Normal operation
34
6
5. If the circulator is still locked, reactivate the automatic un-
locking function of the circulator (a further 3 minutes) by
power cycling the boiler.
6. At the end of the above operations, open the gas tap.
7. To switch the boiler to the heating operating mode, press
the
key; the fixed
symbol will appear on the dis-
play, indicating that the function has been activated.
8. When the room thermostat contact or the remote control
enable is closed, the burner ignition will start.
9. In case of lack of flame, the board repeats the ignition opera-
tions again after the post-ventilation (20 seconds).
10. It may be necessary to repeat the ignition operation sever-
al times to remove any air in the gas pipe. Before repeating
the operation, wait about 5 seconds from the last ignition
attempt and unlock the boiler from error code E01 by press-
ing the reset key.
11. Check the system pressure. If a decrease is observed, open
the filling tap again until the pressure reaches 1,5 bar. After
the operation, close the filling tap again.
5.8
SWITCHING OFF
To switch off the unit, select the OFF mode using the
key (Figure 6.1
p. 34). In this way the appliance is in standby
mode (
symbol appears on the display), ONLY the antifreeze
function (system water) and the boiler pump anti-lock function
remain active.
As it is harmful to the appliance, it is essential to avoid
switching off the appliance by removing the power
supply to the external module.
For the antifreeze and pump anti-lock functions to be
active, the boiler must be left powered.
5.9
PROLONGED PERIODS OF INACTIVITY
To switch off the unit, select the OFF mode using the
key
(Figure 6.1
p. 34). In this way the appliance is in standby mode
(
symbol appears on the display).
Switch off the power using the main switch, outside the boiler,
and close the gas tap upstream of the appliance.
By removing the power supply, the automatic anti-
freeze and pump anti-lock functions will be disabled.
If it is expected that during the period of inactivity
the external temperature may fall below zero, it is
therefore advisable NOT to cut off the electrical and
gas supply to the appliance.
6
NORMAL OPERATION
This section is for the end user.
The use of the device by the end user is only permitted
after the Robur authorised TAC has completed the
first start-up.
Figure 6.1
External module control panel
1
Heating temperature adjustment keys
2
INFO key: press once to view the temperatures and other informations - hold for 5 seconds, in off operating mode, to view the last 5 faults
3
Operating mode selection key: heating only / OFF
4
RESET key: faults reset - chimney sweep function activation (hold for 7 seconds)
5
Parameter value adjustment keys / hold the keys at the same time for 5 seconds to activate display backlighting for 10 minutes
6
Display
5
1
6
2
3
4