Midea MHC-V16W/D2RN8-B - E3, E4, H2, H3, Ed, HA, H5, H9 Troubleshooting

M thermal Mono
202004 59
4.5 E3, E4, H2, H3, Ed, HA, H5, H9 Troubleshooting
Digital display output
Description
 E3 indicates a backup electric heater water outlet temperature sensor error.
 E4 indicates a domestic hot water tank temperature sensor error.
 H2 indicates a water side heat exchanger refrigerant outlet (liquid pipe) temperature sensor error.
 H3 indicates a water side heat exchanger refrigerant inlet (gas pipe) temperature sensor error.
 Ed indicates a water side heat exchanger water inlet temperature sensor error.
 HA indicates a water side heat exchanger water outlet temperature sensor error.
 H5 indicates a room temperature sensor error.
 H9 indicates a zone 2 water outlet temperature sensor error.
 Eb indicates solar panel temperature sensor error
 E7 indicates balance tank upper temperature sensor error
 EC indicates balance tank nether temperature sensor error
 M thermal Mono stops running.
 Error code is displayed on hydronic system main control board for refrigerant system and user interface.
Possible causes
 Temperature sensor not connected properly or has malfunctioned.
 Damaged hydronic system main PCB.
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