10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS
(1) Function of switches
Type
No.
Function
of
Switch
switch
Forced defrost w1
1
2
Abnormal history clear
3
4
SW1
Dip
Refrigerant address
switch
setting
5
6
1
Test run
SW4
2
Test run mode setting
1
No function
SW8
2
No function
Separate indoor/outdoor
3
unit power supplies
Push
SWP
Pump down
switch
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 forced defrost finished.
· Pipe temperature is less than or equal to 8ºC[46ºF].
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.
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
4
5
ON
ON
1 2 3
4 5 6
1 2 3 4 5 6
8
9
ON
ON
1 2 3
4 5 6
1 2 3 4 5 6
12
13
Operating
Heating
—
—
Used
Start
71
OFF
Normal
Normal
ON
ON
1 2 3 4 5 6
1 2 3 4 5 6
2
3
ON
ON
1 2 3 4 5 6
1 2 3 4 5 6
6
7
ON
ON
1 2 3 4 5 6
1 2 3 4 5 6
10
11
ON
ON
1 2 3 4 5 6
1 2 3 4 5 6
14
15
OFF
Cooling
—
—
Not used
Normal
Effective timing
When compressor is working
in heating operation. w1
Off or operating
When power supply ON
Under suspension
—
—
When power supply ON
Under suspension