Gree U-Match 5 Series - Setting Ambient Temperature Sensor; Displaying Setting of Freeze Protection Error Code; Setting Refrigerant Lacking Protection Function; Selecting Blowing Residual Heating of Indoor Unit

GREE U-Match 5 SERIES UNIT SERVICE MANUAL
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menu. Press Mode button to adjust the setting items and press ▲ or ▼ button to set the actual value.
2.3.9.1 Setting ambient temperature sensor (dual ambient temperature sensors function)
Under debugging state, press Mode button to adjust to “00” in temperature displaying zone. Timer zone
displays setting state and press ▲ or ▼ button to adjust. There are 3 selections:
(1) The ambient temperature at air return is set as indoor ambient temperature (timer zone displays 01).
(2) The temperature at wired controller is set as indoor ambient temperature (timer zone displays 02).
(3) Select the temperature sensor at air return in cooling, dry and fan mode; Select the temperature sensor at
wired controller in heating and auto mode (timer zone displays 03).
2.3.9.2 Displaying setting of freeze protection error code
Under debugging state, press Mode button to adjust to “02” in temperature displaying zone. Timer zone
displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:
(1) Displayed (LCD displays 01).
(2) Not displayed (LCD displays 02).
It is defaulted to be not displayed for export unit and be displayed for domestic unit.
2.3.9.3 Setting refrigerant lacking protection function
Under debugging state, press Mode button to adjust to “04” in temperature displaying zone. Timer zone
displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:
(1) With refrigerant lacking protection function (LCD displays 01).
(2) Without refrigerant lacking protection function (LCD displays 02).
2.3.9.4 Selecting blowing residual heating of indoor unit
Under debugging state, press Mode button to adjust to “05” in temperature displaying zone. Timer zone
displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:
(1) Mode 1 (LCD displays 00).
(2) Mode 2 (LCD displays 01).
Note:
Blowing residual heating of indoor unit.
Mode 1: Unit stops when reaching temperature point and indoor fan motor does not stop in cooling mode;
After unit stops when reaching temperature point in heating mode, duct type unit and floor ceiling unit blow
residual heat for 60s and then stop indoor unit, while cassette type unit always operates in low fan speed and
blows residual heat for 60s when there is malfunction. When the duct type unit and floor ceiling unit stop after
reaching the temperature point in heating mode, the fan will blow residual heat for 60s and then the indoor fan will
stop. From the time when the fan stops after blowing residual heat, in order to prevent heat accumulation, the