Maintenance; List Of Unit Errors; List Of Error Display On Wired Controller - Gree GMV-PD100W/NAB-K Service Manual

DC Inverter Multi
VRF Service Manual

MAINTENANCE

1 List of Unit Errors

1.1 List of Error Display on Wired Controller

Error Error
Code Description
Compressor
E1 high-pressure
protection
Indoor antifreeze
E2
protection
Compressor
E3 low-pressure
protection
Compressor
exhaust
E4
temperature
protection
Frequency
converter
E5
overcurrent
protection
Communication
E6
error
E7
Water-full
E9
protection
Indoor ambient
F0 temperature
sensor error
Indoor coil inlet
F1 temperature
sensor error
Indoor coil
middle
F2
temperature
sensor error
Outdoor coil inlet
F3 temperature
sensor error
96
Source of
Error Signal
The high pressure protection value is 4.2MPa. When it is detected three times
High-pressure
successively that a compressor is under high pressure, this compressor will be
Switch
stopped. In this case, error code E1 will be displayed and the run indicator will blink.
When it is detected for 10 minutes successively that Tevap. is
Evaporator (varying with indoor unit), the antifreeze protection will be activated,
sensor in which case the outdoor unit will immediately shut off the indoor
electronic expansion valve and the capacity will be set to "0".
When the low pressure reaches the protection value (absolute
Low-pressure
pressure: 0.15MPa), the low pressure switch will be cut off, in
Switch
which case the low pressure protection will be displayed.
When the exhaust temperature (Texhau.) is equal to and higher than 113
Exhaust protection, the error code E4 will be displayed. When the exhaust temperature
temperature is lower than TR , the compressor will resume to operation after it has
sensor been stopped for 3 minutes. The compressor can resume to operation for
unit must be disconnected from power supply before it can restarted.
Compressor The drive board of variable frequency compressor is incurred to error. For details on
drive the error message, please refer to the Display Code on Digital Tube of Outdoor Unit.
The mainboard of indoor unit or the wired control is incurred to
Communication communication error with outdoor unit. The indoor unit incurred to
communication error will be stopped and display the error code.
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
User operation
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
Water pump 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
Indoor room
The indoor unit incurred to sensor error will display error code and be stopped.
sensor
Indoor coil-inlet
temperature The indoor unit incurred to sensor error will display error code and be stopped.
sensor
Indoor coil-
middle
The indoor unit incurred to sensor error will display error code and be stopped.
temperature
sensor
Indoor coil-exit
temperature The indoor unit incurred to sensor error will display error code and be stopped.
sensor
Notes on Control
-2