Service Manual

70
OCH636B
Switch
Type
of
switch
DIP
switch
Push
switch
SW1
1
2
No.
Function Effective timing
Action by the switch operation
Manual defrost *1 Start Normal
When compressor is operating
in heating operation. *1
Abnormal history clear
Refrigerant address
setting
When power supply ON
Clear Normal Off or operating
SWP
6
5
4
3
Under suspension
Pump down Start Normal
SW4
SW8
1
2
1
2
3
Test run Operating OFF
Under suspension
Test run mode setting Heating Cooling
No function — —
No function
—
—
—
—
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
No function
—
—
—
*1 Manual defrost should be done as follows.
1 Change the DIP SW1-1 on the outdoor controller board from OFF to ON.
2 Manual 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 manual defrost is finished.
· Pipe temperature is less than or equal to 46°F [8°C].
Manual defrost will finish if certain conditions are satisfied.
Manual 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.
10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS
(1) Function of switches
The black square (■) indicates a switch position.
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