Midea MHA-V6W/D2N8-B User Manual

M thermal Split
202004 19
Part 3
-
Control
3 Startup Control
3.1 Compressor Startup Delay Control
In initial startup control and in restart control (except in oil return operation and defrosting operation), compressor startup
is delayed such that a minimum of the set re-start delay time has elapsed since the compressor stopped, in order to
prevent frequent compressor on/off and to equalize the pressure within the refrigerant system. The compressor re-start
delays for cooling and heating modes are set on the user interface. Refer to the M thermal Split Engineering Data Book
Part 3, 8.5 COOL MODE SETTING Menu and Part 3, 8.6 HEAT MODE SETTING Menu .
3.2 Compressor Startup Program
In initial startup control and in re-start control, compressor startup is controlled according to outdoor ambient
temperature. Compressor startup follows one of two startup programs until the target rotation speed is reached. Refer to
Figure 3-3.1, Figure 3-3.2.
Figure 3-3.1: MHA-V4(6)W/D2N8-B compressor startup program
1
when ambient temperature is above 3°C
38rps
Target rotation speed
Compressor rotation speed (rps)
Time (s)
32rps
42rps
56rps
66rps
70rps
40s
60s
40s
40s
40s
120s
82rps
120s
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
.
Figure 3-3.2: MHA-V4(6)W/D2N8-B compressor startup program
1
when ambient temperature is at or below 3°C
38rps
Target rotation speed
Compressor rotation speed (rps)
Time (s)
0
32rps
42rps
56rps
66rps
70rps
40s
90s
60s
40s
40s
240s
82rps
240s
36rps
90s
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.
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Midea MHA-V6W/D2N8-B Specifications

General

Brand	Midea
Model	MHA-V6W/D2N8-B
Category	Air Conditioner
Language	English