Maintenance And Cleaning - TESY HPWH 2.1 260 U02 S Instrucciones De Uso Y Mantenimiento

If the unit was previously in stand-by, in case the ON/OFF status is changed from opened to closed, the unit remains
in stand-by.
A signal/warning in case of remote OFF signal (opened contact) is displayed. In such a way the customer can
understand why the unit is not working.
Only qualified persons should design and install ON/OFF system!
9.5. Electrical heater
9.5.1. E-heater turned ON or OFF condition 1:
when the unit is turned on, and the E-heater button on the control panel hasn't been turned on manually
When lower tank temperatureT2 becomes equal to "TS1 calc", compressor is turned OFF and if "TS1 calc" < TS1
1)
manual set value, e-heater will work according to the following logic:
ON: when upper tank temperature T3 ≤ TS1 manual value -3°C (Parameter 33, default 3℃), e-heater is turned ON;
OFF: when the upper tank water temperature T3 reaches the setting temperature TS1 manual value + 1°C.
ON: when the ambient temperature ≤ -10°C or > 44°C;
2)
OFF: when the ambient temperature ≥ -8°C or < 42°C.
3) ON: when there is high pressure or low-pressure protection for 3 times in 30 min;
OFF: when the third time pressure protection occurs, the error code will be displayed, and this protection cannot be
recovered unless powering off the supply. So, the E-heater keeps running to reach the setting temperature, then it is switched
off.
4) ON: when in defrosting (only if the parameter 20 is set to 1=on) or disinfection;
OFF: when exit defrosting or disinfection.
9.5.2. E-heater turned ON or OFF condition 2:
when the unit is turned on, and the E-heater button on the control panel has been turned on manually
1) ON: Compressor runtime exceeds the E-heater delay time (parameter 3), and the upper tank water temperature T3
≤ TS1 manual - 3°C;
OFF: upper tank water temperature T3 ≥ TS1 manual + 1°C.
9.5.3. E-heater turned ON or OFF condition 3:
when the unit is turned off
1) ON: if the E-heater button on the control panel has been turned on manually when the unit is at OFF status, the E-
heater will work until the tank water T3 reaches the setting temperature TS2;
OFF: The E-heater button on the control panel has been turned off manually or the tank water T3 reaches the setting
temperature TS2.
ON: lower tank water temperature T2 ≤ 5°C (tank water frozen protection);
2)
OFF: lower tank water temperature T2 ≥ 10°C or the unit is turned on.

10. MAINTENANCE AND CLEANING.

WARNING! Any equipment repair must be performed by qualified personnel. Improper repairs can put
the user in serious danger. If your equipment needs to be repaired, please contact the technical
assistance service.
WARNING! Before attempting any maintenance operation, make sure that the equipment is not and
cannot be accidentally connected to the power supply. Therefore, disconnect the equipment from the
mains power supply before carrying out any maintenance or cleaning activities.
10.1. Resetting of safety thermostat 27 (Fig.14)
The device is equipped with a safety thermostat. When manually reset, the equipment is tripped in case of over-heating.
In order to reset the protection, it is necessary to:
•
Disconnect the device from the mains power supply;
•
Remove the plastic cover 50 by undoing the appropriate locking screws 53 (Fig. 14);
•
Manually reset the safety thermostat 27 (Fig. 14).
•
Reassemble the upper cover that was previously removed
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