GMV DC Inverter VRF
69
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Content
Content
Indoor
oA
Drive IPM high temperature protection of
ob
Malfunction of drive temperature sensor of
oC Malfunction of charging loop of IDU o0 Other malfunction of drive
Outdoor
Discharge low-temperature protection
E4
High discharge temperature protection of
compressor
Ed Drive IPM low temperature protection
Main board of ODU is poor
Malfunction of high-pressure sensor
F3 Malfunction of low-pressure sensor F5
Malfunction of discharge temperature sensor
of compressor 1
F6
Malfunction of discharge temperature
F7
Malfunction of discharge te
mperature sensor
of compressor 3
F8
Malfunction of discharge temperature
F9
Malfunction of discharge temperature sensor
FA
Malfunction of discharge temperature
FC Current sensor of compressor 2 is abnormal
FL
Current sensor of compressor 3 is
FE Current sensor of compressor 4 is abnormal
FF
Current sensor of compressor 5 is
FJ Current sensor of compressor 6 is abnormal
FP Malfunction of DC motor FU
Malfunction of casing top temperature sensor
of compressor 1
Fb
Malfunction of casing top temperature
Fd
Malfunction of exit tube temperature sensor
Fn
Malfunction of inlet tube temperature
J0
Protection for other modules
Over-current protection of compressor 1
Over-current protection of compressor 2
J3 Over-current protection of compressor 3 J4 Over-current protection of compressor 4
Over-current protection of compressor 5
Over-current protection of compressor 6
Gas-mixing protection of 4-way valve
High pressure ratio protection of system
J9 Low pressure ratio protection of system JA Protection because of abnormal pressure
Water flow switch protection
Protection because high pressure is too low
Oil-return pipe is blocked
Oil-return pipe is leaking
b1
Malfunction of outdoor ambient
b2
M
alfunction of defrosting temperature sensor
1
b3
Malfunction of defrosting temperature
b4
Malfunction of liquid outlet temperature
b5
Malfunction of gas outlet temperature
sensor of sub-cooler
b6
Malfunction of inlet tube temperature sensor
of vapor liquid separator
b7
Malfunction of exit tube temperature
sensor of vapor liquid separator
b8 Malfunction of outdoor humidity sensor
b9
Malfunction of gas temperature sensor of
heat exchanger
bA
Malfunction of oil-return temperature sensor
bH Clock of system is abnormal bE
Malfunction of inlet tube temperature sensor
bF
Malfunction of outlet tube temperature
sensor of condenser
bJ
High-pressure sensor and low-pressure
sensor are connected reversely
bP
Malfunction of temperature sensor of
bU
Malfunction of temperature sensor of oil
bb
Malfunction of temperature sensor of oil
return 4
bd
Malfunction of gas inlet temperature sensor
of sub-cooler
bn
Malfunction of liquid inlet temperature
P0 Malfunction of driving board of compressor
P1
Driving board of compressor operates
P2
Voltage protection of driving board power of