Chapter 4 Maintenance; Part 1 Failure Code Table; System Failure Code Table - Gree Ultra Heat GMV Multi VRF Heat Pump Series Service Manual

Ultra Heat GMV VRF Technical Service Manual

CHAPTER 4 MAINTENANCE

PART 1 FAILURE CODE TABLE

1 SYSTEM FAILURE CODE TABLE

Content
symbol
0
Division
symbol
Malfunction of
L
IDU
d
Malfunction of
E
ODU
Main board of
F
ODU is poor
Protection for
J
other modules
b
malfunction of
P driving board
of compressor
Malfunction of
H driving board
of fan
Preheat time
U of compressor
is insufficient
Communicatio
n malfunction
between IDU,
C
ODU and
IDU's wired
controller
Unit waiting for
A
debugging
SE operation
n setting of
system
1 2
Auxiliary
Protection of
heating
indoor fan
protection
Malfunction of
lower water
Indoor PCB is
temperature
poor
sensor of
water tank
Discharge
High-pressure
low-temperatur
protection
e protection
Malfunction of
high-pressure
sensor
Over-current Over-current
protection of protection of
compressor 1 compressor 2
Malfunction of
Malfunction of
outdoor
defrosting
ambient
temperature
temperature
sensor 1
sensor
Voltage
Driving board
protection of
of compressor
driving board
operates
power of
abnormally
compressor
Voltage
Driving board
protection of
of fan operates
driving board
abnormally
power of fan
Wrong setting
of ODU's
capacity
code/jumper
cap
Communicatio
n malfunction
between main
control and
inverter
compressor
driver
Refrigerant
recovery
operation of
after-sales
101
3 4
Abnormal
Water-full power supply
protection for wired
controller
Malfunction of Malfunction of
ambient entry-tube
temperature temperature
sensor sensor
High discharge
Low-pressure temperature
protection protection of
compressor
Malfunction of
low-pressure
sensor
Over-current Over-current
protection of protection of
compressor 3 compressor 4
Malfunction of
Malfunction of
liquid
defrosting
temperature
temperature
sensor of
sensor 2
sub-cooler
Reset
Drive PFC
protection of
protection of
driving module
compressor
of compressor
Reset
Drive PFC
protection of
protection of
driving module
fan
of fan
Power supply
phase Refrigerant-lac
sequence king protection
protection
Communicatio
n malfunction
between main Malfunction of
control and lack of IDU
inverter fan
driver
Defrosting Oil-return
Limit setting
Compulsory for max.
defrosting capacity/outpu
t capacity
MAINTENANCE
5
Freeze
prevention
protection
Malfunction of
discharge
temperature
sensor of
compressor 1
Over-current
protection of
compressor 5
Malfunction of
gas
temperature
sensor of
sub-cooler
Over-current
protection of
inverter
compressor
Over-current
protection of
inverter fan
Wrong
address for
driving board
of compressor
Alarm
because
project code
of IDU is
inconsistent
Compulsory
excursion of
engineering
code of IDU