Gree GMV-615WM/B-X Service Manual

GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
137
Fault
code
Fault
Possible reasons
Solution
Primary reason
Secondary reason
Tertiary reason
Descriptio
n
Confirmatio
n method
Descriptio
n
Confirmati
on method
Descripti
on
Confirmati
on method
E4
High
exhaust
temperat
ure
protectio
n
1. The
stop valve
of the
ODU is
not fully
opened as
required.
——
——
——
——
Manual
check
Fully open
the stop
valve.
2. The
IDU's
electronic
expansion
valve is
not
working
properly.
When the
IDU is
working in
the cooling
mode and
the
electronic
expansion
valve is
opened to
2000PLS,
the exhaust
temperature
of the IDU's
coil is more
than 15°C
higher than
the intake
temperature
; when the
IDU is
working in
the heating
mode and
the
electronic
expansion
valve is
opened to
2000PLS,
the intake
temperature
of the IDU's
coil is more
than 10°C
higher than
the intake
temperature
;
2.1 The
controlling
of
electronic
expansion
valve by
main
board of
indoor unit
is
abnormal.
Reset the
IDU.
Listen to
the sound
and touch
the tube to
see if the
electronic
expansion
valve is
reset.
If it is set, it
is normal.
Otherwise,
it is faulty.
2.1.1 The
control
wire of
the
electronic
expansio
n valve is
not
connecte
d to the
main
board.
Manual
check
Connect
the
electronic
expansion
valve's
control
wire to the
main
board.
2.1.2 The
control
wire that
connects
the
electronic
expansio
n valve to
the main
board is
broken.
Manual
check
Repair or
replace the
control
wire of the
electronic
expansion
valve.
2.2 The
electronic
expansion
valve in
the mode
switcher is
faulty.
Other
reasons
2.2.1
Affected
by
impurities
in the
system
——
Clean the
system
and clear
the
impurities.
Replace
the body of
the
electronic
expansion
valve.
2.2.2 The
valve
body is
faulty.
——
Replace
the body of
the
electronic
expansion
valve.
3. The
system
pipeline is
blocked.
The
system's
exhaust
temperature
rises and
the low
3.1 The
fluid pipe
is
blocked.
Touch the
pipe along
the flowing
direction of
refrigerant
to feel the
——
——
Replace
and solder
the pipe.

Gree GMV-615WM/B-X Specifications

General

Brand	Gree
Model	GMV-615WM/B-X
Category	Air Conditioner
Language	English