Midea MC-SU30-RN1L

Aqua Tempo Super II
20 201709
Midea Aqua Tempo Super II
Service Manual
5 Normal Operation Control
5.1 Component Control during Normal Operation
Table 3-5.1: Component control during heating operation
Component
Wiring diagram
label
30kW
60kW
Control functions and states
Inverter compressor A
COMP A
●
●
Controlled according to load requirement
Inverter compressor B
COMP B
●
DC fan motor A
FAN A
●
●
Controlled according to air side heat exchanger pipe
temperature and discharge pressure
DC fan motor B
FAN B
●
Electronic expansion valve
EXV 1
●
●
Position (steps) from 0 (fully closed) to 480 (fully
open), controlled according to discharge superheat
and compressor frequency, and use suction
temperature, air side heater exchanger temperature,
discharge temperature to modify the control.
Four-way valve
STF1
●
●
On
Solenoid valve (oil balance)
SV4_1
●
●
Open regularly
Water pump1
PUPM1
●
●
On
Water pump2
PUPM2
●
●
Water side heat exchanger heater 1
EVA-HEAT 1
●
●
Off
Water side heat exchanger heater 2
EVA-HEAT 1
●
Water flow switch heater
W-HEAT1
●
●
Off
Electric auxiliary heater
E-HEAT_L/
E-HEAT_N
●
●
Controlled according to ambient temperature
Crank case heater 1
HEAT1
●
●
Off
Crank case heater 2
HEAT2
●
Table 3-5.2: Component control during cooling operation
Component
Wiring diagram
label
30kW
60kW
Control functions and states
Inverter compressor A
COMP A
●
●
Controlled according to load requirement
Inverter compressor B
COMP B
●
DC fan motor A
FAN A
●
●
Controlled according to air side heat exchanger
refrigerant total outlet temperature (Tz/7)
DC fan motor B
FAN B
●
Electronic expansion valve
EXV 1
●
●
Position (steps) from 0 (fully closed) to 480 (fully
open), controlled according to suction superheat,
water inlet temperature and compressor frequency.
Four-way valve
STF1
●
●
Off
Solenoid valve (oil balance)
SV4_1
●
●
Open regularly
Water pump1
PUPM1
●
●
On
Water pump2
PUPM2
●
●
Water side heat exchanger heater 1
EVA-HEAT 1
●
●
According to water side heat exchanger
anti-freezing temperature (Taf)
Water side heat exchanger heater 2
EVA-HEAT 2
●
Water flow switch heater
W-HEAT1
●
●
Off
Electric auxiliary heater
E-HEAT_L/
E-HEAT_N
●
●
Off
Crank case heater 1
HEAT1
●
●
Off
Crank case heater 2
HEAT2
●