MCQUAY Service Guide Book
Diagnosis
63
Netware 3C / SLM 9 – Inverter Y Models (Except
5WMY-J/JR)
Error
Code
Faulty Indication
Error
Code
Faulty Indication
00
Normal
H9
Outdoor air thermistor short/open
A1
Indoor PCB error
J1
Pressure sensor error
A3
Drain pump fault
J3
Compressor discharge pipe thermistor
short/open/misplaced
A5
Antifreeze(Cooling) / Heat exchanger
overheat(Heating)
J5
Suction pipe thermistor short/open
A6
Indoor fan motor fault
J6
Outdoor heat exchanger thermistor
short/open
AH
Electrical air cleaner fault
J7
Sub cooling heat exchanger thermistor
short/open
C4
Indoor heat exchanger (1) thermistor
short/open
J8
Liquid pipe thermistor short/open
C5
Indoor heat exchanger (2) thermistor
short/open
J9
Gas pipe thermistor short/open
C7
Louver limit switch error
L1
Inverter outdoor PCB error
C9
Indoor room thermistor short/open
L3
Outdoor control box overheat
E1
Outdoor PCB error
L4
Heat sink overheat
E3
High pressure protection
L5
IPM error/IGBT error
E4
Low pressure protection
L8
Electrical thermal switch
E5
Compressor motor lock/compressor
overloaded
L9
Stall prevention
E6
Compressor start-up error
LC
Communication error (outdoor PCB &
inverter PCB)
E7
Outdoor DC fan motor lock
P1
Open phase or voltage unbalance
E8
Ac input over current
P4
Heat sink thermistor short/open
E9
EXV error
PJ
Capacity setting error
EA
4 way valve error
U0
Insufficient gas
F3
Discharge pipe overheat
U2
DC voltage out of range
F6
Heat exchanger overheat
U4
Communication error
HO
Compressor sensor system error
U7
Communication error (outdoor PCB & IPM
PCB)
H3
High pressure switch error
UA
Installation error
H6
Compressor feedback detection error
UF
Piping & wiring installation mismatch/wrong
wiring/insufficient gas
H7
Fan motor overloaded/over current/sensor
fault
UH
Anti freeze (other rooms)
H8
AC current sensor error
Содержание 5MDS
Страница 1: ...SERVICE GUIDE BOOK...
Страница 84: ...2012 McQuay International www mcquayup com...