Midea MV5-X252W/V2GN1 Service Manual page 46

2.3 Components
2.3.1 Layout
Figure 5-2.2: Outdoor unit main PCB components
Buttons
SW1/2/3/4
LED indicators
LED1/2/3
Main control chip
Communication chip
2.3.2 Function of buttons SW1 to SW4
Table 5-2.3: Function of buttons SW1 to SW4
Button
SW1
SW2
SW3
SW4
2.3.3 SW2 system check button
Before pressing SW2, allow the system to operate steadily for more than an hour. On pressing SW2, the parameters listed
in Table 5-2.4 will be displayed in sequence.
Table 5-2.4: SW2 system check
DSP1
content
- 0 Outdoor unit address
- 1 Outdoor unit capacity
- 2 Number of outdoor units
- 3 Number of indoor units as set on PCB
- 4 Outdoor unit output metric (total of all units)
- 5 Indoor unit demand metric (total of all units)
- 6 Outdoor unit output metric (master unit)
- 7 Operating mode
- 8 Outdoor unit output metric (this unit)
- 9 Fan A speed index
201608
Function
Force cooling
System check
Check for specific errors
Reserved
Parameters displayed on DSP2
DSP1
]
Digital display
DSP2
SW3
SW1
Master unit: 0; slave units: 1, 2, 3
Refer to Note 1
Displayed on master unit PCB only
Displayed on master unit PCB only
Displayed on master unit PCB only
Refer to Note 2
Refer to Note 3
V5 X VRF 50/60Hz
Current sensors
Inverter drive chips
LED indicators
LED6/7
LED indicators
LED4/5
SW4
SW2
Remarks
Table continued on next page ...
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