Midea HB-A100/CGN8-B, Service Manual

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M thermal Split
202004 49
3 Error Code Table
Table 4-3.1: Error code table
Error
code
Serial
Number
1
Content
2
Remarks
C7 65 High temperature protection of transducer module
E0 1 Water flow failure(E8 appears for 3 times)
E1 2 Phase sequence error Only applies to 3-phase models
E2 3
Communication error between the main control board of hydraulic
module and user interface
E3 4 Final outlet water temperature sensor error Sensor T1
E4 5 Domestic hot water tank temperature sensor error Sensor T5
E5 6 Air side heat exchanger refrigerant outlet temperature sensor error Sensor T3
E6 7 Outdoor ambient temperature sensor error Sensor T4
E7 8 Balance tank upper temperature sensor error Sensor Tbt1
E8 9 Water flow failure
E9 10 Suction pipe temperature sensor error Sensor Th
EA 11 Discharge pipe temperature sensor error Sensor Tp
Eb 12 Solar panel temperature sensor error Sensor Tsolar
Ec 13 Balance tank nether temperature sensor error Sensor Tbt2
Ed 14 Water side heat exchanger water inlet temperature sensor error Sensor Tw_in
EE 15 Hydronic box EEPROM error
F1 116 DC generatrix voltage is too low
H0 39
Communication error between outdoor unit main control chip and
hydronic box main control chip
H1 40
Communication error between outdoor unit main control chip and
inverter driver chip
H2 41
Water side heat exchanger refrigerant outlet (liquid pipe)
temperature sensor error
Sensor T2
H3 42
Water side heat exchanger refrigerant inlet (gas pipe) temperature
sensor error
Sensor T2B
H4 43 P6 appear 3 times in one hour
H5 44 Room temperature sensor error Sensor Ta
H6, 45 DC fan error
H7 46 Abnormal main circuit voltage
H8 47 Pressure sensor error
H9 48 Circuit 2 water outlet temperature sensor error Sensor Tw2
HA 49 Water side heat exchanger water outlet temperature sensor error Sensor Tw_out
Hb 50 PP protection appears three times in a row and Twout<7
HF 54 Invert module EEPROM error
HH 55 DC fan error(H6 appears 10 times in 120min)
HP 57 Low pressure protection for cooling mode
P0 20 Low pressure switch protection
P1 21 High pressure switch protection
P3 23 Compressor current protection
P4 24 Discharge temperature protection
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