Gree U-Match 5 Series - Switch between Fahrenheit and Degree Celsius; Inquiry of Ambient Temperature; Inquiry of Historical Malfunction; Debugging Function

GREE U-Match 5 SERIES UNIT SERVICE MANUAL
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working when the room card is pulled out. When door control function senses the room card is not inserted.
The setting method please refer to Debugging Function (2.3.9).
Note:
①
In long-distance monitoring or centralized controller, no matter the room card is inserted or not, the
ON/OFF of unit can be controlled. If long-distance monitoring or centralized controller information is
received when the room card is not inserted, the icon
is cleared. When the card is reinserted, door
control function is judged to be turned on. If long-distance monitoring or centralized controller information
is received when the room card is inserted, it will keep the original status.
②
The unit can not be controlled by buttons when the card is not inserted.
2.3.6 Switch between Fahrenheit and Degree Celsius
Under power-off status, press “MODE” and “▼” buttons simultaneously for 5 seconds, display board will
switch between degree Celsius and Fahrenheit.
2.3.7 Inquiry of Ambient Temperature
Under power-off or power-on status, press and hold “SWING/ENTER” button for 5 seconds to enter into
ambient temperature inquiry interface, then timer area displays the ambient temperature type 01 or 02, and
ambient temperature area displays the corresponding ambient temperature of corresponding type. In which, 01
refers to outdoor ambient temperature, 02 refers to indoor ambient temperature. Press “MODE” button can switch
between type 01 and 02. Press buttons other than “MODE” or when the unit receives remote controller signal, it
will quit the inquiry status. If there is no any operation for 20 seconds, it will quit automatically.
Note:
When the outdoor ambient temperature sensor detects the same temperature for 12 hours, it will shield the
display of outdoor ambient temperature sensor.
2.3.8 Inquiry of Historical Malfunction
Under off or on state of the unit, continuously press Function and ▼ buttons for 5s to view historical
malfunction.
In enquiry state, set temperature displaying zone displays “00”. Press ▲ and ▼ buttons to view the 5
malfunctions happened recently. The timer displaying position displays the specific error code. The 5th displayed
malfunction is the last malfunction.
2.3.9 Debugging Function
Under off state of the unit, press Function and Timer buttons at the same time for 5s to go to the debugging