Gree Ultra Heat GMV-V72W/A-F, Service Manual

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Ultra Heat GMV VRF Technical Service Manual MAINTENANCE
102
Content
symbol
Division
symbol
6 7 8 9 A H
In
d
o
o
r
L No main IDU
Power supply
is insufficient
For single
control over
multiple units,
number of IDU
is inconsistent
For single
control over
multiple units,
IDU series is
inconsistent
Alarm due to
bad air quality
d
Malfunction of
exit-tube
temperature
sensor
Malfunction of
humidity
sensor
Malfunction of
water
temperature
sensor
Malfunction of
jumper cap
Web address
of IDU is
abnormal
PCB of wired
controller is
abnormal
O
u
td
o
o
r
E
F
Malfunction of
discharge
temperature
sensor of
compressor 2
Malfunction of
discharge
temperature
sensor of
compressor 3
Limited
frequency
reduction for
AC current
protection
Limited
frequency
reduction for
discharge
temperature
protection
Limited
frequency
reduction for
high pressure
protection
Limited
frequency
reduction for
low pressure
protection
J
Over-current
protection for
compressor 6
Gas-mixing
protection of
4-way valve
High pressure
ratio protection
of system
Low pressure
ratio protection
of system
Protection
because of
abnormal
pressure
b
Malfunction of
inlet tube
temperature
sensor of
vapor liquid
separator
Malfunction of
exit tube
temperature
sensor of
vapor liquid
separator
Malfunction of
outdoor
humidity
sensor
Malfunction of
gas
temperature
sensor of heat
exchanger
Malfunction of
oil-return
temperature
sensor 1
Clock of
system is
abnormal
P
Drive IPM
module
protection of
compressor
Malfunction of
drive
temperature
sensor of
compressor
Drive IPM high
temperature
protection of
compressor
Desynchronizi
ng protection
of inverter
compressor
Malfunction of
drive storage
chip of
compressor
High-voltage
protection of
compressor’s
drive DC bus
bar
H
Drive IPM
module
protection of
fan
Malfunction of
drive
temperature
sensor of fan
Drive IPM high
temperature
protection of
fan
Desynchronizi
ng protection
of inverter fan
Malfunction of
drive storage
chip of inverter
outdoor fan
High-voltage
protection of
fan’s drive DC
bus bar
Deb
u
g
g
in
g
U
Alarm because
valve is
abnormal
Malfunction of
pipeline for
IDU
Malfunction of
pipeline for
ODU
C
Alarm because
ODU quantity
is inconsistent
Abnormal
communicatio
n of converter
Emergency
status of
compressor
Emergency
status of fan
Emergency
status of
module
Rated
capacity is too
high
Sta
tu
s
A
Heat pump
function
setting
Quiet mode
setting
Vacuum pump
mode
Heating
n
Inquiry of
malfunction
Inquiry of
parameters
Inquiry of
project code of
IDU
Check quantity
of IDU on line
Heat pump
unit
Heating only
unit
Content
symbol
Division
symbol C L E F J P
In
d
o
o
r
L
IDU is not
matching with
outdoor unit
Malfunction of
water flow
switch
Rotation speed
of EC DC water
pump is
abnormal
Malfunction of
shunt valve
setting
Setting of
functional DIP
switch code is
wrong
Zero-crossing
malfunction of
PG motor