Gree /E-X, Руководство по обслуживанию

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GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
134
Fault
code
Fault Possible reasons Solution
3.The fan drive board is faulty. wiring diagram;
3.Replace the fan drive board.
HC
Fan drive current
detection circuit fault
1.The fan drive board is faulty. 1.Replace the fan drive board.
HJ
Variable frequency
fan starting failure
1.The drive board is damaged;
2.The fan's UVW cable is not connected
properly;
3.The fan is damaged.
1.Replace the fan drive board;
2.Reconnect the fan's UVW cable;
3.Replace the fan.
2.2 Gas-mixing protection of 4-way valve
2.2.1 System exhaust temperature exception
Fault
code
Fault
Possible reasons
Solution
Primary reason Secondary reason Tertiary reason
Description
Confirmation
method
Description
Confirmation
method
Description
Confirmation
method
E4
High
exhaust
temperature
protection
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
expansion
valve is not
connected
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
expansion
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 The system's
exhaust 3.1 The fluid
pipe is Touch the
pipe along the
—— ——
Replace and
solder the