Operating instructions
Troubleshooting
Operating instructions ecoTEC plus 0020116701_00 23
7
7.2 Detecting and rectifying malfunctions
If problems occur whilst operating your boiler, you can
carry out the following self-checks:
Problem Possible cause Solution
No hot water, heating stays
cold;
Boiler does not start
Building gas isolator cock closed
> Open building gas isolator cock (¬ Sec-
tion 5.1.1)
Building power supply switched off > Switch on building power supply
On/off switch on boiler switched off
> Switch on the on/off switch on the
boiler(¬ Section 5.1.2)
The heating flow temperature is set too low or in the
"Heating off" position (¬ Section 5.6.2) and/or the
hot water temperature is too low
> Set the heating flow temperature to the
desired temperature (¬ Section 5.2) and/or
set the hot water temperature to the desired
temperature (¬ Section 5.3.1 and 5.4)
Filling pressure of the heating system too low
> Top up the heating system with water
(¬ Section 5.1.4)
Air in the heating system
> Purge the radiators.
> If the problem occurs again:
Contact your heating engineer
Ignition malfunction
> Press the reset button
> If the problem occurs again:
Contact your competent person (¬ Sec-
tion 7.4)
DHW mode without any prob-
lems;
Heating does not start:
No heating demand via the controller
> Check the timer programme on the control-
ler and correct it if necessary.
> Check the room temperature and, if
required, correct the target room tempera-
ture
(¬Section5.5; ¬Controller operating
instructions).
7.1 Detecting and rectifying malfunctions
> If, after checking the points mentioned in Tab. 7.1, your
boiler still shows signs of a fault, contact your approved
competent person to troubleshoot the problem.
7.3 Rectifying a water shortage
0,7bar
7.2 Display of the filling pressure for the heating system is too
low
If the filling pressure for the heating system falls below
0.08MPa (0.8 bar), the right-hand bar display and the cur-
rent filling pressure flash in the display.