Gree GMV-120WM/B-F Service Manual

GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
173
switch.
Fa
ult
co
de
Fault
Possible reasons
Solution
Primary reason
Secondary reason
Tertiary reason
Descri
ption
Confir
mation
metho
d
Description
Confir
mation
metho
d
Description
Confir
mation
metho
d
E1
High
press
ure
prote
ction
6. The
fan is
not
workin
g
proper
ly.
A. The
ODU's
fan
does
not
work in
the
coolin
g
mode.
B. The
IDU's
motor
does
not
work in
the
heatin
g
mode.
6.1 The IDU's
fan is faulty.
Manua
l check
6.1.1 The power cable
connecting the motor and
main board is loose.
Manua
l check
Reconnect the
motor with the
power cable.
6.1.2 The electric
capacity is not connected
or is damaged.
Manua
l check
Connect or replace
the electric
capacity.
6.1.3 The motor is
damaged.
Other
reason
s
Replace the motor.
6.2 The ODU's
fan is faulty.
Manua
l check
6.2.1 The fan motor is not
properly connected with
the control board of the
motor with the power
cable.
Manua
l check
Reconnect it
properly.
6.2.2 The fan motor is not
properly connected with
the control board of the
motor with the signal
feedback cable.
Manua
l check
Reconnect it
properly.
6.2.3 The control board of
the fan's motor is
damaged.
Manua
l check
Replace the control
board of the motor.
6.2.4 The main board of
the fan's motor is
damaged.
Other
reason
s
Replace the motor.
7. Too
much
refrige
rant
Other
reason
s
Incorrect
quantity of
refrigerant is
injected.
——
——
——
Check the
necessary amount
of refrigerant and
discharge
unneeded
refrigerant slowly
via the stop valve of
the fluid pipe.
JL
Low
high
press
ure
prote
ction
1. The
ambie
nt
tempe
rature
excee
ds the
range.
——
1.1 The
outdoor
ambient
temperature in
the cooling
mode is lower
than -10°C （14
℉）.
Measu
re the
outdoo
r
ambie
nt
temper
ature.
——
——
It is a normal
phenomenon
caused by the
protection function.
1.2 The indoor
ambient
temperature in
the heating
mode is lower
than 5°C °C （9
℉）.
Measu
re the
temper
ature
of the
unit's
return
air.
——
——
It is a normal
phenomenon
caused by the
protection function.
2. Not
enoug
h
refrige
rant
——
Locate the leak and
inject refrigerant.

Gree GMV-120WM/B-F Specifications

General

Brand	Gree
Model	GMV-120WM/B-F
Category	Inverter
Language	English