64
Switch
Type
of
switch
Dip
switch
SW1
1
2
No.
Function
Effective timing
Action by the switch operation
Compulsory defrosting
Start
Normal
When compressor is working
in heating operation.
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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
Compulsory defrosting should be done as follows.
1
Change the DIP SW1-1 on the outdoor controller board from OFF to ON.
2
Compulsory defrosting 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 compulsory defrosting finished.
• Pipe temperature is less than or equal to 8
:
.
3
Compulsory defrosting will finish if certain conditions are satisfied.
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Compulsory defrosting 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.
9-2. Outdoor unit
9-2-1. Function of switches
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1. Do not use only SW5-1 to fix the frequency setting. The compressor operating frequency can be fixed to the desired Hz
by the combination of the SW5-1 setting and optional parts “A Control Service Tool (PAC-SK52ST)” setting.
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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 don’t have DIP
SW. Please refer to mode 01 in the table on page 69.
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3. SW7-1,2 are used to switch the setting of “Low-level Sound Priority Mode”. However, local electrical construction will be
required to make use of this mode. Therefore SW7-1, 2 are effective only when the mode is available for the model.
Refer to 57.
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4. Do not use SW7 normally, or troubles may be caused by the units’ installed condition and used condition.
1
2
3
4
3
4
5
6
1
2
3
ON
OFF
No.
Function
Effective timing
Action by the switch operation
Frequency setting
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1
Power failure
automatic recovery
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2
No function
No function
Change of the Hz upper limit in cooling
Change of the Hz lower limit in heating
Change of the Hz in defrosting
Change of the percentage to limit the Hz
Use of existing pipe
Replacement operation
No function
Pump down
Switch
SW5
SW7
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4
Dip
switch
Push
switch
SW8
SWP
Type of
Switch
Fixed
Auto recovery
—
—
Limited to 85% of the max Hz in cooling
Limited to 85% of the max Hz in heating
Limited to 85% of the max Hz in defrosting
Change of the percentage in case of SW7-3,4 (85%
➔
70%)
Used
Start
—
Start
Normal
No auto recovery
—
—
Normal
Normal
Normal
Normal
Not used
Normal
—
Normal
During operation
(Except 3 minutes after starting.)
When power supply ON
—
—
Always
Always
Always
Always
Always
Always
Under suspension
—
Under suspension
Switch to “Low-level
Sound Priority Mode”
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3
1
2
1
OFF
OFF
Mode 1
Mode 2
Mode 3
OFF
ON
ON
ON
2
Cooling
Regulate max Hz
to spec.
Regulate max Hz
to spec.
Regulate max Hz
to spec.
Regulate max Hz
to spec.
Only TH7
}
30
°
C
regulate max Hz
to spec.
No regulation
Heating
Low-level Sound
Priority Mode
OCT04A-3.qxp 04.9.29 9:16 AM Page 64
