Mitsubishi Electric Mr. SLIM MSZ-FA25VA Technical Manual página 730

Funciones
10-10. FUNCTION OF SWITCHS, CONNECTORS AND JUMPERS
● Outdoor switch for a new freon function table
Switch
Function
Signal No.
Compulsory defrosting w1
SW1 1
2 Abnormal history clear
3
Refrigerant address setting
6
SW4 1
Test run ON/OFF
2
Test run mode setting
SW5 1
Fan 100% fix
Outdoor LEV opening fix w2
2
3 No function
4 Length of defrost operation
1 Compulsory defrosting should be done as follows.
1 Change the DIP SW1-1 in the outdoor controller board OFF➔ ON (compulsory defrosting start).
According to the 1 operation,
• Heat mode setting
• When the stated condition is satisfied, the defrosting operation will be completed.
2 Ignore the change of LEV opening, which is subject to change of subcooling, and fix DIP SW 5-2 in the on position. Then
LEV opening is fixed. When air conditioner is overloaded for some reasons, ignore the change of subcooling and adjust the
LEV opening in accordance with overload condition.
730
Action by the switch operation
ON
Start
Clear
ON
1 2 3 4 5 6
0
ON
1 2 3 4 5 6
4
ON
1 2 3 4 5 6
8
ON
1 2 3 4 5 6
12
ON
Heat
100% fix
Fix
No function
20 minutes
• Compressor operating
OFF
Normal
Normal
ON ON ON
1 2 3 4 5 6 1 2 3 4 5 6
1 2
ON ON ON
1 2 3 4 5 6 1 2 3 4 5 6
5 6
ON ON
1 2 3 4 5 6 1 2 3 4 5 6
9 10
ON ON
1 2 3 4 5 6 1 2 3 4 5 6
13 14
OFF
Cool
Normal
Normal
No function
15 minutes (Normal)
• The defrosting starts when the piping temperature is 8˚C and below.
Effective timing
Heat compressor operating
off or operating
1 2 3 4 5 6
3
When power supply ON
1 2 3 4 5 6
7
ON
1 2 3 4 5 6
11
ON
1 2 3 4 5 6
15
OFF
off or operating
off or operating
Always
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