Riello NexSirius 006 M Instructions For The Installer And The Technical Service Centre page 75

Code Item
17 Outdoor air sensor
18 G-Tr short circuit protection
20 Position Detection Circuit Error
21 Current Sensor Error
Outdoor Heat Exchange Sensor (TE)/
22
(TS)
23 Discharge Temperature Sensor (TD)
24 Outdoor Fan Error
26 Other Outdoor Error
27 Compressor Lock
28 Discharge Temperature Error
29 Compressor Breakdown
30 Other inverter board error
31 High Temperature Release
The parameters displayed in grey are not available.
EN
Cause
Value out of range
Inverter over-current protective
circuit operates
Short circuit voltage protection of
main circuit operates
Position detection circuit operates
when the compressor is operating
despite removal of 3P connector
Current detection circuit error:
• Current value at AC side is high
when compressor is OFF
• Phase of power supply is missing
Value out of range
Value out of range
Defective detection of position
Operation of outdoor fan over-
current protection circuit
Outdoor fan locked
Defective cabling of compressor
Compressor fault
Defective cabling of compressor
Compressor fault
Discharge Temperature Error
Deviate from the normal for the
compressor
75 75
Effect
Outdoor temperature not available
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
Outdoor unit stops
Domestic water valve OFF if code
127 = 1
NExSIRIUS NExSIRIUS
Solution
Check Outdoor unit board for cabling
error
Replace Outdoor unit board
Check Outdoor unit board
Check 3 phase power voltage and
cables
Check sensor, wiring and electrical
connections
Check sensor, wiring and electrical
connections
Check outdoor fan
Check Outdoor unit board
Check 3 phase power voltage and
cables
Replace compressor
Check 3 phase power voltage and
cables
Replace compressor
Check for refrigerant gas leaks
Check PMV operation
Check TD sensor operation
Check power supply +/-10%
Overload operation of refrigerating
cycle
Check current detection circuit at
AC side
Check outdoor temperature sensor TE
in the Outdoor unit
Check Outdoor unit board