Manual Thermona THERM EL 15 (page 18 of 37) (English)

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♦ 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 is a defect of one of the power relay contacts.

Boiler operation is not possible in any mode.

E.02 is 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.

E.03 is a disconnection of the blocking element 2.

Boiler operation is not possible in any mode.

E.04 is a defect on NTC sensor for the TOP heating water temperature.

Boiler operation is not possible in any mode.

When the respective value is displayed, the lower dashes ( _ _ _ ) are displayed in the case of disconnection or

interruption of the sensor or its wiring, the upper dashes ( ¯ ¯ ¯ ) if there is a short circuit on the sensor or its

wiring.

E.05 is a defect of NTC sensor for DHW temperature. The boiler operation in the heating mode is possible,

DHW heating is not possible in the b_c (storage tank with sensor) mode and it is possible in the b_n (storage

tank with thermostat) mode. For further details see the rtU parameter for the operation of the DHW heating in

the service menu.

If the respective temperature setting is selected, lower dashes (_ _ _) are displayed if the sensor or wiring have

been disconnected or interrupted, upper dashes ( ¯ ¯ ¯ ) are displayed for short circuit on the sensor or wiring.

E.06 defect – emergency thermostat of TOP heating water temperature.

Boiler operation is not possible (only after

a manual reset!).

E.07 is a defect of the NTC sensor for outdoor/room temperature. Boiler operation in the heating mode is

possible. If, however, the EtE heating mode (equitherm regulation) or Prt (integrated room thermostat) are

selected, the boiler automatically switches to the boiler thermostat mode (outlet water temperature control

according to a value set by buttons 1). DHW heating is possible in any of the modes.

If a respective display is selected, the lower dashes ( _ _ _ ) are displayed if the sensor or wiring have become

disconnected or interrupted, upper dashes ( ¯ ¯ ¯ ) stand for short circuit on the sensor or wiring.

E.08 reserve

E.09 is a defect of the TOP heating water pressure sensor – analogous sensor.

Boiler operation is not possible in any

of the modes.

E.10 is a defect of the communication between boilers connected in a cascade which has been detected by the

master boiler. To display the details about this defect, press button 5. Addresses of all boilers are alternately

displayed (each for the time of approximately 1 second) which do not communicate with the master boiler:

E.10 – c.04 – c.05 – E.10 – c.04 – c.05 – ...

E.11 is a defect of communication between boilers connected in a cascade which has been detected by one of

the slave boilers.

I Have an EL15 and cannot see how to connect a 3 way motorised valve. Manual shows position on diagram but how is connection physically made? Please help Submitted on 28-9-2022 at 18:47
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Thermona THERM EL 15 Manual

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