Operating Faults And Reset; Temporary Shutdown; Preparing For Extended Periods Of Disuse - Riello MINI 17 LN NG Installation And User Manual

The switching on and off of the burner is managed in two modes:
- absolute: burner switching off threshold at 70°C
- correlated: burner switching off threshold when the setpoint of +4°C is
reached.
The switching back on point is the same for both modes and is the set-
point -1°C.
CHANGING THE DOMESTIC HOT WATER SETPOINT
- Pressing the "+" or "-" key it is possible to change the setpoint for the
domestic hot water. With the "+" key the value increases, with the "-"
key it decreases.
If there is a fault the water heater carries out a "STOP" (see section Op-
erating faults and reset).

4 5 Operating faults and reset

In the event of a fault, the displays summarised and described in the table
are shown.
Error type
Limit thermostat alarm
Air pressure switch fault
Burner thermostat alarm
Air pressure switch alarm
ACF alarm lockout module
ACF electronics fault alarm
parasite flame fault
Overtemperature fault
Domestic hot water NTC
Fault
Input NTC Fault
In the event of a transitory fault the appliance independently attempts a
reset of operations.
Fig. 33
Fig. 34
Transitory
Error code
Definitive
Definitive 02
Transitory 03
Definitive 04
Definitive 03
Definitive 01
Definitive 01
Transitory 11
88°C
Definitive
flashing
Transitory 06
Transitory 08
In the event of a permanent fault it is necessary to reset the normal oper-
ation of the appliance by pressing the ON - OFF/RESET (A) key.
This operation can be repeated a maximum of 2 times. If the problem is
not resolved, request help from the Technical Assistance Centre.
b
The system provides for the alarms to remain operational even in
the ON-OFF/RESET state. In this state they are not displayed how-
ever. In the event a lockout occurs when the function is OFF, to
reset it the water heater must be set to ON and then to OFF again.

4 6 Temporary shutdown

In case of temporary absences for weekends, short trips, etc.:
- press the ON-OFF/RESET (A) key
- turn the main system switch to "off".
A

4 7 Preparing for extended periods of disuse

If the appliance is not going to be used for a long period of time, the fol-
Icons
lowing operations should be carried out:
- press the ON-OFF/RESET (A) key
- switch the boiler OFF at the mains power switch
- shut-off the system's fuel and water taps.
b
Empty the system if there is a risk of freezing.
ENGLISH
Fig. 35
Fig. 36
Fig. 37
37