95 / GB
2
P5
Second thermostat of resistance (manual)
Check main circulation activation
- Check water flow by par 17.11.3
- Check safety thermostat status and wirings
2
P6
Night tariff contact not present
- Par 17.5.2 = HP-HC or HP-HC 40°C and par. 17.1.0 = Absent
2
P7
Precirculation Error
Water flow not detected for 5 times during pre-circulation
2
P9
SG ready input configuration not completed
Just one of par 17.1.0 or 17.1.1 is defined as SG Ready input
(*) BUS power supply overload
A BUS power supply overload error may occur due to the con-
nection of three or more devices within the installed system.
Devices which may overload the BUS network include:
- 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 inside the equipment connected to the
system (except the Tank) to OFF, as illustrated in the figure.
1
ON
OFF
2
microswitch
(**) Table of inverter error codes
in case of an external unit error (HP 939 error code), read the
parameter 17.11.1 and refer to the following table to identify
the cause of the error.
EXTERNAL UNIT ERROR LIST
TDM
ERROR
DESCRIPTION
RESET
HP
POWER
OFF
SERVICE
RESET
905
HP CMP Mismatch Error
x
906
HP FAN Mismatch Error
x
907
HP V4W Mismatch Error
x
908
HP EXV Mismatch Error
x
909
HP Zero Fan Speed
x
947
HP V4W Error
x
912
HP V4W Error Service
x
948
HP TD Error
--
--
949
HP TS Error
--
--
911
HP TE Error
--
--
952
HP TO Error
--
--
913
HP LWT Error
--
--
914
HP TR Error
--
--
916
HP TEO Error
--
--
915
HP COMM TDM Error
--
--
953
HP Compressor Heater
Mismatch
--
--
954
HP Base Panel Heater Mismatch
--
--
956
HP Compressor model
mismatch
--
--
957
HP Fan model mismatch
--
--
922
HP Freeze Error
x
917
HP Freeze Service
--
x
951
HP HIGH TD Error
x
950
HP HIGH TD Service
--
x
918
HP Pump Down Error
--
--
919
HP HIGH SDT Error
x
931
HP INVERTER Error
--
--