Function Of Switches, Connectors And Jumpers - Mitsubishi Electric PUHZ-SW40VHA Service Manual

10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS

(1) Function of switches
Type of
Swich No.
Switch
1
2
3
SW1
4
Dip
Refrigerant address setting
switch
5
6
1
SW4
2
Push
SWP
switch
1
2
SW5
3,4,5
6
1
2
3
SW7
*4
4
5 Breaker capacity setting *5
6
1
Dip
SW8 2
switch
3
1
SW9 2
3,4
1
2
3
4
SW6
5
6
7
8
SW5 6
*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:.
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.
*2 'Power failure automatic recovery' can be set by either remote controller or this DIP SW. If one of them is set to ON, 'Auto recovery' acti-
vates. Please set "Auto recovery" basically by remote controller because all units do not have DIP SW.
Please refer to the indoor unit installation manual.
*3 SW7-1 is setting change over of Demand/Low noise. It is effective only in case of external input.
(Local wiring is necessary. Refer to next page: Special function)
*4 Please do not use SW7-3 to SW7-6 usually. Trouble might be caused by the usage condition.
w5 With this switch setting, the capacity decreases up to 30% under peak load condition. Thus this setting is recommended only for Air to
water purposes.
OCH525
Function
Forced defrost *1
Abnormal history clear
Test run
Test run mode setting
Pump down
No function
Power failure
automatic recovery *2
No function
Model select
Mode select *3
No function
Max Hz setting (cooling)
Max Hz setting (heating)
Defrost setting
No function
No function
No function
No function
Function switch
No function
Model select
The black square ( ) indicates a switch position.
Action by the switch operation
ON
Start
Clear
ON ON
1 2 3 4 5 6 1 2 3 4 5 6
0 1
ON
ON
1 2 3 4 5 6 1 2 3 4 5 6
3 4
Operating
Heating
Start
—
Auto recovery
—
Following SW5-6 reference
Demand function
—
Max Hz (cooling) o 0.8
Max Hz (heating) o 0.8
16A
For high humidity
—
—
—
—
Valid
—
MODEL
SW6
ON
40
OFF
1 2 3 4 5 6 7 8
ON
50
OFF
1 2 3 4 5 6 7
■
The black square ( ) indicates a switch position.
42
Effective timing
OFF
When compressor is working
Normal
in heating operation. *1
Normal OFF or operating
ON
1 2 3 4 5 6
2
When power supply ON
ON
1 2 3 4 5 6
5
OFF
Under suspension
Cooling
Normal Under suspension
—
No auto recovery When power supply ON
—
Low noise mode
—
Normal
Normal
25A When power supply ON
Normal
—
—
—
—
Normal
—
SW5-6
ON
OFF
1 2 3 4 5 6
ON
OFF
8 1 2 3 4 5 6
—
—
Always
—
Always
Always
Always
—
—
—
—
Always
—