GMV Heat Recovery DC Inverter VRF
72
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Content
Content
Outdoor
PF
Malfunction of charging loop of
driven of compressor
PJ
Failure startup of inverter
compressor
PP
AC current protection of inverter
PU
AC input voltage of drive of inverter
H0 Malfunction of driving board of fan H1
Driving board of fan operates
abnormally
H2
Voltage protection of driving board
power of fan
H3
Reset protection of driving module
of fan
H4 Drive PFC protection of fan H5
Over-current protection of inverter
fan
H6 Drive IPM module protection of fan H7
Malfunction of drive temperature
sensor of fan
H8
Drive IPM high temperature
H9
Desynchronizing protection of
HA
Malfunction of drive storage chip of
inverter outdoor fan
HH
High-voltage protection of fan’s
drive DC bus bar
HC
Malfunction of current detection
HL
Low voltage protection of bus bar of
HE Phase-lacking of inverter fan HF
Malfunction of charging loop of fan
drive
Failure startup of inverter fan
AC current protection of inverter fan
HU
AC input voltage of drive of inverter
fan
G0 PV reversed connection protection
G1 PV anti-islanding protection G2 PV DC overcurrent protection
G3 PV power generation overload G4 PV leakage current protection
G5
Phase-lacking protection at power
grid side
G6 PV LVRT
G7 Grid over/underfrequency protection G8
Overcurrent protection at power
grid side
G9
Drive IPM module protection at
power grid side
GA
Low/high input voltage protection at
power grid side
GH Photovoltaic DC/DC protection GC
Photovoltaic DC hardware
GL
Grid side hardware overcurrent
protection
GE
High or low photovoltaic voltage
protection
GF
DC bus neutral-point potential
GJ
Grid side module high-temperature
GP
Grid side temperature sensor
protection
GU Charging circuit protection
Gb Grid side relay protection Gd Grid side current side protection
Gn Insulation resistance protection Gy Power protection (PV)
Debugging
U0
Preheat time of compressor is
insufficient
U2
Wrong setting of ODU’s capacity
code/jumper cap
U3
Power supply phase sequence
protection
U4 Refrigerant-lacking protection
U5
Wrong address for driving board of
compressor
U6 Alarm because valve is abnormal
U8 Malfunction of pipeline for IDU U9 Malfunction of pipeline for ODU
UC Setting of main IDU is succeeded UL
Emergency operation DIP switch
code of compressor is wrong
UE Charging of refrigerant is invalid UF
Identification malfunction of IDU of
mode exchanger
Ud
Drive board of grid-connection is
abnormal
Un
Communication malfunction
between the drive board of grid-
connection and the main board
Uy
PV module over-temperature
protection
C0
Communication malfunction
between IDU, ODU and IDU’s wired