO 

algorithm is kept. Upon returning to the ECO mode, the operation of the water heater 

continues based on the algorithm developed. 

•

"Аnti-freezing" function

The anti-freeze function is active in the Stand By mode.

If you intend not to use the water heater for a long time, protect its contents from 

freezing by pressing the 



 button to activate the "Anti-freeze" function, where by 

the water heater will maintain the water temperature at approximately 10 °C.

WARNING: The electrical power supply of the device should be switched on. The 

safety valve and the pipe connecting it to the device must be secured against 

freezingter.

•

FACTORY SETTINGS RESET function

To enable this function, the appliance must be in Stand-by mode. You can enable it 
by pressing and holding the 



and 



buttons for at least 10 seconds. During these 

10 seconds you should hear two sound signals. The first one is a test, all symbols on 

the display will be illuminated, and when you keep pressing the buttons you will hear 

the second signal which will indicate that you have restored the factory settings of 

the appliance.

WARNING: When you return to the factory settings, the smart algorithm is reset.

•

The "Anti-legionella" Function

The low temperature of the water in the water heater creates a favorable environment 

for the development of microorganisms, and in particular the Legionella bacterium, 

which can be extremely dangerous for the human body.

The Anti- Legionella / Disinfection Function is an innovative function and is 

automatically activated in order to protect the water heater from the development 

of bacteria in the hot water.

If the water in the water heater does not reach the temperature of 65 °C for 7 days, the 

anti-legionella function is activated. The water in the water heater is warmed to 65 °C 

and kept at this temperature for 60 minutes.

•

Problem log

When a problem is detected in the appliance, all symbols go out. The 

⚠

   symbol 

lights up on the panel and starts flashing. At the same time, the appliance heater 

switches off (the appliance stops heating) and the operating mode indication goes 

out. Different errors are encoded with different number of flashes of the symbol 

(flashes N times and goes out for 2 seconds).

Code of error 

/number of blinks/

Name of error

1

error 1

Sensor 1 – The lower sensor is switched off

2

error 2

Sensor 1 - The lower sensor is in short circuit

3

error 3

Sensor 1 – The upper sensor is switched off 

4

error 4

Sensor 1 - The upper sensor is in short circuit

5

error 5

Sensor 2 – The lower sensor is switched off

6

error 6

Sensor 2 - The lower sensor is in short circuit

7

error 7

Sensor 2 – The upper sensor is switched off 

8

error 8

Sensor 2 - The upper sensor is in short circuit

9

error 9

Error reading data from NFC

10

error 10

The water heater is turned on without any water present (H1)

11

error 11

The water heater is turned on without any water present (H2)

12

error 12

The water in the inlet tank does not heat up 

(H1)

13

error 13

The water in the outlet tank does not heat up 

(H2)

14

error 14

Water freezing is possible !

Note:

 If you see any of the above listed errors, please contact an authorized 

service centre. You can find a list of them in the warranty card.

VII. 

PERIODIC MAINTENANCE

In the conditions of normal use of the water heater, under the influence of high 

temperature, limestone (the so-called lime scale) deposits on the surface of the 

heating element. This worsens the heat exchange between the heating element 

and the water. The temperature on the surface of the heating element and around 

it increases. Specific noise can be heard – of boiling water. The thermoregulator 

begins to switch on and off more frequently. A “deceptive” activation of the thermal 

protection is possible. Due to these facts, the manufacturer recommends preventive 

maintenance of your water heater every two years by an authorized service centre 

or service facility, this service remaining at the customer’s expense. This preventive 

maintenance should include cleaning and examination of the anode protector (for 

water heaters with glass-ceramic coating), which has to be replaced with a new one, 

if necessary.

To clean the appliance, use a damp cloth. Do not use abrasive or solvent-containing 

detergents.

The manufacturer does not bear responsibility for any consequences arising 

from non-adherence to these instructions.

Instructions for protection of the environment

Old electric appliances contain valuable materials and must not be 

disposed of with the domestic waste! Please contribute actively for the 

protection of the resources and the environment and dispose of the 

appliance in the buy-back centres organized for this purpose (if such are 

available).