M thermal Mono
18 202004
Midea M thermal Mono Service Manual
Figure 3-3.3: 4-10KW compressor startup program
1
when ambient temperature is at or below
3°C(4-6KW)/11°C(8-10KW)
Figure 3-3.4: 12-16KW compressor startup program
1
when ambient temperature is at or below 3°C
Notes:
1. Once the first, 40-second stage of the program is complete, the program proceeds to the subsequent stages in a
step-by-step fashion and exits when the target rotation speed has been reached.
3.3 Startup Control for Heating and Domestic Hot Water Operation
Table 3-3.1: Component control during startup in heating and domestic hot water modes
Control functions and states
Compressor startup program selected according to
ambient temperature
1
Fan runs at maximum speed
2
Electronic expansion valve
Position (steps) from 0 (fully closed) to 480 (fully
open), controlled according to outdoor ambient
temperature, discharge temperature and suction
superheat
3.4 Startup Control for Cooling Operation
Table 3-3.2: Component control during startup in cooling mode
Control functions and states
Compressor startup program selected according to
ambient temperature
1
Fan run at maximum speed
2
Electronic expansion valve
Position (steps) from 0 (fully closed) to 480 (fully
open), controlled according to outdoor ambient
temperature, discharge temperature and suction
superheat
Notes:
1. Refer to Figure 3-3.1, Figure 3-3.2, Figure 3-3.3 and Figure 3-3.4 in Part 3, 4.2 “Compressor Startup Program”.
2. Refer to Table 3-4.3 in Part 3, 5.6 “Outdoor Fan Control”.
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