GREE U-Match 5 SERIES UNIT SERVICE MANUAL
54
Number Error code Error
21 H7 Driver out-of-step protection
22 HC Pfc protection
23 Lc Startup failure
24 Ld Compressor phase-sequence protection
25 LF Power protection
26 Lp IDU and ODU unmatched
27 U7 4–way valve switch-over error
28 P0 Driver reset protection
29 P5 Over-current protection
30 P6 Master control and driver communication error
31 P7 Driver module sensor error
32 P8 Driver module high temperature protection
33 PA AC current protection
34 Pc Driver current error
35 Pd Sensor connection protection
36 PL Bus low-voltage protection
37 PH Bus high-voltage protection
38 PU Charge loop error
39 PP Input voltage error
40 ee Drive memory chip error
41 C4 ODU jumper cap error
42 dJ Phase-loss and anti-phase protection
43 oE ODU error, for specific error please see the status of ODU main board indicator
44 EL Emergency stop (fire alarm)
If malfunction occurs during operation, LCD temperature display zone will show the failure information. If
several malfunctions occur at the same time, their corresponding error codes will be shown in turn. When
malfunction occurs, please shut off the unit and send for professional personnel to repair. For example, E1 (as
shown below) indicates high pressure protection.
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