Gree U-MATCH GFH09K3CI, Service Manual

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A/A DC INVERTER U-MATCH AIR CONDITIONERS CONTROL
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4.4.14 Field Functions
Under off-state of the unit, press Function and Timer buttons continuously for 5s to go to the debugging menu.
Press Mode button to adjust the setting items and ▲ or ▼ button to set the actual value.
4.4.14.1 Ambient Temperature Sensor Setting
In field setting mode, press Mode button to adjust the temperature displayed location displaying 00, and press
▲ or ▼ button to adjust setting state at timer displayed location. There are 3 types for selection:
⑴
Indoor ambient temperature is that at return air inlet (01 is displayed at timer displayed location)
⑵ Indoor ambient temperature is that at the place of screen (02 is displayed at timer displayed location)
⑶
Return air inlet temperature sensor shall be selected for cooling, dry and fan modes and wired controller
temperature sensor (03 is displayed at timer displayed location) shall be selected for heating and auto modes.
4.4.14.2 Three Grades of Speed for Indoor Fan
In field setting mode, press Mode button to adjust the temperature displayed location displaying 01 and press ▲
or ▼ button to adjust setting state at timer displayed location. There are 2 types for selection:
⑴
3 low grades (LCD displays 01)
⑵
3 high grades (LCD displays 02)
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.
4.4.15 Other Functions
4.4.15.1 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 . After that, repress these two
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.
4.4.15.2 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.
4.4.15.3 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:
1. 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.
2. If malfunction of outdoor ambient sensor occurs, this function will be shielded in 12hr.
4.4.15.4 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.
4.4.15.5 Selection of Centigrade and Fahrenheit