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