Midea V
6R Series Service Manual
4.4 Startup Control for Heating Only/Main Heating Operation
Table 3-4.2: Component control during startup in heating only / main heating mode
Initial step for 30s, then+8Hz×Nstep /
10s. (Until it reaches Pc_max-Pe_min ≥
0.2MPa)
Adjust according to
the high pressure
and low pressure
etc.
Start: 0 step, then adjust by the high
pressure and low pressure
Maintains previous
position
Determined based on the initial mode of the heat exchanger
Electronic
expansion valve
Condenser
2880pls,
Evaporator
0pls
Condenser, 2880pls for 2min, then subcooling control
Evaporator, adjusted according to the difference between
ambient temperature and low-pressure saturation
temperature.
Compressor operation, 17pls
→
+8pls per 20S based on high
pressure or low pressure etc.
Compressor not operation, 0pls.
Compressor operation, ON
Compressor not operation, OFF
ON if Pc≥3.3MPa or Pe
＜
0.18MPa, else OFF.
Control based on IDUs’ mode
Electronic
expansion valve
Control based on IDUs’ mode
Electronic
expansion valve
Setting speed by owners(Anti-cold wind function is effective)
Electronic
expansion valve
300pls (500P EEV)
1200pls (2000P
EEV)
500P EEV IDU: Maintain 300pls for 3min
2000P EEV IDU : Maintain 1200pls for 3min
End if startup time arrives 10 min or the minimum superheat of discharge
temperature≥10°C for 5min or Tc_max > 50°C .
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