Mitsubishi Electric Mr. Slim PUHZ-ZRP35VKA Service Manual page 82

Outdoor M-NET board (optional)
CN2M
Connect to M-NET
LED2
Energizing
display of
M-NET board
(5 V power supply)
CND
Power supply (5V/12V) input
2 to 3 5 V DC Input
1 to 3 12 V DC Input
11-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS
(1) Function of switches
Type
No.
Function
of Switch
switch
1
Forced defrost *1
2
Abnormal history clear
3
4
SW1
DIP
Refrigerant address setting
switch
5
6
1
Test run
SW4
2 Test run mode setting
Push
SWP
Pump down
switch
*1 Forced defrost should be done as follows.
1 Change the DIP SW1-1 on the outdoor controller board from OFF to ON.
2 Forced defrost will start by the above operation 1 if all these conditions written below are satisfied.
• Heat mode setting
• 10 minutes have passed since compressor started operating or previous compulsory defrosting finished.
• Pipe temperature is less than or equal to 8°C.
Forced defrost will finish if certain conditions are satisfied.
Forced defrost can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON.
After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again.
This depends on the service conditions.
OCH527C
LED13
Receiving
LED1
Energizing display
)
[ ]
of M-NET board
1, 2 : +
(12 V power supply)
3 : –
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
Operating
Heating
Start
LED11
LED12
Outdoor unit
Transmitting
connecting display
SW12
M-NET address
(10s digit)
The black square ( ) indicates a switch position.
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 ON
1 2 3 4 5 6 1 2 3 4 5 6
9 10
ON ON ON
1 2 3 4 5 6 1 2 3 4 5 6
13 14
OFF
Cooling
Normal
82
SW1
Switch for communication
display between
M-NET and outdoor board
CN5
Serial communication
with outdoor board
SW11
M-NET address (1s digit)
Effective timing
When compressor is working
in heating operation. *1
off or operating
1 2 3 4 5 6
3
1 2 3 4 5 6
7
When power supply ON
1 2 3 4 5 6
11
1 2 3 4 5 6
15
Under suspension
Under suspension
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