Gree GKH12K3BI, Service Manual

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U-MATCH Air
Conditioners
Service Manual
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If there is no any response to the last button press in 20 seconds, then the system will quit this menu and
back to the normal “Off” status, without the set parameter saved.
(1). Three Grades of Speed for Indoor Fan: under the debugging condition, “L1” is displayed on the “88”
display, then, press the “Test” button to go to the next step where there are two options:
1). Three low speeds (01 displayed);
2). Three high speeds (02 displayed);
Note: “lower three speeds” indicates the high, medium, and low; while “higher three speeds” indicates the ultra-
high, high, and medium.
(2). Memory Function: under the debugging conditions, “L2”is displayed on the “88” display, then, press the
“Test” button to go the next step where there are two options
1). Memory Set (01 Displayed);
2). Memory Off (02 Displayed);
(3). Mode Controls: under the debugging condition, “L3” is displayed on the “88”display, then press the “Test”
button to go to the next step where there are two options.
1). Master Controller Mode (01 displayed);
2). Slave Controller Mode (02 displayed);
Mode Controls is defaulted to Master Controller Mode.
Note: When the unit is without the wired controller, the master controller mode must be adopted for the front
panel; while if the unit is with the wired controller, the slave controller mode must be adoptedfor the front panel.
Error code Malfunction
E0 Water pump protection
E1 High pressure protection
E2 Anti-freezing protection
E3 Low pressure protection
E4 Discharge protection
E5 Overload protection
E6 Communication error
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F0 Indoor ambient temperature sensor error
F1 Evaporator temperature sensor error
F2 Condenser temperature sensor error
F3 Outdoor ambient temperature sensor error
F4 Discharge temperature sensor error
H1 Defrosting