Gree GMV-Pdm224W/NaB-M User Manual

DC Inverter Multi
VRF Service Manual
167
MAINTENANCE
1 TROUBLE SHOOTING
1�1 Trouble Display of Indoor Unit
Error
Code
Error
Source of
error signal
Control description
E1
Compressor high
pressure protection
High pressure
switch
The high pressure protection value is 4.2MPa. When high pressure of a
compressor is detected for successive three times, the compressor will stop.
Error code E1 will be diaplayed and the running LED will blink.
E2
Indoor antifreezing
protection
Temperature
sensor of
evaporator
When Tevaporator
-2 lasts for 10min, the antifreezing protection will occur.
The indoor electronic expansion valve will be closed and the capacity is 0.
E3
Compressor low
pressure protection
Low pressure
switch
When the low pressure protection value (0.15Mpa, absolute pressure) is reached, the low
pressure switch will be disconnected. The low pressure protection will be displayed.
E4
Compressor
discharge
temperature
protection
Discharge
temperature sensor
When discharge temperature T is 113
or higher, the stop protection will
occur. E4 is displayed upon the rst discharge protection. After discharge
temperature is lower than TR and the unit stops for 3min, the compressor will
resume running. If this occurs for three times in one hour, the compressor can
not resume running. It is a must to cut off the power and restart the unit.
E5
Conversion
overcurrent
protection
Compressor driver
The driving board of conversion compressor is wrong. Refer to the
error code of outdoor nixie tube for specic error information.
E6
Communication
Error
Communication
There is communication error between the mainboard of indoor unit or wired controller
and the outdoor unit. The wrong indoor unit will stop and display error code.
E7 Mode conict User operation
The running modes of the unit running rst and that of later are variant. There
is mode conict among cooling, defrosting and heating mode. There is
no mode conict among fan, cooling, defrosting and heating mode. When
mode conict occurs, the indoor unit will display E7 and stop.
E9
Water full
protection
Water pump
When the water is full for successive 8s, the water full protection will occur. The wired
controller will display E9 and alarm will occur. In that case, the water pump will work while
the other load of indoor unit will stop. The outdoor unit needs to adjust capacity output.
F0
Ambient
temperature sensor
error of indoor unit
Ambient
temperature sensor
of indoor unit
The indoor unit of temperature sensor error displays the error code and stop.
F1
Indoor coil pipe
inlet temperature
sensor error
Indoor coil pipe
inlet temperature
sensor
The indoor unit of temperature sensor error displays the error code and stop.
F2
Indoor coil pipe
middle temperature
sensor error
Indoor coil
pipe middle
temperature sensor
The indoor unit of temperature sensor error displays the error code and stop.
F3
Indoor coil pipe
outlet temperature
sensor error
Indoor coil pipe
outlet temperature
sensor
The indoor unit of temperature sensor error displays the error code and stop.
F4
Outdoor ambient
temperature
sensor error
Outdoor ambient
temperature sensor
If short circuit occurs to the temperature sensor, there will be alarm.. The error information
will be transmitted to each indoor unit, The error LED or wired controller will display
the error code. When outdoor ambient temperature is lower than -5
, the break circuit
of outdoor temperature sensor will be shielded. It is treated according to -30 .
F7
Outdoor defrosting
temperature
sensor error
Outdoor defrosting
temperature sensor
If short circuit occurs to the temperature sensor, there will be alarm.. The error information
will be transmitted to each indoor unit, The error LED or wired controller will display
the error code. When outdoor ambient temperature is lower than -5 , the break circuit
of outdoor temperature sensor will be shielded. It is treated according to -30 .
F9
Discharge
temperature
sensor error
Discharge
temperature sensor
If short circuit occurs to the temperature sensor, there will be alarm.. The error information
will be transmitted to each indoor unit, The error LED or wired controller will display
the error code. When outdoor ambient temperature is lower than -5 , the break circuit
of outdoor temperature sensor will be shielded. It is treated according to -30 .

Gree GMV-Pdm224W/NaB-M Specifications

General

Brand	Gree
Model	GMV-Pdm224W/NaB-M
Category	Inverter
Language	English