Gree GMV-PD160W/NAB-M

96
DC Inverter Multi
VRF Service Manual
MAINTENANCE
1 List of Unit Errors
1.1 List of Error Display on Wired Controller
Error
Code
Error
Description
Source of
Error Signal
Notes on Control
E1
Compressor
high-pressure
protection
High-pressure
Switch
The high pressure protection value is 4.2MPa. When it is detected three times
successively that a compressor is under high pressure, this compressor will be
stopped. In this case, error code E1 will be displayed and the run indicator will blink.
E2
Indoor antifreeze
protection
Evaporator
sensor
When it is detected for 10 minutes successively that Tevap. is
-2
(varying with indoor unit), the antifreeze protection will be activated,
in which case the outdoor unit will immediately shut off the indoor
electronic expansion valve and the capacity will be set to “0”.
E3
Compressor
low-pressure
protection
Low-pressure
Switch
When the low pressure reaches the protection value (absolute
pressure: 0.15MPa), the low pressure switch will be cut off, in
which case the low pressure protection will be displayed.
E4
Compressor
exhaust
temperature
protection
Exhaust
temperature
sensor
When the exhaust temperature (Texhau.) is equal to and higher than 113
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protection, the error code E4 will be displayed. When the exhaust temperature
is lower than TR , the compressor will resume to operation after it has
been stopped for 3 minutes. The compressor can resume to operation for
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unit must be disconnected from power supply before it can restarted.
E5
Frequency
converter
overcurrent
protection
Compressor
drive
The drive board of variable frequency compressor is incurred to error. For details on
the error message, please refer to the Display Code on Digital Tube of Outdoor Unit.
E6
Communication
error
Communication
The mainboard of indoor unit or the wired control is incurred to
communication error with outdoor unit. The indoor unit incurred to
communication error will be stopped and display the error code.
E7 0RGHFRQÀLFW User operation
The run mode of the unit that is started later is inconsistent to the mode
that is started earlier. Only the cooling and dry mode has possible mode
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E9
Water-full
protection
Water pump
When water full is detected for 8 seconds successively, the system will enter into
water-full protection state, in which case the wired controller will display E9 and give
out alarm. In case of water-full protection under each mode, the other loads of the
indoor unit will be stopped, except that the water pump will remain working and give
out alarm. In this case, the outdoor unit shall adjust the capacity output accordingly
F0
Indoor ambient
temperature
sensor error
Indoor room
sensor
The indoor unit incurred to sensor error will display error code and be stopped.
F1
Indoor coil inlet
temperature
sensor error
Indoor coil-inlet
temperature
sensor
The indoor unit incurred to sensor error will display error code and be stopped.
F2
Indoor coil
middle
temperature
sensor error
Indoor coil-
middle
temperature
sensor
The indoor unit incurred to sensor error will display error code and be stopped.
F3
Outdoor coil inlet
temperature
sensor error
Indoor coil-exit
temperature
sensor
The indoor unit incurred to sensor error will display error code and be stopped.