Riello Caldariello 24 KIS C Manuel D'installation Et D'utilisation page 10

ENGLISH
5A LIGHT SIGNALS AND FAULTS
The control panel has two led that indicate the boiler operating status:
Green led
Flashing
- Flashing with frequency 0.5 second on - 3.5 seconds off = boiler in standby,
there is no flame.
- Flashing with frequency 0.5 second on - 0.5 second off = temporary stop
of the appliance due to the following self-restoring faults:
- water pressure switch (standby time 10 minutes approximately)
- air pressure switch (standby time 10 minutes approximately)
- transitory waiting for ignition.
In this phase, the boiler waits for restoration of working conditions. If
after standby time, the boiler will not restore regular operation, stop will
be permanent and light signalling will be red.
- Fast flashing (frequency 0.1 sec. on; 0.1 sec. off; duration 0.5) input/
output function CTR (Environment Automatic Adjustment System).
By setting the heating water temperature selector in the zone marked by
symbols in bold type - temperature value from 55 to 65 °C - the CTR
self-adjusting system is activated: the boiler varies the delivery tempera-
ture according to the closing signal of the ambient thermostat. When the
temperature set with the heating water temperature selector is reached,
a 20 minutes count begins. If during this period the ambient thermostat
still requests heat, the value of the set temperature automatically
increases by 5 °C.
When the new value is reached, other 20 minutes count begins.
If during this period the ambient thermostat still requests heat, the value
of the set temperature automatically increases by 5 °C.
This new temperature value is the result of the temperature set manually
with the heating water temperature selector and the increase of +10 °C
of the CTR function.
After the second increasing cycle, the temperature value is restored to
the value set by the user and the above mentioned cycle is repeated
until the ambient thermostat request is fulfilled.
Fixed green
if there is flame, the boiler works regularly.
Red led
The red led indicates a boiler lockout due to the following faults:
Fixed
- flame lockout
- air pressure switch intervention (after transient phase)
- NTC heating probe
- ACF electronic fault alarms
- water pressure switch (after transient phase)
Flashing
- limit thermostat intervention
Green flashing led + red flashing led
When the LEDs flash simultaneously it is a domestic water probe alarm
The boiler works regularly, but stability of the domestic hot water tempera-
ture is not guaranteed.
Contact the Technical Assistance Service for a control.
When the LEDs flash alternatively it means that there is a calibration pro-
cedure in progress.
To restart operation, place the mode selector on "
seconds and take it then to the desired position: summer or winter mode.
If the boiler does not restore normal operation, contact the Technical
Assistance Service.
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" OFF (fig. 4), wait 5-6