Family Aqua Condens 3.5 BIS
16
Code
Fault description
RESET
icon
Icon
75
SECOND HEATING SYSTEM
PROBE ABSENT
NO
YES
77
LOW TEMPERATURE THERMOSTAT (T)
NO
YES
78
DELIVERY/RETURN DIFFERENTIAL (T)
NO
YES
79
DELIVERY/RETURN DIFFERENTIAL (D)
YES
NO
80
SYSTEM FAULT (D)
YES
YES
81
SYSTEM FAULT (T)
NO
YES
82
SYSTEM FAULT (D)
YES
YES
83
SYSTEM FAULT (T)
NO
YES
89
STOP SIGNAL SENT TO THE OT DEVICES
-
-
91 (-)
PRIMARY HEAT EXCHANGER CLEANING (-)
NO
YES
J0
CONNECTION FAILURE BETWEEN
INTERFACE AND MAIN CARD
-
-
J1
CONNECTION FAILURE WITH THE
REMOTE CONTROL PANEL
-
-
(D) Definitive
(T) Temporary. In this operating status, the boiler attempts to resolve
the fault situation autonomously
(°) See the NOTE on the previous page
(**) If these two errors arise, check the pressure shown on the hydrom-
eter.
If the pressure is insufficient (< 0.4 bar - red field), perform the fill
-
ing operations described in the “Filling and draining the systems”
chapter.
If the system pressure is sufficient (> 0.6 bar - light blue field), the
fault is due to a lack of circulating water. Contact the Technical
Assistance Centre.
(-) Contact the Technical Assistance Centre.
4.7
Temporary switch-off
In the event of a temporary absence, weekends, short journeys and
so on: press
. The display will visualise the words “ENERGY FOR
LIFE” and the anti-freeze icon.
In this way (leaving the electricity and fuel supplies enabled),
the boiler is protected by the following systems:
- Antifreeze: when the boiler water temperature falls to 7°C, the cir-
culator is activated and, if necessary, also the burner (at the mini-
mum output) to bring the water temperature back within the safety
values (35°C). The
icon will flash on the display, indicating that
the anti-freeze function is active.
- Circulator anti-locking: an operation cycle is activated every 24 h.
4.8
Switching off for long periods
The long term non use of the Family Aqua Condens 3.5 BIS boiler
causes the execution of the following operations:
- press
. The wording “ENERGY FOR LIFE” and the antifreeze
icon are displayed
- set the system's main switch to "off"
- turn off the fuel and water taps of the heating and domestic hot
water system.
In this case, the anti-freeze and anti-blocking systems are de-
activated.
Drain the heating and domestic water system if there is any risk
of freezing.
4.9
Maintenance
Periodic maintenance is essential to the safety, efficiency and lifetime
of the boiler. The appliance must be systematically controlled at reg-
ular intervals to make sure it works correctly and efficiently and con-
forms to legislative provisions in force.
It allows for the reduction of consumption, polluting emissions and
keeping the product reliable over time.
Before starting maintenance operations:
- Perform the analysis of the combustion products to check the boil-
er operation status then cut the electrical supply by turning off the
system's general switch
- Close the fuel and water taps of the heating and domestic hot wa-
ter system.
After performing the necessary maintenance operations, the
original adjustments must be restored and the combustion
product analysis must be performed to check the correct oper-
ation.
4.10
Adjustments
The Family Aqua Condens 3.5 BIS boiler is supplied for operation
with Methane gas (G20) and is factory set as shown on the rating
plate.
If adjustments have to be redone, for example after extraordinary
maintenance, after the gas valve replacement or after conversion
from methane gas to LPG and vice versa, the following procedures
must be followed.
The maximum heating electrical value adjustment, the mini-
mum and maximum electrical heating, must be carried out in
the sequence indicated and exclusively by the Riello Technical
Assistance Service.
