Error Display - Gree FGR20/BNa-M Service Manual

Duct Type Split Air Conditioner
Service Manual
Three low grades indicate high, medium and low grades and 3 high grades indicate super-high, high and
medium grades.
Press Enter/Cancel button to save the setting and quit after setting. If there is not any operation within 20s
after the system responds to the last button operation in this interface, the system will quit this menu and display
normal off-state; meanwhile, current setting won't be saved.
3.4.15 Other Functions
3.4.15.1 Lock Function
Upon startup of the unit without malfunction or under off-state of the unit, press ▲ and ▼buttons at the same
time for 5s till the wired controller enters lock state. In this case, LCD displays
buttons at the same time for 5s to quit lock state.
Under lock state, any other buttons won't give any response to the press.
3.4.15.2 Memory Function
Memory switchover: Under off-state of the unit, press Mode and ▲ buttons at the same time for 5s to switch
memory modes. During setting memory mode, Memory will be displayed. If this function is not set, the unit will be
under off state after power failure and then power recovery.
Memory recovery: If memory mode has been set for wired controller, the wired controller after power failure
will resume its original running state upon power recovery.
Note:
It will take about 5 seconds to save all the information, therefore, please do not cut down the power at this
time, or it may fails.
3.4.15.3 Enquiry of Outdoor Ambient Temperature
Under on or off state of the unit, press Enter/Cancel button for 5s, outdoor ambient temperature will be
displayed at temperature displaying location after a sound of click. This enquiry state will quit by pressing any
button. If there is not any operation for 20s, it will automatically quit.
Note:
This function will be shielded after energization of 12hr for some models of the units without outdoor ambient
sensors. Please refer to Instruction for details.
If malfunction of outdoor ambient sensor occurs, this function will be shielded in 12hr.
3.4.15.4 Enquiry of Historical Errors
Continuously press Function and ▼ buttons without lock for 5s into enquiry state. In this state, press Enter/
Cancel button to quit, or it will automatically quit after there is not any operation of button in 30min. In enquiry
state, press Mode button to adjust temperature displayed location displaying 00-04 and press ▲ or ▼ button to
make timer displayed location display error code. If 2E1 is displayed in timer displayed location, it means high
pressure protection of the system 2.
3.4.15.5 Selection of Centigrade and Fahrenheit
Under off-state of the unit, press Mode and ▼ at the same time for 5s, the displayer panel will switch
between Centigrade and Fahrenheit.

3.5 Error Display

If there is malfunction during running of the system, LCD will display error code at temperature–displayed
location. Once there is more than one malfunction, error codes will be displayed circularly. If there are multiple
circuit systems, the system number of failed system will be displayed before the colon (not for single system).
If malfunction occurs, turn off the unit and contact nearest dealer for help.
As shown in Fig.3.19 it means high pressure protection of system 2 under unit on.
CONTROL
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. After that, repress these two