Function Of Switches - Mitsubishi Electric PUHZ-SW75VHA Service Manual

10-8. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS

(1) Function of switches

Type of
No.
Switch
Switch
1
Forced defrost *1
2
Abnormal history clear
3
SW1
4
Refrigerant address
Dip
setting
5
switch
6
1
SW4
2
Test run mode setting
Push
SWP
switch
1
2
automatic recovery *2
SW5
3,4,5
6
1
Setting of demand
control
2
*3
SW7
3
*4
4
Breaker size setting
*Only SW75
5
Dip
6
switch
Use of existing pipe
1
2
SW8
3
1
2
SW9
3,4
1
2
3
4
SW6
5
6
7
8
6
SW5
w1 Forced defrost should be done as follows.
1Change the DIP SW1-1 on the outdoor controller board from OFF to ON.
2Forced 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.
w2 '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' activates. Please set "Auto recovery" basically by remote controller because all units do not have DIP SW.
Please refer to the indoor unit installation manual.
w3 SW7-1,2 are used for demand control. SW7-1,2 are effective only at the demand control.
(Refer to next page : Special function (b))
w4 Please do not use SW7-3~6 usually. Trouble might be caused by the usage condition.
OCH533A
Function
ON
1 2 3
ON
1 2 3 4 5 6
Test run
Pump down
No function
Power failure
Auto recovery
No function
model select
No function
4
OFF
OFF
ON
Defrost setting For high humidity
No function
No function
No function
Function switch
No function
MODEL
ON
75VHA
OFF
Model select
ON
100VHA
OFF
The black square ( ) indicates a switch position.
Action by the switch operation
ON
Start
Clear
ON ON
4 5 6 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
—
No auto recovery
—
Following SW5-6 reference
Power consumption
SW7-1 SW7-2
(Demand switch ON)
OFF OFF 0% (Operation stop)
ON OFF
OFF ON
—
SW7 Breaker size
Both for indoor unit
Only for outdoor unit
5
and outdoor unit
25A (Default)
OFF
ON 20A
ON 16A
Used
—
—
—
Valid
—
SW6 SW5-6
ON
OFF
1 2 3 4 5 4 6 7 8 1 2 3 4 5 6
ON
OFF
1 2 3 4 4 5 6 7 8 1 2 3 4 5 6
52
Effective timing
OFF
When compressor is working
Normal
in heating operation. *1
Normal Off or operating
When power supply ON
2
5
OFF
Under suspension
Cooling
Under suspension
Normal
—
When power supply ON
—
50%
75%
—
When power supply ON
20A
16A
—
Normal
Not used
—
—
—
Normal
—
MODEL SW6
ON
120VHA
OFF
1 2 3 4 5 4 6 7 8
ON
100YHA
OFF
1 2 3 4 4 5 6 7 8
ON
120YHA
OFF
1 2 3 4 4 5 6 7 8
—
—
Always
—
Always
Always
—
—
—
Always
—
SW5-6
ON
OFF
1 2 3 4 5 6
ON
OFF
1 2 3 4 5 6
ON
OFF
1 2 3 4 5 6