57
Switch
Type
of
switch
Dip
switch
SW1
1
2
No.
Function
Effective timing
Action by the switch operation
Forced defrost
+
1
Start
Normal
When compressor is working
in heating operation.
+
Abnormal history clear
Refrigerant address setting
When power supply ON
Clear
Normal
off or operating
SW4
1
6
5
4
3
2
Test run
Operating
OFF
Under suspension
Test run mode setting
Heating
Cooling
ON
OFF
1 2 3
0
1
2
3
4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3
4
5
6
7
4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3
8
9
10
11
4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3
12
13
14
15
4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
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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 these conditions written below are satisfied.
• Heat mode setting
• 10 minutes have passed since compressor started operating or previous forced defrost 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.
11-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS
(1) Function of switches
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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” 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.
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3
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))
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4
Please do not use SW7-3~5 usually. Trouble might be caused by the usage condition.
1
2
3,4,5
6
3
4
5
6
1
2
3
1
2
3,4
ON
OFF
No.
Function
Effective timing
Action by the switch operation
No function
Power failure
automatic recovery
+
2
No function
Model select
Max Hz setting (cooling)
Max Hz setting (heating)
No function
Defrost Hz setting
No function
No function
Use of existing wires
No function
Function switch
No function
Pump down
Switch
SW5
SW7
+
4
Dip
switch
SW8
SW9
Push
switch
SWP
Type of
Switch
—
Auto recovery
—
Max Hz(cooling)
%
0.8
Max Hz(heating)
%
0.8
—
For high humidity
—
—
Existing wires
—
Valid
—
Start
—
No auto recovery
—
Refer to next page.
Normal
Normal
—
Normal
—
—
Normal
—
Normal
—
Normal
—
When power supply ON
—
Always
Always
Always
—
Always
—
—
When power supply ON
—
Always
—
Under suspension
Setting of demand
control
+
3
1
2
SW7-1
SW7-2
OFF
0% (Operation stop)
75%
50%
OFF
ON
OFF
OFF
ON
Power consumption
(Demand switch ON)
OCH424E
