Riello NexSirius 006 M Instructions For The Installer And The Technical Service Centre page 72

NExSIRIUS NExSIRIUS
Code Item
Temperature/humidity sensor of user
2
interface in zone 1
3 TWB
4 TC
Domestic hot water temperature
5
sensor
Communication with user interface
6 (conneted to W-C-G-Y terminal
blocks)
Communication with additional user
7 interface (connected to Rc-Rh-G2-Y2
terminal blocks) in zone 1
8 Flow switch
9 Flow switch
10 EEProm
11 Communication Master - Slave
Communication with additional user
12 interface (connected to Rc-Rh-G2-Y2
terminal blocks) in zone 2
13 System configuration
14 HV Communication with CDU
15 LWT
16 Zone control
34 EH temperature warning
LOW domestic hot water temperature
*
warning
EN
Cause
Value out of range + Code 105.0 =
1 or 4
Value out of range
Value out of range
Value out of range + Code 133 = 1 or 2
Communication lost
Communication lost + Code 105.0 = 1
Water pump is OFF
Flowswitch detects flow
Water pump is ON
Flowswitch detects no flow
EEProm is corrupt
Communication lost + Code 100 = 2
Communication lost + Code 105.0 = 1
Code 100 = 1 + 1 Communication with
slave board is detected .
Communication lost
Value out of range
Code 100=1 +
Code 105.0=2
Code 100=2 +
Code 105.0=2 +
Code 105.1 = 2 o
Code 100=2 +
Code 105.0=4 +
Code 105.1 = 4
Backup heater is active + TWB does
not increase by 1 °C every 30 min
Code 133 = 1 or 2 + Domestic hot
water priority = 1 + Booster heater
schedule OFF + code 1.5 = 0
72 72
Effect
Room temperature/humidity is not
available
Related functions are not available
Backup heaters are OFF
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Backup heaters are OFF
Disinfection function not performed
No communication between unit
and interface
Unit runs with values stored in
memory
Room temperature and humidity are
not available if code 105.0 = 1 or 4 or
105.1 = 1 or 4
No communication between unit
and interface
Room temperature and humidity are
not available in zone 1
Unit runs with values stored in
memory
Outdoor unit, backup heaters,
domestic water valve, water pump:
OFF
Outdoor unit, backup heaters,
domestic water valve, water pump:
OFF
Entire system stops
Entire system stops
No communication between unit
and interface
Room temperature and humidity are
not available in zone 2
Unit runs with values stored in
memory
Entire system stops
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Entire system stops
No effect on system operation
Domestic water tank electric heater
icon will flash on the user
interface screen
Solution
Check user interface wiring and
electrical connections
Check sensor, wiring and electrical
connections
Check sensor, wiring and electrical
connections
Check sensor, wiring and electrical
connections
Check wiring and connections
Check wiring and connections
Check setting of code 107.1
Check flowswitch
Check setting of code 107.0
Check flowswitch, wiring and
electrical connections
Check floor heating thermal cut off if
connected
If reset is needed, press the red
button and check climatic curve
settings (codes 112 to 118)
Check settings of codes 100, 103, 105,
106, 107
If settings are correct, contact service
Check wiring and connections
Check user interface wiring and
electrical connections
2-zone kit is installed
Set code 100 = 2
Check sensor, wiring and electrical
connections
Change setting of code 105
Check backup heater operation,
wiring and electrical connections.
Domestic hot water temperature is
cold and schedule prevents booster
heater activation
User can activate booster heater
by setting code 1.5 = 1 (termporary
activation) or by enabling it in the
schedule