MCAC-HTSM-201906 Midea R410A Direct Heating Type HPWH 50Hz Technical Manual
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Table 2-7.2: Main PCB descriptions
Black: Air side heat exchanger temperature sensor connection;
White: Ambient temperature sensor connection;
Compressor suction temperature sensor connection
Compressor discharge temperature sensor connection
Water inlet temperature sensor connection
Refrigerant heating pipe temperature sensor connection
Water outlet temperature sensor connection
Water tank temperature sensor connection
T6bRefrigerant heating pipe temperature sensor connection
(Reserved)
High pressure switch connection
Low pressure switch connection
Water flow switch connection
Remote on/off switch connection
Wired controller power supply
Water flow control valve connection
Electronic expansion valve connection
Circuit water pump and E-heater control
Solenoid valve connection
Compressor crank E-heating connection
Refrigerant pipe E-heating connection