Switching Off - Beretta MYNUTE GREEN 28 C.S.I. Manual De Instalacion Y Uso

Switching off

For short absences (weekends, brief journeys, etc.) turn the
function selector to " " OFF/RESET.
The digital display will look like fig. 25.
As the boiler remains powered with the gas tap open, it is protected
by the following systems:
- anti-freeze:
heating
the function starts if the temperature measured by the delivery
probe falls below 6°C. In this phase, a heat demand is generated
and the burner ignites at minimum power. This is maintained
until the temperature of the delivery water reaches 35°C.
domestic hot water (for R.S.I. only with connection to an
external water tank with probe)
the function starts if the temperature measured by the domestic
hot water probe (water tank probe for R.S.I. models) falls below
4°C. In this phase, a heat demand is generated and the burner
ignites at minimum power. This is maintained until the temperature
of the delivery water reaches 55°C for C.S.I. - 35°C for R.S.I..
During the anti-freeze phase, AF flashes on the display (fig.
26).
26
- circulator anti-block: if the boiler remains inactive, the circulator
performs a 30-second operating cycle every 24 hours.
If the boiler is planned not to be used for a long period, proceed as
follows:
- move the function selector to OFF-RESET
- turn the main system switch to "off"
- close the fuel and the heating and hot water taps (for C.S.I.).
In this case, the anti-freeze and anti-block systems are disabled.
Drain the heating and hot water system (for C.S.I.) if there is dan-
ger of freezing.
closed
position
27
CODE DESCRIPTION OF ALARM
AL10 IGNITION ATTEMPTS FINISHED
(NO FLAME/CONDENSATE PRESENT)
AL20 LIMIT THERMOSTAT FAULT
AL21 LOW TEMPERATURE THERMOSTAT/CONDENSATE PUMP SAFETY DEVICE FAULT
AL60 DOMESTIC HOT WATER PROBE FAULT (C.S.I.)
AL60 WATER TANK PROBE FAULT (R.S.I.)
AL71 DELIVERY PROBE FAULT (OPEN/SHORT CIRCUIT)
AL73 RETURN PROBE FAULT (OPEN/SHORT CIRCUIT)
AL28 RETURN/DELIVERY PROBE DIFFERENTIAL FAULT
AL26 RETURN OVER TEMPERATURE
AL79 DELIVERY OVER TEMPERATURE/ RETURN-DELIVERY PROBE DIFFERENTIAL FAULT
AL41 SYSTEM WATER PRESSURE LOW
AL40 SYSTEM WATER PRESSURE LOW (AFTER 10 MINUTES)
AL34 FAN TACHO FAULT
AL52 GENERIC ELECTRONIC FAULT
AL55 NO BOILER MODE CONFIGURATION FAULT (CORRESPONDING JUMPER ABSENT)
Indicator LEDs and faults
Green indicator LED
Off = boiler on stand-by, no flame
On = burner on, the boiler works regularly.
Red indicator LED
Stop: just the fault code flashes on the digital display.
Block: the red indicator LED lights up and the fault code flashes
on the digital display.
The fault code is not displayed in the OFF/RESET ( ) mode. To
display it, move the function selector to
analysis and the anti-freeze phase, instead, it is displayed.
To reset the boiler, turn the function selector to " " (OFF/RESET)
and then move it to be required position: summer, winter or winter
with preheating (for C.S.I.) (fig. 17).
If the boiler still doesn't work, call in the local Technical Service
Centre.
15
or . During combustion
STATUS
BLOCK
BLOCK
BLOCK
SEE DEDICATED SECTION
BLOCK
STOP
STOP
BLOCK
BLOCK
BLOCK
STOP
BLOCK
BLOCK
BLOCK
BLOCK