Ariston NIMBUS PLUS M NET Manual page 99

2 P4 First thermostat of resistance (auto)
2 P5 Second thermostat of resistance (manual)
2 P6 Night tariff contact not present
2 P7 Precirculation Error
2 P9 SG ready input configuration not completed
(*) BUS power supply overload
A BUS power supply overload error may occur due to the connection of three or more
devices within the installed system. Devices which may overload the BUS network in-
clude:
- Multizone module
- Solar pump assembly
- Module for instant production of domestic hot water
To avoid overloading the BUS power supply, set microswitch 1 on one of the P.C.B.s in-
side the equipment connected to the system (except the Tank) to OFF, as illustrated in
the figure.
EXTERNAL UNIT ERROR LIST
DESCRIPTION
906 HP FAN Mismatch Error
907 HP V4W Mismatch Error
908 HP EXV Mismatch Error
909 HP Zero Fan Speed
911 HP TE Error
912 HP V4W Error Service
913 HP LWT Error
914 HP TR Error
915 TDM Communication error
916 HP TEO Error
917 HP Freeze Service
918 Pump Down Error
919 HP HIGH SDT Error
922 HP Freeze Error
931 Errore inverter *
947 HP V4W Error
948 HP TD Error
949 HP TS Error
950 HP HIGH TD Service
950 HP HIGH TD Service
952 HP TO Error
953 HP Compressor Heater Mismatch
954 HP Base Panel Heater Mismatch
956 HP Compressor model mismatch
957 HP Fan model mismatch
960 HP EWT sensor Error
962 Defrost Energy
* Parameter 17.11.1 shows the last inverter error shown in the
table opposite «Inverter error list».
- Check main circulation activation
- Check water flow by par 17.11.3
- Check safety thermostat status and wirings
Check main circulation activation
- Check water flow by par 17.11.3
- Check safety thermostat status and wirings
- Par 17.5.2 = HP-HC or HP-HC 40°C and par. 17.1.0 = Absent
Water flow not detected for 5 times during pre-circulation
Just one of par 17.1.0 or 17.1.1 is defined as SG Ready input
RESET
x
x
x
x
-- --
x
-- --
-- --
-- --
-- --
-- x
-- --
x
x
-- --
x
-- --
-- --
-- x
-- x
-- --
-- --
-- --
-- --
-- --
-- --
-- --
ON
OFF
1 2
microswitch
99 / GB