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

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Ultra Heat GMV VRF Technical Service Manual MAINTENANCE
104
O
u
td
o
o
r
E
Outdoor ambient
temperature is
beyond normal
range
F
Malfunction of
casing top
temperature sensor
of compressor 1
Malfunction of
casing top
temperature
sensor of
compressor 2
Malfunction of exit
tube temperature
sensor of mode
exchanger
Malfunction of
inlet tube
temperature
sensor of mode
exchanger
J
b
Malfunction of
temperature sensor
of oil return 3
Malfunction of
temperature
sensor of oil
return 4
P
AC input voltage of
drive of inverter
compressor
H
AC input voltage of
drive of inverter fan
Deb
u
g
g
in
g
U
C
Communication
malfunction
between IDU and
the receiving lamp
Overflow
distribution of IP
address
Communication
malfunction
between mode
exchanger and
ODU
Malfunction of
network for IDU
and ODU of
mode exchanger
Communication
malfunction of
mode exchanger
Sta
tu
s
A
Long-distance
emergency stop
Emergency stop
of operation
Limit operation Child lock status Shielding status
n
Eliminate the
long-distance
shielding command
of IDU
Bar code inquiry
Length
modification of
connection pipe
of ODU
For example, when E4 is displayed on the ODU, find line E and column 4 in the above tables. The
fault is shown in the intersection of the line and column: High exhaust temperature protection.
2 ODU LEDS TABLE
On the master ODU AP7, there are three LEDS and the flashing meaning is:
Flicker
Times
Green Red Yellow
1 Drive board Outdoor unit is always at ON status Fan ON
2 Reservation Reservation Compressor ON
3 Reservation Oil return IPM Overcurrent for fan
4 PC monitor Defrosting IPM Overcurrent for compressor
5 Indoor unit 1 Limited frequency reduction for IPM temperature protection Fan IPM protection
6 Indoor unit 2 Limited frequency reduction for PFC temperature protection Compressor IPM protection
7 Indoor unit 3 Limited frequency reduction for AC current protection PFC overcurrent
8 Indoor unit 4 Limited frequency reduction for power protection PFC protection
9 Indoor unit 5
Limited frequency reduction for discharge temperature
protection
Low voltage protection
10 Indoor unit 6 Limited frequency reduction for low pressure protection High voltage protection
11 Indoor unit 7 Limited frequency reduction for high pressure protection Low pressure protection
12 Indoor unit 8
Malfunction of discharge temperature sensor of
compressor 1
High pressure protection