The heating mode can be switched on or off by pressing the O/I (MENU) button (3). The on-mode is
signalled by the pilot light between ▲ , ▼ buttons (1); the pilot light in the off-mode is turned off.
Heating can be switched on only if its operation is pre-set in the user menu; the rto item must be set to tEr, EtE, Prt, otP or ot-(P3.1 = 1 –
5).
♦ Switching the DHW heating on or off
The DHW heating mode can be switched on or off by pressing the O/I (ENTER) button (4). The on-mode is
signalled by the pilot light between ▲ , ▼ buttons (2); the pilot light is off if the DHW is in the off-mode.
The DHW heating can be switched on only if its operation has been pre-set in the service menu; the rtU item must be set to b_n or b_c (P3.3
= 1 or 2).
♦ Displaying the outdoor/room temperatures
To display any other operational variables (except for the heating water and DHWtemperatures), use the
(SELECT) button (5). If you press (or double press) it, the outdoor/room temperature display dialogue opens.
This dialogue is indicated by the IN/OUT °C pilot light.
In the case of sensor defect or absence, the numerical data become replaced with dashes: _ _ _ during disconnection or interruption of the
sensor or wiring, ¯ ¯ ¯ during short circuit of the sensor or wiring
The difference between displaying the room or outdoor temperature rests only in the location of the sensor. Shall the boiler operation be
controlled on the basis of its data, the respective mode must be selected in the user menu:
- for rto = EtE (P3.1 = 2) (integrated equitherm regulation) outdoor sensor must be used,
- for rto = Prt (P3.1 = 3) (integrated room thermostat) sensor in the room of reference must be used.
If the sensor is connected but the boiler operation is not controlled on the basis of its data, these data are used at least for protecting the
system against freezing.
♦ Displaying the heating system pressure
If you press (or double press) the (SELECT)button (5), the system pressure dialogue opens. This display
dialogue is indicated by the bar pilot light.
Minimum operation pressure of the system is 0.5 bar.
♦ Signal indication of the mass remote control (MRC)
The presence of the MRC signal is indicated by the HDO (MRC) pilot light. If it is turned on, it means that the
full boiler input is allowed.
Reduction of the boiler input by way of MRC signal can be set in the service menu by means of the Ph¯ (P4.4) item.
♦ Displaying the error messages
If you press (or double press) the (SELECT)button (5), the error message dialogue opens. This display
dialogue is indicated by the letter E in the first position of the digital display. If an error message is generated, it is
displayed automatically. To display any other variable, press buttons 1, 2 and 5.
If several simultaneous error messages occur, all of them are displayed (each for one roughly second): e.g.
E.02 – E.04 – E.05 – E.02 – E.04 – E.05 –...
E.00 no defect
E.01 reserve
E.02is low TOP water pressure in the heating system. Boiler operation is not possible in any mode.
Water pressure measured by analogous pressure sensor is below 0.5 bar.
Manual
View the manual for the Thermona THERM EL 15 here, for free. This manual comes under the category water heaters & boilers and has been rated by 1 people with an average of a 8.3. This manual is available in the following languages: English. Do you have a question about the Thermona THERM EL 15 or do you need help? Ask your question here
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